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re PR tree-optimization/77697 (suspicious code in tree-ssa-forwprop.c)

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2016-09-22  Richard Biener  <rguenther@suse.de>

	PR middle-end/77697
	* gimple-fold.c (fold_array_ctor_reference): Turn asserts into
	fold fails.

From-SVN: r240353
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Richard Biener 2016-09-22 12:16:42 +00:00 committed by Richard Biener
parent 1f3131cb1e
commit 9ef2eff0d4
2 changed files with 10 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-09-22 Richard Biener <rguenther@suse.de>
PR middle-end/77697
* gimple-fold.c (fold_array_ctor_reference): Turn asserts into
fold fails.
2016-09-22 Richard Biener <rguenther@suse.de>
PR middle-end/77677

7
gcc/gimple-fold.c
View File

@ -5647,14 +5647,15 @@ fold_array_ctor_reference (tree type, tree ctor,
if (domain_type && TYPE_MIN_VALUE (domain_type))
{
/* Static constructors for variably sized objects makes no sense. */
gcc_assert (TREE_CODE (TYPE_MIN_VALUE (domain_type)) == INTEGER_CST);
if (TREE_CODE (TYPE_MIN_VALUE (domain_type)) != INTEGER_CST)
return NULL_TREE;
low_bound = wi::to_offset (TYPE_MIN_VALUE (domain_type));
}
else
low_bound = 0;
/* Static constructors for variably sized objects makes no sense. */
gcc_assert (TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (ctor))))
== INTEGER_CST);
if (TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (ctor)))) != INTEGER_CST)
return NULL_TREE;
elt_size = wi::to_offset (TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (ctor))));
/* We can handle only constantly sized accesses that are known to not