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Subject: [Bug c++/51854] [4.4/4.5/4.6/4.7 Regression] ICE in mangle.c with literal of complex floating type
Date: Mon, 16 Jan 2012 18:42:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51854

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-16 18:29:41 UTC ---
I wonder whether:
--- gcc/cp/mangle.c.jj    2012-01-13 21:47:31.000000000 +0100
+++ gcc/cp/mangle.c    2012-01-16 19:26:48.474088778 +0100
@@ -2927,6 +2927,25 @@ write_template_arg_literal (const tree v
     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;


isn't the right fix for this (of course, missing testcases etc.).