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-rw-r--r--gcc/ada/gcc-interface/trans.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c
index eeb2aac..0d10019 100644
--- a/gcc/ada/gcc-interface/trans.c
+++ b/gcc/ada/gcc-interface/trans.c
@@ -975,6 +975,9 @@ fold_constant_decl_in_expr (tree exp)
case ARRAY_REF:
case ARRAY_RANGE_REF:
+ /* If the index is not itself constant, then nothing can be folded. */
+ if (!TREE_CONSTANT (TREE_OPERAND (exp, 1)))
+ return exp;
op0 = fold_constant_decl_in_expr (TREE_OPERAND (exp, 0));
if (op0 == TREE_OPERAND (exp, 0))
return exp;