https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78625
Bug ID: 78625
Summary: [7 Regression] ICE in invert_tree_comparison, at
fold-const.c:2483 w/ -O1 -Wmaybe-uninitialized
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-7.0.0-alpha20161127 snapshot fails when compiling the following snippet w/
-O1 (or -Og) -Wmaybe-uninitialized:
int
pu (int xl, int ee)
{
int db = xl % 1;
if (db < 1)
{
xl = (db < 1);
if ((xl & ee) == 0)
db = ee;
if (db == 0)
{
int vf;
do
{
if (ee != 1)
vf += ee;
}
while (vf < 0);
}
}
return db;
}
% gcc-7.0.0-alpha20161127 -O1 -Wmaybe-uninitialized -c kuhp4o2f.c
kuhp4o2f.c: In function 'pu':
kuhp4o2f.c:2:1: internal compiler error: in invert_tree_comparison, at
fold-const.c:2483
pu (int xl, int ee)
^~
According to the backtrace, this is likely a regression from r242639.
