https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82186
Bug ID: 82186
Summary: internal compiler error with static function
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: criovx at gmail dot com
Target Milestone: ---
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/7.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc-multilib/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 --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 7.2.0 (GCC)
$ cat bug.c
unsigned char *trans;
unsigned int maxstates;
static void evolven(unsigned int *count) {
unsigned char newval, oldval = 0;
newval = ((unsigned char(*)[maxstates][maxstates])trans)[0][0][0];
if (newval != oldval) {
(*count)++;
}
}
void test(unsigned int *count) {
evolven(count);
}
$ gcc -c bug.c
$ gcc -O -c bug.c
bug.c: In function ‘test’:
bug.c:13:2: internal compiler error: Segmentation fault
evolven(count);
^~~~~~~~~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
There is no problem if I do not define evolven as static function
or do not enable optimization.
