https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68146
Bug ID: 68146
Summary: ice in gimple_stmt_nonnegative_warnv_p with -O2
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 36613
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36613&action=edit
FORTRAN source code
The attached FORTRAN code, when compiled with -c -O2 on x86_64,
does this
internal compiler error: Segmentation fault
0xc4d67f crash_signal
../../src/trunk/gcc/toplev.c:353
0x991e56 gimple_stmt_nonnegative_warnv_p(gimple*, bool*, int)
../../src/trunk/gcc/gimple-fold.c:6266
0x991f21 gimple_phi_nonnegative_warnv_p
../../src/trunk/gcc/gimple-fold.c:6251
0x991f21 gimple_stmt_nonnegative_warnv_p(gimple*, bool*, int)
../../src/trunk/gcc/gimple-fold.c:6276
0x92d9f5 tree_expr_nonnegative_p(tree_node*)
../../src/trunk/gcc/fold-const.c:13164
gimple-fold.c:6266 is
switch (gimple_code (stmt))
