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C++ PATCH for c++/46282 (ICE on invalid in grokbitfield)
- From: Jason Merrill <jason at redhat dot com>
- To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 01 Mar 2011 17:37:14 -0500
- Subject: C++ PATCH for c++/46282 (ICE on invalid in grokbitfield)
Testing the code of TREE_TYPE (width) doesn't work too well if TREE_TYPE
(width) is null, as for a type-dependent expression.
Tested x86_64-pc-linux-gnu, applied to trunk.
commit 48accfb6db3a227ccecbcaef809cfb89db42484d
Author: Jason Merrill <jason@redhat.com>
Date: Tue Mar 1 01:32:00 2011 -0500
PR c++/46282
* decl2.c (grokbitfield): Handle type-dependent width.
diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index 93d44a4..eb5d4f5 100644
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -1052,7 +1052,8 @@ grokbitfield (const cp_declarator *declarator,
if (width != error_mark_node)
{
/* The width must be an integer type. */
- if (!INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (TREE_TYPE (width)))
+ if (!type_dependent_expression_p (width)
+ && !INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (TREE_TYPE (width)))
error ("width of bit-field %qD has non-integral type %qT", value,
TREE_TYPE (width));
DECL_INITIAL (value) = width;
diff --git a/gcc/testsuite/g++.dg/cpp0x/regress/bitfield-err1.C b/gcc/testsuite/g++.dg/cpp0x/regress/bitfield-err1.C
new file mode 100644
index 0000000..a2e9d47
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/regress/bitfield-err1.C
@@ -0,0 +1,9 @@
+// PR c++/46282
+// { dg-options -std=c++0x }
+
+template<int>
+class A
+{
+ A : i() {} // { dg-message "" }
+ int i;
+};