http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57046
Bug #: 57046
Summary: wrong code generated by gcc 4.8.0 on i686
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: matti...@acm.org
Created attachment 29917
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29917
Test case including driver demonstrating the bug
Gcc 4.8.0 silently miscompiles the attached short test case (emac.c) on 32-bit
x86 with -O2. It appears that the value returned from get_value is thrown away.
gcc -V output:
Using built-in specs.
COLLECT_GCC=/usr/local/gcc/4.8.0/bin/gcc
COLLECT_LTO_WRAPPER=/home/local/linux/gcc/4.8.0/bin/../libexec/gcc/i686-pc-linux-gnu/4.8.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.8.0/configure --prefix=/usr/local/gcc/4.8.0
--with-mpc=/tmp/extra --with-gmp=/tmp/extra --with-mpfr=/tmp/extra
--with-isl=/tmp/extra --with-cloog=/tmp/extra
--with-as=/usr/local/binutils/2.23.2/bin/as
--with-ld=/usr/local/binutils/2.23.2/bin/ld.gold
--enable-languages=c,c++,objc,go
Thread model: posix
gcc version 4.8.0 (GCC)
