Hello,

I have encountered a gdb crash (gdb 7.3.1 based qnx gdb) in function 
cp_scan_for_anonymous_namespace.

What happens is that we get into 'define_symbol' function having an 
objfile without any symtabs. cp_scan_for_anonymous_namespaces 
dereferences symbol->symtab and crashes gdb.

This is all observed/debugged on gdb7.3.1 code base, but from looking at 
HEAD code, the possibility still exists.


I haven't created a testcase yet (the case I have is quite complicated 
with numerous shared objects involved and a core).


There are no regressions in existing test suite, tested on 
"x86_64-unknown-linux-gnu".


Thanks,

Aleksandar Ristovski




ChangeLog:


2011-10-20  Aleksandar Ristovski  <aristovski@qnx.com>

         * cp-namespace.c (cp_scan_for_anonymous_namespaces): Changed 
function
         arguments by adding OBJFILE.  Instead of getting objfile from
         symbol's symtab, use new argument OBJFILE.
         * cp-support.h (cp_scan_for_anonymous_namespaces): Changed function
         arguments by adding OBJFILE.
         * gdb/dwarf2read.c (new_symbol_full): Change call to
         cp_scan_for_anonymous_namespaces to match new signature.
         * gdb/stabsread.c (define_symbol): Change call to
         cp_scan_for_anonymous_namespaces to match new signature.