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cgo
[ DIR ]
drwxr-xr-x
debug
[ DIR ]
drwxr-xr-x
internal
[ DIR ]
drwxr-xr-x
msan
[ DIR ]
drwxr-xr-x
pprof
[ DIR ]
drwxr-xr-x
race
[ DIR ]
drwxr-xr-x
testdata
[ DIR ]
drwxr-xr-x
trace
[ DIR ]
drwxr-xr-x
HACKING.md
13.07
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Makefile
178
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alg.go
10.18
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asm.s
1.16
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asm_386.s
40.2
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asm_amd64.s
45.78
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asm_arm.s
30.89
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asm_arm64.s
33.12
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asm_mips64x.s
22.45
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asm_mipsx.s
24.72
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asm_ppc64x.h
1023
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asm_ppc64x.s
29.39
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asm_riscv64.s
17.38
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asm_s390x.s
26.35
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asm_wasm.s
9.65
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atomic_arm64.s
259
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atomic_mips64x.s
296
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atomic_mipsx.s
258
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atomic_pointer.go
2.62
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atomic_ppc64x.s
433
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atomic_riscv64.s
307
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auxv_none.go
358
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callers_test.go
7.7
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cgo.go
2.01
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cgo_mmap.go
2.38
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cgo_ppc64x.go
411
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cgo_sigaction.go
3.09
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cgocall.go
21.38
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cgocallback.go
317
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cgocheck.go
6.8
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chan.go
19.71
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chan_test.go
21.27
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chanbarrier_test.go
1.4
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checkptr.go
2.5
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checkptr_test.go
1.27
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closure_test.go
936
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compiler.go
413
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complex.go
1.59
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complex_test.go
1.05
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cpuflags.go
740
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cpuflags_amd64.go
533
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cpuprof.go
6.65
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cputicks.go
478
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crash_cgo_test.go
13.71
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crash_nonunix_test.go
385
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crash_test.go
20.24
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crash_unix_test.go
8.89
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debug.go
1.63
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debug_test.go
6.16
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debugcall.go
2.83
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debuglog.go
17.08
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debuglog_off.go
356
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debuglog_on.go
1.09
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debuglog_test.go
4.56
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defer_test.go
9.98
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defs1_linux.go
844
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defs1_netbsd_386.go
2.84
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defs1_netbsd_amd64.go
3.07
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defs1_netbsd_arm.go
2.96
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defs1_netbsd_arm64.go
3.18
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defs1_solaris_amd64.go
4.02
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defs2_linux.go
3.51
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defs3_linux.go
1.09
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defs_aix.go
4.16
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defs_aix_ppc64.go
3.61
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defs_arm_linux.go
2.67
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defs_darwin.go
3.84
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defs_darwin_386.go
5.98
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defs_darwin_amd64.go
6.07
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defs_darwin_arm.go
3.78
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defs_darwin_arm64.go
3.84
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defs_dragonfly.go
2.54
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defs_dragonfly_amd64.go
3.25
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defs_freebsd.go
3.84
