Re: Reading from uninitialized memory in ltdl.c's version of realloc...

[Tom Epperly]

Somebody questioned the validity of my bug report because of the message 
from gdb, "gdb: Symbol `emacs_ctlx_keymap' has different size in shared 
object, consider re-linking".  According to the Debian bug report on 
this issue, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=153972, 
this message doesn't indicate a serious problem, and the message is 
unrelated to my example program.

The seg fault occurs without gdb too:

address@hidden/tmp/testcase]>make CFLAGS=-g ltdl.o
gcc -DHAVE_CONFIG_H -I. -I. -I.     -g -c ltdl.c
address@hidden/tmp/testcase]>gcc -o a.out ltdl.o -ldl
address@hidden/tmp/testcase]>a.out
a.out: Command not found.
address@hidden/tmp/testcase]>./a.out
Segmentation fault

I added main at the bottom of ltdl.c:

int main(int argc, char **argv)
{
 void *m1 = malloc(128);
 rpl_realloc(m1, 1000000);
}

Tom