re PR c++/51854 (ICE in mangle.c with literal of complex floating type)

	PR c++/51854
	* mangle.c (write_template_arg_literal): Handle complex.

From-SVN: r183222

gcc/cp/ChangeLog

+2012-01-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/51854
+	* mangle.c (write_template_arg_literal): Handle complex.
+
 2012-01-16  Jason Merrill  <jason@redhat.com>
 
 	PR c++/51827

gcc/cp/mangle.c

@@ -2927,6 +2927,25 @@ write_template_arg_literal (const tree value)
 	write_real_cst (value);
 	break;
 
+      case COMPLEX_CST:
+	if (TREE_CODE (TREE_REALPART (value)) == INTEGER_CST
+	    && TREE_CODE (TREE_IMAGPART (value)) == INTEGER_CST)
+	  {
+	    write_integer_cst (TREE_REALPART (value));
+	    write_char ('_');
+	    write_integer_cst (TREE_IMAGPART (value));
+	  }
+	else if (TREE_CODE (TREE_REALPART (value)) == REAL_CST
+		 && TREE_CODE (TREE_IMAGPART (value)) == REAL_CST)
+	  {
+	    write_real_cst (TREE_REALPART (value));
+	    write_char ('_');
+	    write_real_cst (TREE_IMAGPART (value));
+	  }
+	else
+	  gcc_unreachable ();
+	break;
+
       case STRING_CST:
 	sorry ("string literal in function template signature");
 	break;

gcc/testsuite/ChangeLog

 2012-01-16  Jason Merrill  <jason@redhat.com>
 
+	PR c++/51854
+	* g++.dg/abi/mangle60.C: New.
+
 	PR c++/51827
 	* g++.dg/pch/mangle1.{C,Hs}: New.
 

gcc/testsuite/g++.dg/abi/mangle60.C

+// PR c++/51854
+// { dg-options "" }
+
+template <unsigned N> struct A;
+
+template <typename U, typename V>
+char foo(U, V);
+
+// { dg-final { scan-assembler "_Z3barIiEvP1AIXszcl3foocvT__ELCi0_42EEEE" } }
+template <typename U>
+void bar(A<sizeof(foo(U(), 42i))> *);
+
+// { dg-final { scan-assembler "_Z3bazIiEvP1AIXszcl3foocvT__ELCf00000000_00000000EEEE" } }
+template <typename U>
+void baz(A<sizeof(foo(U(), 0.0fj))> *);
+
+int main() {
+   bar<int>(0);
+   baz<int>(0);
+}