Sync libiberty with GCC.

libiberty/ChangeLog:
	* d-demangle.c (dlang_call_convention): Handle extern Objective-C
	function calling convention.
	(dlang_call_convention_p): Likewise.
	(dlang_type): Likewise.
	* testsuite/d-demangle-expected: Add coverage tests.

	* 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.

	* d-demangle.c (dlang_type): Handle function types only in the context
	of seeing a pointer type symbol.
	* testsuite/d-demangle-expected: Update function pointer tests.

3 files changed, 71 insertions, 30 deletions

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 77c1ecbf3fc..358a6b0f586 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,24 @@
+2016-01-27  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* d-demangle.c (dlang_call_convention): Handle extern Objective-C
+	function calling convention.
+	(dlang_call_convention_p): Likewise.
+	(dlang_type): Likewise.
+	* testsuite/d-demangle-expected: Add coverage tests.
+
+2016-01-27  Iain Buclaw  <ibuclaw@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.
+
+2016-01-27  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* d-demangle.c (dlang_type): Handle function types only in the context
+	of seeing a pointer type symbol.
+	* testsuite/d-demangle-expected: Update function pointer tests.
+
 2016-01-05  Mike Frysinger  <vapier@gentoo.org>
 
 	* argv.c (dupargv): Change arg to char * const *.  Update comment.
diff --git a/libiberty/d-demangle.c b/libiberty/d-demangle.c
index 3d7ccf67985..4ad90a6c58c 100644
--- a/libiberty/d-demangle.c
+++ b/libiberty/d-demangle.c
@@ -1,5 +1,5 @@
 /* Demangler for the D programming language
-   Copyright 2014, 2015 Free Software Foundation, Inc.
+   Copyright 2014, 2015, 2016 Free Software Foundation, Inc.
    Written by Iain Buclaw (ibuclaw@gdcproject.org)
 
 This file is part of the libiberty library.
@@ -223,6 +223,10 @@ dlang_call_convention (string *decl, const char *mangled)
       mangled++;
       string_append (decl, "extern(C++) ");
       break;
+    case 'Y': /* (Objective-C) */
+      mangled++;
+      string_append (decl, "extern(Objective-C) ");
+      break;
     default:
       return NULL;
     }
@@ -399,7 +403,9 @@ 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++;
@@ -533,6 +539,15 @@ dlang_type (string *decl, const char *mangled)
     }
     case 'P': /* pointer (T*) */
       mangled++;
+      /* Function pointer types don't include the trailing asterisk.  */
+      switch (*mangled)
+	{
+	case 'F': case 'U': case 'W':
+	case 'V': case 'R': case 'Y':
+	  mangled = dlang_function_type (decl, mangled);
+	  string_append (decl, "function");
+	  return mangled;
+	}
       mangled = dlang_type (decl, mangled);
       string_append (decl, "*");
       return mangled;
@@ -564,13 +579,6 @@ dlang_type (string *decl, const char *mangled)
       mangled++;
       return dlang_parse_tuple (decl, mangled);
 
-    /* Function types */
-    case 'F': case 'U': case 'W':
-    case 'V': case 'R':
-      mangled = dlang_function_type (decl, mangled);
-      string_append (decl, "function");
-      return mangled;
-
     /* Basic types */
     case 'n':
       mangled++;
@@ -1334,7 +1342,7 @@ dlang_call_convention_p (const char *mangled)
   switch (*mangled)
     {
     case 'F': case 'U': case 'V':
-    case 'W': case 'R':
+    case 'W': case 'R': case 'Y':
       return 1;
 