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defs_freebsd_386.go
4.35
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defs_freebsd_amd64.go
4.62
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defs_freebsd_arm.go
3.68
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defs_freebsd_arm64.go
4
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defs_illumos_amd64.go
285
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defs_linux.go
3.04
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defs_linux_386.go
4.05
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defs_linux_amd64.go
4.56
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defs_linux_arm.go
3.31
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defs_linux_arm64.go
3.23
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defs_linux_mips64x.go
3.04
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defs_linux_mipsx.go
3.18
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defs_linux_ppc64.go
3.28
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defs_linux_ppc64le.go
3.28
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defs_linux_riscv64.go
3.27
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defs_linux_s390x.go
2.76
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defs_netbsd.go
2.74
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defs_netbsd_386.go
854
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defs_netbsd_amd64.go
1.01
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defs_netbsd_arm.go
763
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defs_openbsd.go
2.6
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defs_openbsd_386.go
2.63
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defs_openbsd_amd64.go
2.83
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defs_openbsd_arm.go
2.74
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defs_openbsd_arm64.go
2.34
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defs_plan9_386.go
1.47
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defs_plan9_amd64.go
1.66
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defs_plan9_arm.go
1.73
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defs_solaris.go
3.33
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defs_solaris_amd64.go
1003
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defs_windows.go
2.07
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defs_windows_386.go
3.75
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defs_windows_amd64.go
4.51
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defs_windows_arm.go
3.59
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duff_386.s
8.24
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duff_amd64.s
5.53
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duff_arm.s
7.11
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duff_arm64.s
5.25
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duff_mips64x.s
11.28
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duff_ppc64x.s
2.45
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duff_s390x.s
507
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env_plan9.go
855
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env_posix.go
1.82
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env_test.go
1.28
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error.go
7.26
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example_test.go
1.34
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export_aix_test.go
204
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export_arm_test.go
226
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export_darwin_test.go
351
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export_debug_test.go
5.28
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export_debuglog_test.go
1.27
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export_futex_test.go
529
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export_linux_test.go
429
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export_mmap_test.go
481
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export_solaris_test.go
282
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export_test.go
23.58
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export_unix_test.go
2.28
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export_windows_test.go
652
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extern.go
11.6
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fastlog2.go
1.22
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fastlog2_test.go
784
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fastlog2table.go
904
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float.go
1.35
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funcdata.h
2.44
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futex_test.go
2.1
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gc_test.go
13.22
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gcinfo_test.go
6.18
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go_tls.h
366
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hash32.go
2.51
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hash64.go
2.6
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hash_test.go
17.54
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heapdump.go
17.1
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iface.go
15.78
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iface_test.go
6.81
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lfstack.go
1.77
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lfstack_32bit.go
