http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53746
vincenzo Innocente <vincenzo.innocente at cern dot ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[lto] segfault in |[lto] segfault in
|std::vector::__base_ctor |std::vector::__base_ctor
| |(with -fno-math-errno
| |-fipa-pta)
--- Comment #2 from vincenzo Innocente <vincenzo.innocente at cern dot ch>
2012-06-23 09:06:30 UTC ---
to reproduce the crash
get the preprocessed files
wget http://innocent.home.cern.ch/innocent/bugAlgo.tgz
tar -xzf bugAlgo.tgz
cd bugAlgo/
and run
export CXXGO="c++ -g -fPIC -fno-fat-lto-objects -flto -ffunction-sections -O2
-pipe -std=gnu++11 -msse3 -fvisibility-inlines-hidden -fno-math-errno
-fipa-pta"
echo $CXXGO
for f in *.ii
do
$CXXGO -c $f
done
$CXXGO -Wl,-v stubs.o -shared -o libstubs.so -Wl,-rpath=./
$CXXGO -Wl,-v CosmicClusterAlgo.o EndcapPiZeroDiscriminatorAlgo.o
HybridClusterAlgo.o Multi5x5BremRecoveryClusterAlgo.o PreshowerClusterAlgo.o
a1.o -shared -o libAlgo.so -Wl,-rpath=./ -L./ -lstubs
$CXXGO -Wl,-v HybridClusterTest.o -Wl,-rpath=./ -L./ -lAlgo -lstubs
./a.out 1 2
it will instead end correctly if one removed either -fno-math-errno or
-fipa-pta
or linking just
$CXXGO -Wl,-v CosmicClusterAlgo.o EndcapPiZeroDiscriminatorAlgo.o
HybridClusterAlgo.o Multi5x5BremRecoveryClusterAlgo.o -shared -o libAlgo.so
-Wl,-rpath=./ -L./ -lstubs
the main is just invoking a constructor contained in HybridClusterAlgo
the behavior is the same
on vanilla fedora 17,
with 4.7.1,
with gcc version 4.8.0 20120608
