https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77905
Bug ID: 77905
Summary: ICE at -Os and above in both 32-bit and 64-bit modes
on x86_64-linux-gnu (internal compiler error: in
ipa_comdats, at ipa-comdats.c:352)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 7.0.0 20161008 (experimental) [trunk revision 240893] (GCC)
$
$ gcc-trunk -c -O2 small.C
small.C:17:19: internal compiler error: in ipa_comdats, at ipa-comdats.c:352
C::C(int) : A(1) {}
^
0x15145eb ipa_comdats
../../gcc-source-trunk/gcc/ipa-comdats.c:352
0x15145eb execute
../../gcc-source-trunk/gcc/ipa-comdats.c:412
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
$ cat small.C
struct A {
A(int);
};
struct B : A {
B();
} A;
struct C : virtual A {
C(int);
};
A::A(int p1) {
if (p1)
A(0);
}
B::B() : A(1) {}
C::C(int) : A(1) {}
$