522
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lfstack_64bit.go
2.15
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lfstack_test.go
2.78
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libfuzzer.go
2.58
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libfuzzer_amd64.s
940
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libfuzzer_arm64.s
751
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lock_futex.go
5.06
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lock_js.go
5.45
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lock_sema.go
6.6
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malloc.go
48.32
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malloc_test.go
9.37
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map.go
42.13
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map_benchmark_test.go
10.16
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map_fast32.go
12.18
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map_fast64.go
12.37
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map_faststr.go
13.82
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map_test.go
27.11
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mbarrier.go
12.14
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mbitmap.go
67.53
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mcache.go
5.61
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mcentral.go
7.14
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mem_aix.go
1.93
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mem_bsd.go
2.05
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mem_darwin.go
1.88
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mem_js.go
2.32
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mem_linux.go
5.58
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mem_plan9.go
4.53
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mem_windows.go
3.86
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memclr_386.s
2.4
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memclr_amd64.s
3.65
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memclr_arm.s
2.44
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memclr_arm64.s
3.48
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memclr_mips64x.s
785
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memclr_mipsx.s
1.24
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memclr_plan9_386.s
905
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memclr_plan9_amd64.s
433
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memclr_ppc64x.s
4.2
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memclr_riscv64.s
848
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memclr_s390x.s
1.89
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memclr_wasm.s
544
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memmove_386.s
4.45
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memmove_amd64.s
12.33
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memmove_arm.s
5.9
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memmove_arm64.s
3.56
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memmove_linux_amd64_test.go
1.61
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memmove_mips64x.s
1.82
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memmove_mipsx.s
4.39
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memmove_plan9_386.s
3.06
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memmove_plan9_amd64.s
3.04
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memmove_ppc64x.s
3.33
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memmove_riscv64.s
1.81
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memmove_s390x.s
2.92
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memmove_test.go
10.97
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memmove_wasm.s
1.74
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mfinal.go
14.8
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mfinal_test.go
5.85
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mfixalloc.go
2.72
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mgc.go
74.87
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mgcmark.go
46.5
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mgcscavenge.go
30.95
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mgcscavenge_test.go
12.34
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mgcstack.go
10.55
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mgcsweep.go
14.79
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mgcsweepbuf.go
5.98
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mgcwork.go
14.24
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mheap.go
61.5
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mkduff.go
6.23
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mkfastlog2table.go
1.32
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mkpreempt.go
13.33
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mksizeclasses.go
8.62
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mmap.go
847
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mpagealloc.go
35.25
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mpagealloc_32bit.go
3.75
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mpagealloc_64bit.go
6.51
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mpagealloc_test.go
28.88
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mpagecache.go
5.03
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mpagecache_test.go
9.93
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mpallocbits.go
