c - Different outputs in Valgrind across multiple machines -


in machine a reason bunch of:

==21855== invalid read of size 4 ==21855==    @ 0x422a26f: ??? (in /lib/i686/cmov/libc-2.11.3.so) ==21855==    0x4216e2f: vsnprintf (in /lib/i686/cmov/libc-2.11.3.so) ==21855==    0x41fe421: snprintf (in /lib/i686/cmov/libc-2.11.3.so) ==21855==    0x804f95b: put_lines (lines.c:354) ==21855==    0x805076b: examine_lines (lines.c:658) ==21855==    0x80509d8: read_lines (lines.c:715) ==21855==    0x804eed0: main (app.c:564) ==21855==  address 0x444230c 12 bytes inside block of size 13 alloc'd ==21855==    @ 0x40255bc: malloc (vg_replace_malloc.c:270) ==21855==    0x804ff80: read_str (lines.c:464) ==21855==    0x80501a2: read_type (lines.c:522) ==21855==    0x8050663: examine_lines (lines.c:631) ==21855==    0x80509d8: read_lines (lines.c:715) ==21855==    0x804eed0: main (app.c:564) ==21855==  ==21855== conditional jump or move depends on uninitialised value(s) ==21855==    @ 0x422a27d: ??? (in /lib/i686/cmov/libc-2.11.3.so) ==21855==    0x804f9a8: put_lines (lines.c:364) ==21855==    0x805076b: examine_lines (lines.c:658) ==21855==    0x80509d8: read_lines (lines.c:715) ==21855==    0x804eed0: main (app.c:564) ==21855==  uninitialised value created stack allocation ==21855==    @ 0x804f8f2: put_lines (lines.c:343)

running same valgrind command (even --leak-check=full) in machine b, don't errors

i'm using same valgrind version valgrind-3.8.1 in both machines.

same behavior when run other programs such as, htop (same version too).

valgrind --log-file="logfile" --tool=memcheck --leak-check=yes ./program

why happpen? , how can make valgrind consistent across machines?

update

code snippet:

void put_lines (char * name, char * date, char * month) {     char main_str[2048];      snprintf(main_str, sizeof (main_str), "%s-%s-%s", name, date, month);     main_str[sizeof(main_str)-1] = 0;     // more code }


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