     default:
diff --git a/libiberty/testsuite/d-demangle-expected b/libiberty/testsuite/d-demangle-expected
index 2b1cc4f2b2f..04d39f41015 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)
 #
@@ -390,26 +394,34 @@ _D8demangle4testFDRZaZv
 demangle.test(extern(C++) char() delegate)
 #
 --format=dlang
-_D8demangle4testFFZaZv
+_D8demangle4testFDYZaZv
+demangle.test(extern(Objective-C) char() delegate)
+#
+--format=dlang
+_D8demangle4testFPFZaZv
 demangle.test(char() function)
 #
 --format=dlang
-_D8demangle4testFUZaZv
+_D8demangle4testFPUZaZv
 demangle.test(extern(C) char() function)
 #
 --format=dlang
-_D8demangle4testFWZaZv
+_D8demangle4testFPWZaZv
 demangle.test(extern(Windows) char() function)
 #
 --format=dlang
-_D8demangle4testFVZaZv
+_D8demangle4testFPVZaZv
 demangle.test(extern(Pascal) char() function)
 #
 --format=dlang
-_D8demangle4testFRZaZv
+_D8demangle4testFPRZaZv
 demangle.test(extern(C++) char() function)
 #
 --format=dlang
+_D8demangle4testFPYZaZv
+demangle.test(extern(Objective-C) char() function)
+#
+--format=dlang
 _D8demangle4testFDFNaZaZv
 demangle.test(char() pure delegate)
 #
@@ -466,59 +478,59 @@ _D8demangle4testFNjNkDFNjZaZv
 demangle.test(return char() return delegate)
 #
 --format=dlang
-_D8demangle4testFFNaZaZv
+_D8demangle4testFPFNaZaZv
 demangle.test(char() pure function)
 #
 --format=dlang
-_D8demangle4testFFNbZaZv
+_D8demangle4testFPFNbZaZv
 demangle.test(char() nothrow function)
 #
 --format=dlang
-_D8demangle4testFFNcZaZv
+_D8demangle4testFPFNcZaZv
 demangle.test(char() ref function)
 #
 --format=dlang
-_D8demangle4testFFNdZaZv
+_D8demangle4testFPFNdZaZv
 demangle.test(char() @property function)
 #
 --format=dlang
-_D8demangle4testFFNeZaZv
+_D8demangle4testFPFNeZaZv
 demangle.test(char() @trusted function)
 #
 --format=dlang
-_D8demangle4testFFNfZaZv
+_D8demangle4testFPFNfZaZv
 demangle.test(char() @safe function)
 #
 --format=dlang
-_D8demangle4testFFNiZaZv
+_D8demangle4testFPFNiZaZv
 demangle.test(char() @nogc function)
 #
 --format=dlang
-_D8demangle4testFFNaNbZaZv
+_D8demangle4testFPFNaNbZaZv
 demangle.test(char() pure nothrow function)
 #
 --format=dlang
-_D8demangle4testFFNbNaZaZv
+_D8demangle4testFPFNbNaZaZv
 demangle.test(char() nothrow pure function)
 #
 --format=dlang
-_D8demangle4testFFNdNfNaZaZv
+_D8demangle4testFPFNdNfNaZaZv
 demangle.test(char() @property @safe pure function)
 #
 --format=dlang
-_D8demangle4testFNjFZaZv
+_D8demangle4testFNjPFZaZv
 demangle.test(char() function)
 #
 --format=dlang
-_D8demangle4testFNkFZaZv
+_D8demangle4testFNkPFZaZv
 demangle.test(return char() function)
 #
 --format=dlang
-_D8demangle4testFFNjZaZv
+_D8demangle4testFPFNjZaZv
 demangle.test(char() return function)
 #
 --format=dlang
-_D8demangle4testFNjNkFNjZaZv
+_D8demangle4testFNjNkPFNjZaZv
 demangle.test(return char() return function)
 #
 --format=dlang
@@ -989,7 +1001,7 @@ object.TypeInfo_Array.argTypes(out TypeInfo, out TypeInfo)
 #
 --format=dlang
 _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ7tryExecMFMDFZvZv
-rt.dmain2._d_run_main(int, char**, extern(C) int(char[][]) function*).tryExec(scope void() delegate)
+rt.dmain2._d_run_main(int, char**, extern(C) int(char[][]) function).tryExec(scope void() delegate)
 #
 --format=dlang
 _D6object9Exception6__ctorMFNaNbNfAyaAyamC6object9ThrowableZC9Exception