10.69
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mpallocbits_test.go
12.93
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mprof.go
24.06
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mranges.go
5.41
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msan.go
1.39
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msan0.go
647
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msan_amd64.s
2.03
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msan_arm64.s
1.69
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msize.go
785
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mstats.go
22.62
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mwbbuf.go
10.07
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nbpipe_fcntl_libc_test.go
463
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nbpipe_fcntl_unix_test.go
445
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nbpipe_pipe.go
411
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nbpipe_pipe2.go
509
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nbpipe_test.go
2.17
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net_plan9.go
645
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netpoll.go
14.46
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netpoll_aix.go
4.64
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netpoll_epoll.go
4
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netpoll_fake.go
648
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netpoll_kqueue.go
4.39
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netpoll_solaris.go
10.56
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netpoll_stub.go
1.3
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netpoll_windows.go
4.51
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norace_linux_test.go
888
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norace_test.go
979
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numcpu_freebsd_test.go
381
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os2_aix.go
20.67
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os2_freebsd.go
302
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os2_openbsd.go
296
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os2_plan9.go
1.48
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os2_solaris.go
320
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os3_plan9.go
3.99
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os3_solaris.go
16.92
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os_aix.go
8.29
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os_android.go
463
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os_darwin.go
10.59
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os_darwin_arm.go
749
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os_darwin_arm64.go
416
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os_dragonfly.go
6.2
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os_freebsd.go
10.97
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os_freebsd2.go
478
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os_freebsd_amd64.go
529
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os_freebsd_arm.go
1.32
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os_freebsd_arm64.go
2.97
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os_freebsd_noauxv.go
254
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os_illumos.go
3.93
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os_js.go
2.93
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os_linux.go
13.16
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os_linux_arm.go
1.35
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os_linux_arm64.go
1.02
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os_linux_be64.go
816
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os_linux_generic.go
916
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os_linux_mips64x.go
999
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os_linux_mipsx.go
1.05
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os_linux_noauxv.go
307
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os_linux_novdso.go
298
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os_linux_ppc64x.go
527
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os_linux_riscv64.go
198
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os_linux_s390x.go
455
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os_linux_x86.go
2.69
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os_netbsd.go
8.49
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os_netbsd_386.go
588
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os_netbsd_amd64.go
585
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os_netbsd_arm.go
1.13
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os_netbsd_arm64.go
827
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os_nonopenbsd.go
436
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os_only_solaris.go
356
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os_openbsd.go
7.81
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os_openbsd_arm.go
749
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os_openbsd_arm64.go
714
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os_plan9.go
9.3
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os_plan9_arm.go
462
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os_solaris.go
6.49
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os_windows.go
37.01
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os_windows_arm.go
511
