https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67448
Bug ID: 67448
Summary: compiler crash#inline assembly#rvalue operand with
constraint "m"
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: barannikov88 at gmail dot com
Target Milestone: ---
$ cat t1.c
void f(int i)
{
__asm("" : : "m"(i += 1));
}
$gcc t1.c -S
t1.c: In function 'f':
t1.c:3:24: internal compiler error: in expand_gimple_stmt_1, at
cfgexpand.c:3391
__asm("" : : "m"(i += 1));
^
0x82b4249 expand_gimple_stmt_1
../../gcc-5.1.0.src/gcc/cfgexpand.c:3390
0x82b4249 expand_gimple_stmt
../../gcc-5.1.0.src/gcc/cfgexpand.c:3497
0x82b7746 expand_gimple_basic_block
../../gcc-5.1.0.src/gcc/cfgexpand.c:5509
0x82b9356 execute
../../gcc-5.1.0.src/gcc/cfgexpand.c:6127
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.
The operand is an rvalue and should be restricted from using within this
context, like 'i++' is. Strangely enough, 'i = 0' is allowed despite of the
fact that it is also an rvalue.
