https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64879
Bug ID: 64879
Summary: ICE for -O3 when calling a transactional method from a
transaction inside a for loop
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bjmnbraun at gmail dot com
Created attachment 34629
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34629&action=edit
Preproccessed source code
The following code leads to ICE on g++-4.9.2 with -O3. Lower optimization modes
compile correctly.
test.cc:
int d;
void foo(){
__transaction_atomic {
d++;
}
}
int main() {
for(int i = 0; i < 2; i++){
__transaction_atomic {
foo();
}
std::vector<int> myVec;
myVec.push_back(40);
}
}
the error output is
test.cc: In function ‘int main()’:
test.cc:33:5: internal compiler error: Segmentation fault
int main() {
compiled with
g++ -v -std=c++11 -fgnu-tm -O3 -o test.out test.cc
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
4.9.2-0ubuntu1~14.04' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Ubuntu 4.9.2-0ubuntu1~14.04)
COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-fgnu-tm' '-O3' '-o' 'test.out'
'-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread'
/usr/lib/gcc/x86_64-linux-gnu/4.9/cc1plus -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE -D_REENTRANT test.cc -quiet -dumpbase test.cc
-mtune=generic -march=x86-64 -auxbase test -O3 -std=c++11 -version -fgnu-tm
-fstack-protector -Wformat -Wformat-security -o /tmp/ccoWI5gH.s
GNU C++ (Ubuntu 4.9.2-0ubuntu1~14.04) version 4.9.2 (x86_64-linux-gnu)
compiled by GNU C version 4.9.2, GMP version 5.1.3, MPFR version 3.1.2-p3,
MPC version 1.0.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/4.9"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/4.9
/usr/include/x86_64-linux-gnu/c++/4.9
/usr/include/c++/4.9/backward
/usr/lib/gcc/x86_64-linux-gnu/4.9/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/4.9/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C++ (Ubuntu 4.9.2-0ubuntu1~14.04) version 4.9.2 (x86_64-linux-gnu)
compiled by GNU C version 4.9.2, GMP version 5.1.3, MPFR version 3.1.2-p3,
MPC version 1.0.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: bb3a956465d772c916e7b708c90318b2
