[PATCH] tree: Handle BITINT_TYPE in type_contains_placeholder_1 [PR112511]

[Jakub Jelinek <jakub@redhat.com>]

Hi!

The following testcase ICEs because BITINT_TYPE isn't handled in
type_contains_placeholder_1.  Given that Ada doesn't emit it, it doesn't
matter that much where exactly we handle it as right now it should never
contain a placeholder; I've picked the same spot as INTEGER_TYPE, but if
you prefer e.g. the one with OFFSET_TYPE above, I can move it there too.

Bootstrapped/regtested on x86_64-linux, ok for trunk?

2023-11-14  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/112511
	* tree.cc (type_contains_placeholder_1): Handle BITINT_TYPE like
	INTEGER_TYPE.

	* gcc.dg/pr112511.c: New test.

--- gcc/tree.cc.jj	2023-11-09 09:04:20.357518740 +0100
+++ gcc/tree.cc	2023-11-13 14:57:33.001715799 +0100
@@ -4210,6 +4210,7 @@ type_contains_placeholder_1 (const_tree
       return false;
 
     case INTEGER_TYPE:
+    case BITINT_TYPE:
     case REAL_TYPE:
     case FIXED_POINT_TYPE:
       /* Here we just check the bounds.  */
--- gcc/testsuite/gcc.dg/pr112511.c.jj	2023-11-13 15:00:13.872457749 +0100
+++ gcc/testsuite/gcc.dg/pr112511.c	2023-11-13 14:59:59.933653398 +0100
@@ -0,0 +1,17 @@
+/* PR middle-end/112511 */
+/* { dg-do compile { target bitint } } */
+/* { dg-options "-O2" } */
+
+struct T { _BitInt(22) a; };
+
+void
+bar (struct T t)
+{
+}
+
+void
+foo (void)
+{
+  struct T t;
+  bar (t);
+}

	Jakub