Hi!
On the following testcase we ICE because when cloning the ctor using
tree-inline.c infrastructure we don't remap the type of INDIRECT_REF,
which needs to be remapped if it a variable length type, otherwise we
refer to the parameters of the original ctor rather than of the base
or complete ctor.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux, ok for
trunk?
2018-03-09 Jakub Jelinek <ja...@redhat.com>
PR c++/84767
* tree-inline.c (copy_tree_body_r): For INDIRECT_REF of a remapped
decl, use remap_type if we want to use the type.
* g++.dg/ext/vla18.C: New test.
--- gcc/tree-inline.c.jj 2018-02-13 21:21:38.000000000 +0100
+++ gcc/tree-inline.c 2018-03-09 13:05:10.355154860 +0100
@@ -1192,6 +1192,7 @@ copy_tree_body_r (tree *tp, int *walk_su
*tp = gimple_fold_indirect_ref (ptr);
if (! *tp)
{
+ type = remap_type (type, id);
if (TREE_CODE (ptr) == ADDR_EXPR)
{
*tp
--- gcc/testsuite/g++.dg/ext/vla18.C.jj 2018-03-09 13:11:27.863229118 +0100
+++ gcc/testsuite/g++.dg/ext/vla18.C 2018-03-09 13:10:54.319222521 +0100
@@ -0,0 +1,19 @@
+// PR c++/84767
+// { dg-do compile }
+// { dg-options "" }
+
+int v[1][10];
+
+struct A
+{
+ A (int);
+};
+
+A::A (int i)
+{
+ typedef int T[1][i];
+ T *x = (T *) v;
+ (*x)[0][0] = 0;
+}
+
+A a = 10;
Jakub
