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[Bug c/42884] GCC (v4.3.3) fails to detect uninitialized variable
- From: "tstdenis at elliptictech dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Jan 2010 16:22:22 -0000
- Subject: [Bug c/42884] GCC (v4.3.3) fails to detect uninitialized variable
- References: <bug-42884-18720@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #15 from tstdenis at elliptictech dot com 2010-01-27 16:22 -------
(In reply to comment #14)
> As diglen has its address taken and we do not warn about uninitialized use
> of memory we do not warn.
>
I get that the compiler can't track if an external function actually
initializes a value through a pointer, but the "diglen = sizeof..." line should
be good enough for the positive case. In the false path though "diglen" is not
initialized nor its address taken.
--
tstdenis at elliptictech dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|enhancement |normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42884