The following C++ code crashes the mainline compiler on
x86_64-unknown-linux-gnu when compiled with -O3:
===================================
struct A
{
double x[4];
};
struct B
{
A y[2];
};
A foo(B *p)
{
for ( int i=0; i<4; ++i )
p->y[1].x[i]=0;
A a;
return a;
}
===================================
bug.cc: In function 'A foo(B*)':
bug.cc:11: internal compiler error: in add_virtual_operand, at
tree-ssa-operands.c:1867
Please submit a full bug report,
In fact "-O2" is enough to trigger the bug in 64bit mode, but
in conjunction with "-m32" I need "-O3".
The bug is probably related to PR 26338, but I can't test Ada
and trigger the bug mentioned in the first comment.
--
Summary: [4.2 regression] ICE in add_virtual_operand, at tree-
ssa-operands.c:1867
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26443
