https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86025
Bug ID: 86025
Summary: ICE with -Wduplicated-branches and OpenMP critical
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zed.three at gmail dot com
Target Milestone: ---
Created attachment 44221
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44221&action=edit
Preprocessed output
Compiling the following MVCE with "-Wduplicated-branches -fopenmp" causes an
ICE.
I've checked with 7.3.1 and 8.0.1. It's very similar to 79672, but with a
different pragma.
Dropping "(foo)" makes the ICE go away.
#include <omp.h>
void foo() {
if (false) {
#pragma omp parallel
#pragma omp critical (foo)
if (false) {
}
}
}
Output:
Using built-in specs.
COLLECT_GCC=g++-8
OFFLOAD_TARGET_NAMES=hsa:nvptx-none
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,ada,go
--enable-offload-targets=hsa,nvptx-none=/usr/nvptx-none, --without-cuda-driver
--enable-checking=release --disable-werror
--with-gxx-include-dir=/usr/include/c++/8 --enable-ssp --disable-libssp
--disable-libvtv --disable-cet --disable-libcc1 --enable-plugin
--with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit
--enable-libstdcxx-allocator=new --disable-libstdcxx-pch
--enable-version-specific-runtime-libs --with-gcc-major-version-only
--enable-linker-build-id --enable-linux-futex --enable-gnu-indirect-function
--program-suffix=-8 --without-system-libunwind --enable-multilib
--with-arch-32=x86-64 --with-tune=generic --build=x86_64-suse-linux
--host=x86_64-suse-linux
Thread model: posix
gcc version 8.0.1 20180425 (prerelease) [gcc-8-branch revision 259638] (SUSE
Linux)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-Wduplicated-branches' '-fopenmp'
'-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread'
/usr/lib64/gcc/x86_64-suse-linux/8/cc1plus -E -quiet -v -D_GNU_SOURCE
-D_REENTRANT gcc_crash.cxx -mtune=generic -march=x86-64 -Wduplicated-branches
-fopenmp -fpch-preprocess -o gcc_crash.ii
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/8
/usr/include/c++/8/x86_64-suse-linux
/usr/include/c++/8/backward
/usr/lib64/gcc/x86_64-suse-linux/8/include
/usr/local/include
/usr/lib64/gcc/x86_64-suse-linux/8/include-fixed
/usr/lib64/gcc/x86_64-suse-linux/8/../../../../x86_64-suse-linux/include
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-Wduplicated-branches' '-fopenmp'
'-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread'
/usr/lib64/gcc/x86_64-suse-linux/8/cc1plus -fpreprocessed gcc_crash.ii -quiet
-dumpbase gcc_crash.cxx -mtune=generic -march=x86-64 -auxbase gcc_crash
-Wduplicated-branches -version -fopenmp -o gcc_crash.s
GNU C++14 (SUSE Linux) version 8.0.1 20180425 (prerelease) [gcc-8-branch
revision 259638] (x86_64-suse-linux)
compiled by GNU C version 8.0.1 20180425 (prerelease) [gcc-8-branch
revision 259638], GMP version 6.1.2, MPFR version 4.0.1-p6, MPC version 1.1.0,
isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (SUSE Linux) version 8.0.1 20180425 (prerelease) [gcc-8-branch
revision 259638] (x86_64-suse-linux)
compiled by GNU C version 8.0.1 20180425 (prerelease) [gcc-8-branch
revision 259638], GMP version 6.1.2, MPFR version 4.0.1-p6, MPC version 1.1.0,
isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: ca1e18c23ccd29ea8279af847a2b27d0
gcc_crash.cxx: In function ‘void foo()’:
gcc_crash.cxx:10:1: internal compiler error: in add_expr, at tree.c:7417
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.
