https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71823
Bug ID: 71823
Summary: g++ segfaults with -mfma and -ftree-slp-vectorize
Product: gcc
Version: 6.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: nicolas.stinus at gmail dot com
Target Milestone: ---
Created attachment 38864
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38864&action=edit
Pre-processed test file filtered through creduce
Command run:
g++ -v -mfma -O2 -ftree-slp-vectorize -x c++-cpp-output main.i
Output:
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/6.1.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release
Thread model: posix
gcc version 6.1.1 20160602 (GCC)
COLLECT_GCC_OPTIONS='-v' '-mfma' '-O2' '-ftree-slp-vectorize' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-pc-linux-gnu/6.1.1/cc1plus -fpreprocessed main.i -quiet
-dumpbase main.i -mfma -mtune=generic -march=x86-64 -auxbase main -O2 -version
-ftree-slp-vectorize -o /tmp/ccH7gRRP.s
GNU C++14 (GCC) version 6.1.1 20160602 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.1.1 20160602, GMP version 6.1.0, MPFR
version 3.1.4-p1, MPC version 1.0.3, isl version 0.15
warning: GMP header version 6.1.0 differs from library version 6.1.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (GCC) version 6.1.1 20160602 (x86_64-pc-linux-gnu)
compiled by GNU C version 6.1.1 20160602, GMP version 6.1.0, MPFR
version 3.1.4-p1, MPC version 1.0.3, isl version 0.15
warning: GMP header version 6.1.0 differs from library version 6.1.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 9a234fd559755d378f3229409080f351
main.i:12:21: warning: ‘static
std::chrono::{anonymous}::system_clock::time_point
std::chrono::{anonymous}::system_clock::now()’ used but never defined
static time_point now();
^~~
main.i: In function ‘int main()’:
main.i:34:1: internal compiler error: Segmentation fault
main() {
^~~~
Please submit a full bug report,
with preprocessed source if appropriate.
