https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115489
Roger Sayle <roger at nextmovesoftware dot com> changed:
What |Removed |Added
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Component|c |tree-optimization
--- Comment #3 from Roger Sayle <roger at nextmovesoftware dot com> ---
The call to gimplify_expr on line 651 of gimplify.cc (in internal_get_tmp_var)
doesn't check its return value, which for this test case is GS_ERROR.
It looks like internal_get_tmp_var's callers don't expect that it could ever
fail, so it's unclear whether returning NULL_RTX or error_mark_node would be
safe.
One approach might be to record the original type of val (which gets turned
into error_mark_node by the failing gimplify_expr call), then use this type to
call make_ssa_name if things have gone wrong [an uninitialized SSA name may
cause fewer downstream issues than an error_mark_node].
