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Solve memory problems verified by valgrind

I have a problem with valgrind; I don’t know why, when I test my program developed in C with valgrind, it cannot display function names (it displays “???”), where it detects problems, but these problems are not for all errors that it detects

==9803== ERROR SUMMARY: 24 errors from 6 contexts (suppressed: 0 from 0)
==9803== 
==9803== 1 errors in context 1 of 6:
==9803== Conditional jump or move depends on uninitialised value(s)
==9803==    at 0x40F7EC6: ???
==9803== 
==9803== 1 errors in context 2 of 6:
==9803== Conditional jump or move depends on uninitialised value(s)
==9803==    at 0x40F86F8: ???
==9803== 
==9803== 1 errors in context 3 of 6:
==9803== Conditional jump or move depends on uninitialised value(s)
==9803==    at 0x40F8166: ???
==9803== 
==9803== 1 errors in context 4 of 6:
==9803== Conditional jump or move depends on uninitialised value(s)
==9803==    at 0x40F805E: ???
==9803==

Do you have a solution for displaying function names using valgrind?

Thanks in advance

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1 answer

Presumably, these errors occur in libraries for which you do not have debugging symbols. This is easy to verify: just look at / proc / pidof my-binary/ maps while the application is running.

08048000-08052000 r-xp 00000000 fe:00 42546         /bin/cat
08052000-08053000 rw-p 0000a000 fe:00 42546         /bin/cat
097fb000-0981c000 rw-p 00000000 00:00 0             [heap]
f73bc000-f75ac000 r--p 00000000 fe:02 281727        /usr/lib/locale/locale-archive
f75ac000-f75ad000 rw-p 00000000 00:00 0 
f75ad000-f76ed000 r-xp 00000000 fe:00 18416         /lib/i686/cmov/libc-2.11.2.so
f76ed000-f76ef000 r--p 0013f000 fe:00 18416         /lib/i686/cmov/libc-2.11.2.so
f76ef000-f76f0000 rw-p 00141000 fe:00 18416         /lib/i686/cmov/libc-2.11.2.so
f76f0000-f76f3000 rw-p 00000000 00:00 0 
f7705000-f7707000 rw-p 00000000 00:00 0 
f7707000-f7708000 r-xp 00000000 00:00 0             [vdso]
f7708000-f7723000 r-xp 00000000 fe:00 19087         /lib/ld-2.11.2.so
f7723000-f7724000 r--p 0001a000 fe:00 19087         /lib/ld-2.11.2.so
f7724000-f7725000 rw-p 0001b000 fe:00 19087         /lib/ld-2.11.2.so
ffb6e000-ffb83000 rw-p 00000000 00:00 0

( r-xp) . , , , , , .

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