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panic.go
42.23
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panic32.go
4.79
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plugin.go
4.16
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textflag.h
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zcallback_windows.s
63.02
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zcallback_windows_arm.s
89.32
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Code Editor : runtime-gdb_test.go
// Copyright 2015 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package runtime_test import ( "bytes" "fmt" "internal/testenv" "io/ioutil" "os" "os/exec" "path/filepath" "regexp" "runtime" "strconv" "strings" "testing" ) func checkGdbEnvironment(t *testing.T) { testenv.MustHaveGoBuild(t) switch runtime.GOOS { case "darwin": t.Skip("gdb does not work on darwin") case "netbsd": t.Skip("gdb does not work with threads on NetBSD; see https://golang.org/issue/22893 and https://gnats.netbsd.org/52548") case "windows": t.Skip("gdb tests fail on Windows: https://golang.org/issue/22687") case "linux": if runtime.GOARCH == "ppc64" { t.Skip("skipping gdb tests on linux/ppc64; see https://golang.org/issue/17366") } if runtime.GOARCH == "mips" { t.Skip("skipping gdb tests on linux/mips; see https://golang.org/issue/25939") } case "freebsd": t.Skip("skipping gdb tests on FreeBSD; see https://golang.org/issue/29508") case "aix": if testing.Short() { t.Skip("skipping gdb tests on AIX; see https://golang.org/issue/35710") } } if final := os.Getenv("GOROOT_FINAL"); final != "" && runtime.GOROOT() != final { t.Skip("gdb test can fail with GOROOT_FINAL pending") } } func checkGdbVersion(t *testing.T) { // Issue 11214 reports various failures with older versions of gdb. out, err := exec.Command("gdb", "--version").CombinedOutput() if err != nil { t.Skipf("skipping: error executing gdb: %v", err) } re := regexp.MustCompile(`([0-9]+)\.([0-9]+)`) matches := re.FindSubmatch(out) if len(matches) < 3 { t.Skipf("skipping: can't determine gdb version from\n%s\n", out) } major, err1 := strconv.Atoi(string(matches[1])) minor, err2 := strconv.Atoi(string(matches[2])) if err1 != nil || err2 != nil { t.Skipf("skipping: can't determine gdb version: %v, %v", err1, err2) } if major < 7 || (major == 7 && minor < 7) { t.Skipf("skipping: gdb version %d.%d too old", major, minor) } t.Logf("gdb version %d.%d", major, minor) } func checkGdbPython(t *testing.T) { if runtime.GOOS == "solaris" || runtime.GOOS == "illumos" { t.Skip("skipping gdb python tests on illumos and solaris; see golang.org/issue/20821") } cmd := exec.Command("gdb", "-nx", "-q", "--batch", "-iex", "python import sys; print('go gdb python support')") out, err := cmd.CombinedOutput() if err != nil { t.Skipf("skipping due to issue running gdb: %v", err) } if strings.TrimSpace(string(out)) != "go gdb python support" { t.Skipf("skipping due to lack of python gdb support: %s", out) } } // checkCleanBacktrace checks that the given backtrace is well formed and does // not contain any error messages from GDB. func checkCleanBacktrace(t *testing.T, backtrace string) { backtrace = strings.TrimSpace(backtrace) lines := strings.Split(backtrace, "\n") if len(lines) == 0 { t.Fatalf("empty backtrace") } for i, l := range lines { if !strings.HasPrefix(l, fmt.Sprintf("#%v ", i)) { t.Fatalf("malformed backtrace at line %v: %v", i, l) } } // TODO(mundaym): check for unknown frames (e.g. "??"). } const helloSource = ` import "fmt" import "runtime" var gslice []string func main() { mapvar := make(map[string]string, 13) mapvar["abc"] = "def" mapvar["ghi"] = "jkl" strvar := "abc" ptrvar := &strvar slicevar := make([]string, 0, 16) slicevar = append(slicevar, mapvar["abc"]) fmt.Println("hi") runtime.KeepAlive(ptrvar) _ = ptrvar gslice = slicevar runtime.KeepAlive(mapvar) } // END_OF_PROGRAM ` func lastLine(src []byte) int { eop := []byte("END_OF_PROGRAM") for i, l := range bytes.Split(src, []byte("\n")) { if bytes.Contains(l, eop) { return i } } return 0 } func TestGdbPython(t *testing.T) { testGdbPython(t, false) } func TestGdbPythonCgo(t *testing.T) { if runtime.GOARCH == "mips" || runtime.GOARCH == "mipsle" || runtime.GOARCH == "mips64" { testenv.SkipFlaky(t, 18784) } testGdbPython(t, true) } func testGdbPython(t *testing.T, cgo bool) { if cgo { testenv.MustHaveCGO(t) } checkGdbEnvironment(t) t.Parallel() checkGdbVersion(t) checkGdbPython(t) dir, err := ioutil.TempDir("", "go-build") if err != nil { t.Fatalf("failed to create temp directory: %v", err) } defer os.RemoveAll(dir) var buf bytes.Buffer buf.WriteString("package main\n") if cgo { buf.WriteString(`import "C"` + "\n") } buf.WriteString(helloSource) src := buf.Bytes() err = ioutil.WriteFile(filepath.Join(dir, "main.go"), src, 0644) if err != nil { t.Fatalf("failed to create file: %v", err) } nLines := lastLine(src) cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go") cmd.Dir = dir out, err := testenv.CleanCmdEnv(cmd).CombinedOutput() if err != nil { t.Fatalf("building source %v\n%s", err, out) } args := []string{"-nx", "-q", "--batch", "-iex", "add-auto-load-safe-path " + filepath.Join(runtime.GOROOT(), "src", "runtime"), "-ex", "set startup-with-shell off", "-ex", "set print thread-events off", } if cgo { // When we build the cgo version of the program, the system's // linker is used. Some external linkers, like GNU gold, // compress the .debug_gdb_scripts into .zdebug_gdb_scripts. // Until gold and gdb can work together, temporarily load the // python script directly. args = append(args, "-ex", "source "+filepath.Join(runtime.GOROOT(), "src", "runtime", "runtime-gdb.py"), ) } else { args = append(args, "-ex", "info auto-load python-scripts", ) } args = append(args, "-ex", "set python print-stack full", "-ex", "br main.go:15", "-ex", "run", "-ex", "echo BEGIN info goroutines\n", "-ex", "info goroutines", "-ex", "echo END\n", "-ex", "echo BEGIN print mapvar\n", "-ex", "print mapvar", "-ex", "echo END\n", "-ex", "echo BEGIN print strvar\n", "-ex", "print strvar", "-ex", "echo END\n", "-ex", "echo BEGIN info locals\n", "-ex", "info locals", "-ex", "echo END\n", "-ex", "echo BEGIN goroutine 1 bt\n", "-ex", "goroutine 1 bt", "-ex", "echo END\n", "-ex", "echo BEGIN goroutine 2 bt\n", "-ex", "goroutine 2 bt", "-ex", "echo END\n", "-ex", "echo BEGIN goroutine all bt\n", "-ex", "goroutine all bt", "-ex", "echo END\n", "-ex", "clear main.go:15", // clear the previous break point "-ex", fmt.Sprintf("br main.go:%d", nLines), // new break point at the end of main "-ex", "c", "-ex", "echo BEGIN goroutine 1 bt at the end\n", "-ex", "goroutine 1 bt", "-ex", "echo END\n", filepath.Join(dir, "a.exe"), ) got, _ := exec.Command("gdb", args...).CombinedOutput() t.Logf("gdb output: %s\n", got) firstLine := bytes.SplitN(got, []byte("\n"), 2)[0] if string(firstLine) != "Loading Go Runtime support." { // This can happen when using all.bash with // GOROOT_FINAL set, because the tests are run before // the final installation of the files. cmd := exec.Command(testenv.GoToolPath(t), "env", "GOROOT") cmd.Env = []string{} out, err := cmd.CombinedOutput() if err != nil && bytes.Contains(out, []byte("cannot find GOROOT")) { t.Skipf("skipping because GOROOT=%s does not exist", runtime.GOROOT()) } _, file, _, _ := runtime.Caller(1) t.Logf("package testing source file: %s", file) t.Fatalf("failed to load Go runtime support: %s\n%s", firstLine, got) } // Extract named BEGIN...END blocks from output partRe := regexp.MustCompile(`(?ms)^BEGIN ([^\n]*)\n(.*?)\nEND`) blocks := map[string]string{} for _, subs := range partRe.FindAllSubmatch(got, -1) { blocks[string(subs[1])] = string(subs[2]) } infoGoroutinesRe := regexp.MustCompile(`\*\s+\d+\s+running\s+`) if bl := blocks["info goroutines"]; !infoGoroutinesRe.MatchString(bl) { t.Fatalf("info goroutines failed: %s", bl) } printMapvarRe1 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def", \[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl"}$`) printMapvarRe2 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl", \[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def"}$`) if bl := blocks["print mapvar"]; !printMapvarRe1.MatchString(bl) && !printMapvarRe2.MatchString(bl) { t.Fatalf("print mapvar failed: %s", bl) } strVarRe := regexp.MustCompile(`^\$[0-9]+ = (0x[0-9a-f]+\s+)?"abc"$`) if bl := blocks["print strvar"]; !strVarRe.MatchString(bl) { t.Fatalf("print strvar failed: %s", bl) } // The exact format of composite values has changed over time. // For issue 16338: ssa decompose phase split a slice into // a collection of scalar vars holding its fields. In such cases // the DWARF variable location expression should be of the // form "var.field" and not just "field". // However, the newer dwarf location list code reconstituted // aggregates from their fields and reverted their printing // back to its original form. // Only test that all variables are listed in 'info locals' since // different versions of gdb print variables in different // order and with differing amount of information and formats. if bl := blocks["info locals"]; !strings.Contains(bl, "slicevar") || !strings.Contains(bl, "mapvar") || !strings.Contains(bl, "strvar") { t.Fatalf("info locals failed: %s", bl) } // Check that the backtraces are well formed. checkCleanBacktrace(t, blocks["goroutine 1 bt"]) checkCleanBacktrace(t, blocks["goroutine 2 bt"]) checkCleanBacktrace(t, blocks["goroutine 1 bt at the end"]) btGoroutine1Re := regexp.MustCompile(`(?m)^#0\s+(0x[0-9a-f]+\s+in\s+)?main\.main.+at`) if bl := blocks["goroutine 1 bt"]; !btGoroutine1Re.MatchString(bl) { t.Fatalf("goroutine 1 bt failed: %s", bl) } btGoroutine2Re := regexp.MustCompile(`(?m)^#0\s+(0x[0-9a-f]+\s+in\s+)?runtime.+at`) if bl := blocks["goroutine 2 bt"]; !btGoroutine2Re.MatchString(bl) { t.Fatalf("goroutine 2 bt failed: %s", bl) } if bl := blocks["goroutine all bt"]; !btGoroutine1Re.MatchString(bl) || !btGoroutine2Re.MatchString(bl) { t.Fatalf("goroutine all bt failed: %s", bl) } btGoroutine1AtTheEndRe := regexp.MustCompile(`(?m)^#0\s+(0x[0-9a-f]+\s+in\s+)?main\.main.+at`) if bl := blocks["goroutine 1 bt at the end"]; !btGoroutine1AtTheEndRe.MatchString(bl) { t.Fatalf("goroutine 1 bt at the end failed: %s", bl) } } const backtraceSource = ` package main //go:noinline func aaa() bool { return bbb() } //go:noinline func bbb() bool { return ccc() } //go:noinline func ccc() bool { return ddd() } //go:noinline func ddd() bool { return f() } //go:noinline func eee() bool { return true } var f = eee func main() { _ = aaa() } ` // TestGdbBacktrace tests that gdb can unwind the stack correctly // using only the DWARF debug info. func TestGdbBacktrace(t *testing.T) { if runtime.GOOS == "netbsd" { testenv.SkipFlaky(t, 15603) } checkGdbEnvironment(t) t.Parallel() checkGdbVersion(t) dir, err := ioutil.TempDir("", "go-build") if err != nil { t.Fatalf("failed to create temp directory: %v", err) } defer os.RemoveAll(dir) // Build the source code. src := filepath.Join(dir, "main.go") err = ioutil.WriteFile(src, []byte(backtraceSource), 0644) if err != nil { t.Fatalf("failed to create file: %v", err) } cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go") cmd.Dir = dir out, err := testenv.CleanCmdEnv(cmd).CombinedOutput() if err != nil { t.Fatalf("building source %v\n%s", err, out) } // Execute gdb commands. args := []string{"-nx", "-batch", "-iex", "add-auto-load-safe-path " + filepath.Join(runtime.GOROOT(), "src", "runtime"), "-ex", "set startup-with-shell off", "-ex", "break main.eee", "-ex", "run", "-ex", "backtrace", "-ex", "continue", filepath.Join(dir, "a.exe"), } got, _ := exec.Command("gdb", args...).CombinedOutput() // Check that the backtrace matches the source code. bt := []string{ "eee", "ddd", "ccc", "bbb", "aaa", "main", } for i, name := range bt { s := fmt.Sprintf("#%v.