c/8411: Segmentation fault error in malloc

[Joe Buck]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8411

Have you checked this program with a memory-checking tool (electric fence,
valgrind, purify, etc) and verified that it doesn't have any memory 
allocation
errors (e.g. double-frees, writing beyond the end of an allocated 
object, etc.).
The most common cause of segmentation faults in malloc is this kind of 
user error,
and the problems tend to show up differently depending on optimization.