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Fix for PR70492
- From: Marcel BÃhme <boehme dot marcel at gmail dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Fri, 1 Apr 2016 11:03:52 +0800
- Subject: Fix for PR70492
- Authentication-results: sourceware.org; auth=none
Hi,
This fixes the invalid write of size 8 detailed in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70492
Handle the special case when consume_count returns -1 due to an integer overflow when parsing the length of the virtual table qualifier in cplus-dem.c:2994 (gnu_special).
Index: libiberty/cplus-dem.c
===================================================================
--- libiberty/cplus-dem.c (revision 234663)
+++ libiberty/cplus-dem.c (working copy)
@@ -3001,6 +3001,11 @@ gnu_special (work, mangled, declp)
success = 1;
break;
}
+ else if (n == -1)
+ {
+ success = 0;
+ break;
+ }
}
else
{