https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70641
Bug ID: 70641
Summary: ICE on valid code at -O1 and above on
x86_64-linux-gnu: verify_gimple failed
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 at
-O1 and above on x86_64-linux-gnu in both 32-bit and 64-bit modes.
This is a regression from 5.3.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/6.0.0/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 6.0.0 20160412 (experimental) [trunk revision 234895] (GCC)
$
$ g++-trunk -O0 -c small.cpp
$ g++-5.3 -O1 -c small.cpp
$
$ g++-trunk -O1 -c small.cpp
small.cpp: In function ‘void foo()’:
small.cpp:9:1: error: statement marked for throw, but doesn’t
}
^
# .MEM_2 = VDEF <.MEM_1(D)>
foo ();
small.cpp:9:1: internal compiler error: verify_gimple failed
0xd9bd4f verify_gimple_in_cfg(function*, bool)
../../gcc-source-trunk/gcc/tree-cfg.c:5125
0xc8a392 execute_function_todo
../../gcc-source-trunk/gcc/passes.c:1958
0xc8ac7b execute_todo
../../gcc-source-trunk/gcc/passes.c:2010
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.
$
-----------------------------
void foo ()
{
try {
foo ();
}
catch ( ... ) {
__builtin_abort ();
}
}
