On Mon, Feb 18, 2019 at 7:07 PM John Reiser <jrei...@bitwagon.com> wrote:
> On 2/17/19, Peng Yu wrote: > > $ flex -o main.l.c main.l > > $ clang -I. -DGC_DEBUG -Wall -pedantic -g -c -o main.l.o main.l.c # > > rapidstring.h is in . > > $ clang main.l.o -lgc -lfl -o main.l.exe > > $ dsymutil main.l.exe > > What is 'dsymutil', where did you get it, what version? > What is the hardware architecture? That is just the command on Mac to generate the debug symbols. > > > The execution recipe works for me on Fedora 28 using > valgrind-3.14.0-7.fc28.x86_64. > I omitted dsymutil. Why is it essential for you? It is not essential. > > > $ ldd main.l.exe > linux-vdso.so.1 (0x00007fffa7d9f000) > libgc.so.1 => /lib64/libgc.so.1 (0x00007f255ef81000) > libc.so.6 => /lib64/libc.so.6 (0x00007f255ebc2000) > libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f255e9a3000) > libdl.so.2 => /lib64/libdl.so.2 (0x00007f255e79f000) > libatomic_ops.so.1 => /lib64/libatomic_ops.so.1 > (0x00007f255e59c000) > libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f255e384000) > /lib64/ld-linux-x86-64.so.2 (0x00007f255f2de000) > > $ rpm -qf /lib64/libgc.so.1 > gc-7.6.4-3.fc28.x86_64 > $ rpm -qf /usr/bin/flex > flex-2.6.1-7.fc28.x86_64 > $ rpm -q clang > clang-6.0.1-2.fc28.x86_64 Why there is no segmentation fault in your run? > > > $ valgrind ./main.l.exe <input.txt > ==23299== Memcheck, a memory error detector > ==23299== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. > ==23299== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright > info > ==23299== Command: ./main.l.exe > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4D166: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4D16B: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E4CF57: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4CF66: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E4CF9A: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E491AA: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E491B9: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E491E7: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E44733: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E49D21: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4E786: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4D166: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4D16B: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E4CF57: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E4CF66: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E4CF9A: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E491AA: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Conditional jump or move depends on uninitialised value(s) > ==23299== at 0x4E491B9: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E491E7: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E446F6: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > ==23299== Use of uninitialised value of size 8 > ==23299== at 0x4E44733: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D171: GC_push_all_eager (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E57F2C: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E4D896: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E42C44: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E43348: ??? (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x4E5043B: GC_init (in /usr/lib64/libgc.so.1.3.2) > ==23299== by 0x403203: main (main.l:34) > ==23299== > tok = 1000, yylval= 1 > tok = 1001, yylval= a > tok = 1000, yylval= 23 > tok = 1001, yylval= b > tok = 1000, yylval= 456 > tok = 1001, yylval= c > ==23299== > ==23299== HEAP SUMMARY: > ==23299== in use at exit: 864 bytes in 3 blocks > ==23299== total heap usage: 14 allocs, 11 frees, 24,562 bytes allocated > ==23299== > ==23299== LEAK SUMMARY: > ==23299== definitely lost: 0 bytes in 0 blocks > ==23299== indirectly lost: 0 bytes in 0 blocks > ==23299== possibly lost: 864 bytes in 3 blocks > ==23299== still reachable: 0 bytes in 0 blocks > ==23299== suppressed: 0 bytes in 0 blocks > ==23299== Rerun with --leak-check=full to see details of leaked memory > ==23299== > ==23299== For counts of detected and suppressed errors, rerun with: -v > ==23299== Use --track-origins=yes to see where uninitialised values come > from > ==23299== ERROR SUMMARY: 390 errors from 18 contexts (suppressed: 0 from 0) > $ > > > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users > -- Regards, Peng
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