This one fixes support for D-style variadic functions, specifically
where non-variadic parameters can be omitted entirely.

Iain
---
libiberty/

 2016-01-26  Iain Buclaw  <ibuc...@gdcproject.org>
 
	* d-demangle.c (dlang_function_args): Append ',' for variadic functions
	only if parameters were seen before the elipsis symbol.
	* testsuite/d-demangle-expected: Add coverage test for parameter-less
	variadic functions.

diff --git a/libiberty/d-demangle.c b/libiberty/d-demangle.c
index 9c4d459..9e5a8043 100644
--- a/libiberty/d-demangle.c
+++ b/libiberty/d-demangle.c
@@ -399,7 +399,9 @@ dlang_function_args (string *decl, const char *mangled)
 	  return mangled;
 	case 'Y': /* (variadic T t, ...) style.  */
 	  mangled++;
-	  string_append (decl, ", ...");
+	  if (n != 0)
+	    string_append (decl, ", ");
+	  string_append (decl, "...");
 	  return mangled;
 	case 'Z': /* Normal function.  */
 	  mangled++;
diff --git a/libiberty/testsuite/d-demangle-expected b/libiberty/testsuite/d-demangle-expected
index 11785f2..8f0b167 100644
--- a/libiberty/testsuite/d-demangle-expected
+++ b/libiberty/testsuite/d-demangle-expected
@@ -342,6 +342,10 @@ _D8demangle4testFaaYv
 demangle.test(char, char, ...)
 #
 --format=dlang
+_D8demangle4testFYv
+demangle.test(...)
+#
+--format=dlang
 _D8demangle4testFaaZv
 demangle.test(char, char)
 #

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