[Bug c/27629] New: SIGSEGV in printstack() on Solaris 9

[sebor at roguewave dot com]

C and C++ programs compiled with gcc 4.1 die with a SIGSEGV in Solaris 9
printstack(). The same programs run successfully when compiled with 4.0.2 and
prior. If this is due to a Solaris bug it would be great if gcc could work
around it.

$ cat t.c && gcc -g t.c && ./a.out || gdb -q a.out
int printstack (int);

int main ()
{
    printstack (1);
}
Segmentation Fault (core dumped)
(gdb) run
Starting program: /tmp/a.out 

Program received signal SIGSEGV, Segmentation fault.
0xff2d6f24 in display_stack_info () from /usr/lib/libc.so.1
(gdb) where
#0  0xff2d6f24 in display_stack_info () from /usr/lib/libc.so.1
#1  0xff2d6a84 in walkcontext () from /usr/lib/libc.so.1
#2  0xff2d6fb4 in printstack () from /usr/lib/libc.so.1
#3  0x000105b4 in main () at t.c:5


-- 
           Summary: SIGSEGV in printstack() on Solaris 9
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sebor at roguewave dot com
 GCC build triplet: sparc-sun-solaris2.9
  GCC host triplet: sparc-sun-solaris2.9
GCC target triplet: sparc-sun-solaris2.9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27629