85 lines
2.1 KiB
Diff
85 lines
2.1 KiB
Diff
2017-12-23 Jakub Jelinek <jakub@redhat.com>
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PR c++/83556
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* tree.c (replace_placeholders_r): Pass NULL as last argument to
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cp_walk_tree instead of d->pset. If non-TREE_CONSTANT and
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non-PLACEHOLDER_EXPR tree has been seen already, set *walk_subtrees
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to false and return.
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(replace_placeholders): Pass NULL instead of &pset as last argument
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to cp_walk_tree.
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* g++.dg/cpp0x/pr83556.C: New test.
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--- gcc/cp/tree.c.jj 2017-12-15 16:10:37.000000000 +0100
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+++ gcc/cp/tree.c 2017-12-22 23:24:16.720428548 +0100
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@@ -3106,6 +3106,11 @@ replace_placeholders_r (tree* t, int* wa
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{
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constructor_elt *ce;
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vec<constructor_elt,va_gc> *v = CONSTRUCTOR_ELTS (*t);
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+ if (d->pset->add (*t))
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+ {
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+ *walk_subtrees = false;
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+ return NULL_TREE;
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+ }
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for (unsigned i = 0; vec_safe_iterate (v, i, &ce); ++i)
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{
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tree *valp = &ce->value;
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@@ -3125,7 +3130,7 @@ replace_placeholders_r (tree* t, int* wa
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valp = &TARGET_EXPR_INITIAL (*valp);
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}
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d->obj = subob;
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- cp_walk_tree (valp, replace_placeholders_r, data_, d->pset);
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+ cp_walk_tree (valp, replace_placeholders_r, data_, NULL);
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d->obj = obj;
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}
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*walk_subtrees = false;
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@@ -3133,6 +3138,8 @@ replace_placeholders_r (tree* t, int* wa
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}
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default:
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+ if (d->pset->add (*t))
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+ *walk_subtrees = false;
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break;
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}
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@@ -3161,7 +3168,7 @@ replace_placeholders (tree exp, tree obj
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replace_placeholders_t data = { obj, false, &pset };
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if (TREE_CODE (exp) == TARGET_EXPR)
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tp = &TARGET_EXPR_INITIAL (exp);
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- cp_walk_tree (tp, replace_placeholders_r, &data, &pset);
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+ cp_walk_tree (tp, replace_placeholders_r, &data, NULL);
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if (seen_p)
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*seen_p = data.seen;
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return exp;
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--- gcc/testsuite/g++.dg/cpp0x/pr83556.C.jj 2017-12-22 23:30:10.771126002 +0100
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+++ gcc/testsuite/g++.dg/cpp0x/pr83556.C 2017-12-22 23:29:21.000000000 +0100
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@@ -0,0 +1,28 @@
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+// PR c++/83556
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+// { dg-do run { target c++11 } }
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+
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+int
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+foo ()
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+{
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+ return 1;
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+}
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+
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+struct A
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+{
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+ int a = foo ();
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+ int b = 1;
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+ int c = a ? 1 * b : 2 * b;
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+};
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+
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+struct B
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+{
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+ A d {};
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+};
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+
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+int
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+main ()
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+{
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+ B e {};
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+ if (e.d.c != 1)
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+ __builtin_abort ();
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+}
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