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symtab/1439: solaris/gcc/dwarf-2 symbol table results in gdb core dump


>Number:         1439
>Category:       symtab
>Synopsis:       solaris/gcc/dwarf-2 symbol table results in gdb core dump
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 31 21:28:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Woody LaRue
>Release:        6.0
>Organization:
>Environment:
Solaris 7
g++ 3.2 configured to produce symbol table in dwarf-2
>Description:
I get a gdb core dump when loading the symbol table produced by g++ 3.2 configured with dwarf-2 on solaris 7.

In 6.0, I traced the problem to elfread.c line 401.
  size = (sizeof (struct stab_section_info) 
				      + (sizeof (CORE_ADDR)
					 * (max_index - 1)));
The calculated size is too small, and by adding debuging statements to the code, I was able to verify that we were writing past the end of the array.

I believe that the correct code is:
  size = (sizeof (struct stab_section_info) 
				      + (sizeof (CORE_ADDR)
					 * max_index));
>How-To-Repeat:
the nscsim test debug_ncelab shows this problem, but unfortunately the test is not easy to package up.
>Fix:
Change line 401 of elfread.c from
  size = (sizeof (struct stab_section_info) 
				      + (sizeof (CORE_ADDR)
					 * (max_index - 1)));

to
  size = (sizeof (struct stab_section_info) 
				      + (sizeof (CORE_ADDR)
					 * max_index));
>Release-Note:
>Audit-Trail:
>Unformatted:


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