The attached program fails when compiled with -fprofile-arcs -O2. This is a
unit test of a matrix library, and by failing I mean that it detects a wrong
behavior.
Valgrind reports an "Conditional jump or move depends on uninitialised
value(s)".
It works fine with gcc 4.2.4 and 4.4.1 regardless of the compilation options.
It also works also fine with 4.3.3 if we remove the -fprofile-arcs flag.
By "fine", I also mean valgrind does not report any error.
--
Summary: Regression: broken generated code when using -fprofile-
arcs and -O2
Product: gcc
Version: 4.3.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gael dot guennebaud at gmail dot com
GCC build triplet: 4.3.3
GCC host triplet: x86_64-suse-linux
GCC target triplet: x86_64-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42255
