re PR c++/51530 ([C++0x] internal compiler error: in unify, at cp/pt.c:16854)

	PR c++/51530
	* pt.c (unify): Handle NULLPTR_TYPE.

From-SVN: r182505

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 5623bcf97b1ba81271619fc9ff2750f7525cc727..3da96feb02b8d504f43d85c6b9005721d0b5b0ee 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,8 @@
 2011-12-19  Jason Merrill  <jason@redhat.com>
 
+       PR c++/51530
+       * pt.c (unify): Handle NULLPTR_TYPE.
+
        PR c++/51526
        * semantics.c (build_data_member_initialization): Handle
        delegating constructor.

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 66d4c3fb7fe17ea9e00fdc391fea7e2bd03d2d55..769b610cc478e08ea17434853bf2be844973b965 100644 (file)
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -16614,6 +16614,7 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
     case BOOLEAN_TYPE:
     case ENUMERAL_TYPE:
     case VOID_TYPE:
+    case NULLPTR_TYPE:
       if (TREE_CODE (arg) != TREE_CODE (parm))
        return unify_type_mismatch (explain_p, parm, arg);
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9efe801c98309ddee7d279e0904017769233ac6c..7b349c922c57a4264e65e88f88b25f9d64ddbd0d 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-19  Jason Merrill  <jason@redhat.com>
+
+       PR c++/51530
+       * g++.dg/cpp0x/nullptr26.C: New.
+
 2011-12-19  Richard Sandiford  <rdsandiford@googlemail.com>
 
        * gcc.target/mips/mult-1.c: Require -O2.

diff --git a/gcc/testsuite/g++.dg/cpp0x/nullptr26.C b/gcc/testsuite/g++.dg/cpp0x/nullptr26.C
new file mode 100644 (file)
index 0000000..b7421b8
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/nullptr26.C
@@ -0,0 +1,13 @@
+// PR c++/51530
+// { dg-options -std=c++0x }
+
+template <class T, class U>
+void f(T, U);
+
+template <class T>
+void f(T, decltype(nullptr));
+
+int main()
+{
+  f(1, nullptr);
+}