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[Bug libc/7066] Probable buffer overrun in strtold()
- From: "nix at esperi dot org dot uk" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 5 Dec 2008 00:17:40 -0000
- Subject: [Bug libc/7066] Probable buffer overrun in strtold()
- References: <20081204004909.7066.nix@esperi.org.uk>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From nix at esperi dot org dot uk 2008-12-05 00:17 -------
It's using the same compile line that glibc's 'make check' uses, which
passes -std=gnu99 (IIRC: I don't have a build tree at the right point to verify
this right now).
The original testcase in glibc calls strtold() with many different inputs: only
this one crashes under -fstack-protector-all, and the corrupted stack is not in
the testing function but within glibc itself. So I don't see how e.g. pointer
width differences (not applicable on x86-32 anyway as far as I can see) could
cause a problem. It's not as if this is a varargs function on AIX or something.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=7066
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