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[PATCH] Fix PR88229
- From: Richard Biener <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 28 Nov 2018 11:57:19 +0100 (CET)
- Subject: [PATCH] Fix PR88229
Bootstrapped and tested on x86_64-unknonw-linux-gnu, applied.
Richard.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88229
* tree-ssa.c (non_rewritable_mem_ref_base): Check DECL_SIZE_UNIT
is an INTEGER_CST before accessing it so.
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c
index bd8b91f8b4b..e3eb4b05130 100644
--- a/gcc/tree-ssa.c
+++ b/gcc/tree-ssa.c
@@ -1446,6 +1446,7 @@ non_rewritable_mem_ref_base (tree ref)
return NULL_TREE;
/* For integral typed extracts we can use a BIT_FIELD_REF. */
if (DECL_SIZE (decl)
+ && TREE_CODE (DECL_SIZE_UNIT (decl)) == INTEGER_CST
&& (known_subrange_p
(mem_ref_offset (base),
wi::to_poly_offset (TYPE_SIZE_UNIT (TREE_TYPE (base))),