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[Bug c++/70709] New: gcc hangs on valid C++ code on x86_64-linux-gnu
- From: "su at cs dot ucdavis.edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 18 Apr 2016 01:24:55 +0000
- Subject: [Bug c++/70709] New: gcc hangs on valid C++ code on x86_64-linux-gnu
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70709
Bug ID: 70709
Summary: gcc hangs on valid C++ code on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk on
x86_64-linux-gnu.
It also affects 4.8.x and later, and is a regression from 4.7.x.
$ g++-trunk -v
Using built-in specs.
COLLECT_GCC=g++-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 20160417 (experimental) [trunk revision 235070] (GCC)
$
$ g++-4.7 -c small.cpp
$ clang++-3.8 -c small.cpp
$
$ g++-trunk -c small.cpp^C
$ timeout -s 9 10 g++-trunk -c small.cpp
Killed
$
---------------------
struct A
{
A (int);
};
struct B
{
B () {}
A a[0];
};
struct C
{
C () {}
B a[0];
};