*main\\.%v", i, name) re := regexp.MustCompile(s) if found := re.Find(got) != nil; !found { t.Errorf("could not find '%v' in backtrace", s) t.Fatalf("gdb output:\n%v", string(got)) } } } const autotmpTypeSource = ` package main type astruct struct { a, b int } func main() { var iface interface{} = map[string]astruct{} var iface2 interface{} = []astruct{} println(iface, iface2) } ` // TestGdbAutotmpTypes ensures that types of autotmp variables appear in .debug_info // See bug #17830. func TestGdbAutotmpTypes(t *testing.T) { checkGdbEnvironment(t) t.Parallel() checkGdbVersion(t) if runtime.GOOS == "aix" && testing.Short() { t.Skip("TestGdbAutotmpTypes is too slow on aix/ppc64") } dir, err := ioutil.TempDir("", "go-build") if err != nil { t.Fatalf("failed to create temp directory: %v", err) } defer os.RemoveAll(dir) // Build the source code. src := filepath.Join(dir, "main.go") err = ioutil.WriteFile(src, []byte(autotmpTypeSource), 0644) if err != nil { t.Fatalf("failed to create file: %v", err) } cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags=all=-N -l", "-o", "a.exe", "main.go") cmd.Dir = dir out, err := testenv.CleanCmdEnv(cmd).CombinedOutput() if err != nil { t.Fatalf("building source %v\n%s", err, out) } // Execute gdb commands. args := []string{"-nx", "-batch", "-iex", "add-auto-load-safe-path " + filepath.Join(runtime.GOROOT(), "src", "runtime"), "-ex", "set startup-with-shell off", "-ex", "break main.main", "-ex", "run", "-ex", "step", "-ex", "info types astruct", filepath.Join(dir, "a.exe"), } got, _ := exec.Command("gdb", args...).CombinedOutput() sgot := string(got) // Check that the backtrace matches the source code. types := []string{ "[]main.astruct;", "bucket<string,main.astruct>;", "hash<string,main.astruct>;", "main.astruct;", "hash<string,main.astruct> * map[string]main.astruct;", } for _, name := range types { if !strings.Contains(sgot, name) { t.Errorf("could not find %s in 'info typrs astruct' output", name) t.Fatalf("gdb output:\n%v", sgot) } } } const constsSource = ` package main const aConstant int = 42 const largeConstant uint64 = ^uint64(0) const minusOne int64 = -1 func main() { println("hello world") } ` func TestGdbConst(t *testing.T) { checkGdbEnvironment(t) t.Parallel() checkGdbVersion(t) dir, err := ioutil.TempDir("", "go-build") if err != nil { t.Fatalf("failed to create temp directory: %v", err) } defer os.RemoveAll(dir) // Build the source code. src := filepath.Join(dir, "main.go") err = ioutil.WriteFile(src, []byte(constsSource), 0644) if err != nil { t.Fatalf("failed to create file: %v", err) } cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags=all=-N -l", "-o", "a.exe", "main.go") cmd.Dir = dir out, err := testenv.CleanCmdEnv(cmd).CombinedOutput() if err != nil { t.Fatalf("building source %v\n%s", err, out) } // Execute gdb commands. args := []string{"-nx", "-batch", "-iex", "add-auto-load-safe-path " + filepath.Join(runtime.GOROOT(), "src", "runtime"), "-ex", "set startup-with-shell off", "-ex", "break main.main", "-ex", "run", "-ex", "print main.aConstant", "-ex", "print main.largeConstant", "-ex", "print main.minusOne", "-ex", "print 'runtime.mSpanInUse'", "-ex", "print 'runtime._PageSize'", filepath.Join(dir, "a.exe"), } got, _ := exec.Command("gdb", args...).CombinedOutput() sgot := strings.ReplaceAll(string(got), "\r\n", "\n") t.Logf("output %q", sgot) if !strings.Contains(sgot, "\n$1 = 42\n$2 = 18446744073709551615\n$3 = -1\n$4 = 1 '\\001'\n$5 = 8192") { t.Fatalf("output mismatch") } } const panicSource = ` package main import "runtime/debug" func main() { debug.SetTraceback("crash") crash() } func crash() { panic("panic!") } ` // TestGdbPanic tests that gdb can unwind the stack correctly // from SIGABRTs from Go panics. func TestGdbPanic(t *testing.T) { checkGdbEnvironment(t) t.Parallel() checkGdbVersion(t) dir, err := ioutil.TempDir("", "go-build") if err != nil { t.Fatalf("failed to create temp directory: %v", err) } defer os.RemoveAll(dir) // Build the source code. src := filepath.Join(dir, "main.go") err = ioutil.WriteFile(src, []byte(panicSource), 0644) if err != nil { t.Fatalf("failed to create file: %v", err) } cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go") cmd.Dir = dir out, err := testenv.CleanCmdEnv(cmd).CombinedOutput() if err != nil { t.Fatalf("building source %v\n%s", err, out) } // Execute gdb commands. args := []string{"-nx", "-batch", "-iex", "add-auto-load-safe-path " + filepath.Join(runtime.GOROOT(), "src", "runtime"), "-ex", "set startup-with-shell off", "-ex", "run", "-ex", "backtrace", filepath.Join(dir, "a.exe"), } got, _ := exec.Command("gdb", args...).CombinedOutput() // Check that the backtrace matches the source code. bt := []string{ `crash`, `main`, } for _, name := range bt { s := fmt.Sprintf("(#.* .* in )?main\\.%v", name) re := regexp.MustCompile(s) if found := re.Find(got) != nil; !found { t.Errorf("could not find '%v' in backtrace", s) t.Fatalf("gdb output:\n%v", string(got)) } } }
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