** Description changed:
I'm using Ubuntu 12.10 dev with gcc 4:4.7.0-5ubuntu1 and valgrind
1:3.7.0-0ubuntu3. Here is the code example:
#include <stdarg.h>
#include <stdio.h>
void test(char *var1, char *var2, char *var3, char *var4, char *var5, char
*var6, int argc, ...)
{
va_list list;
va_start(list, argc);
if(va_arg(list, long int) == 1)
printf("Test\n");
va_end(list);
}
int main()
{
test(NULL, NULL, NULL, NULL, NULL, NULL, 1, 1);
return 0;
}
-
- I have compiled it with "gcc -O3 -Wall -Wextra -o test -pedantic test.c" and
tested with "valgrind ./test". The output is:
+ I have compiled it with "gcc -O3 -Wall -Wextra -o test -pedantic test.c"
+ and tested with "valgrind ./test". The output is:
==11060== Memcheck, a memory error detector
==11060== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==11060== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==11060== Command: ./test
==11060==
==11060== Conditional jump or move depends on uninitialised value(s)
==11060== at 0x400575: test (in /home/sworddragon/data/test)
==11060== by 0x400437: main (in /home/sworddragon/data/test)
==11060==
Test
==11060==
==11060== HEAP SUMMARY:
==11060== in use at exit: 0 bytes in 0 blocks
==11060== total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==11060==
==11060== All heap blocks were freed -- no leaks are possible
==11060==
==11060== For counts of detected and suppressed errors, rerun with: -v
==11060== Use --track-origins=yes to see where uninitialised values come from
==11060== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 2 from 2)
-
- Interestingly with 5 instead of 6 char * arguments before I'm getting the
same error but without the output "Test". WIth less than 5 char * arguments
before all is working fine.
+ Interestingly with 5 instead of 6 char * arguments before I'm getting
+ the same error but without the output "Test". With less than 5 char *
+ arguments before all is working fine.
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https://bugs.launchpad.net/bugs/993193
Title:
Error with Valgrind on variadic functions
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