Add support for extern "C" thread_local

Examples/test-suite/cpp0x_thread_local.i

@@ -15,6 +15,7 @@ static thread_local int stval;
 thread_local static int tsval;
 extern thread_local int etval;
 thread_local extern int teval;
+extern "C" thread_local int ectval;
 
 thread_local int ThreadLocals::stval = 11;
 thread_local int ThreadLocals::tsval = 22;
@@ -26,4 +27,5 @@ thread_local const int ThreadLocals::tscval99;
 // externs
 thread_local int etval = 33;
 thread_local int teval = 44;
+thread_local int ectval = 55;
 %}

Examples/test-suite/java/cpp0x_thread_local_runme.java

@@ -39,5 +39,9 @@ public class cpp0x_thread_local_runme {
     cpp0x_thread_local.setTeval(-55);
     if (cpp0x_thread_local.getTeval() != -55)
       throw new RuntimeException();
+
+    cpp0x_thread_local.setEctval(-55);
+    if (cpp0x_thread_local.getEctval() != -55)
+      throw new RuntimeException();
   }
 }

Examples/test-suite/python/cpp0x_thread_local_runme.py

@@ -28,3 +28,7 @@ cvar.teval = -55
 if cvar.teval != -55:
   raise RuntimeError
 
+cvar.ectval = -66
+if cvar.ectval != -66:
+  raise RuntimeError
+

Source/CParse/parser.y

@@ -1491,8 +1491,9 @@ static void new_feature(const char *featurename, String *val, Hash *featureattri
 
 /* check if a function declaration is a plain C object */
 static int is_cfunction(Node *n) {
-  if (!cparse_cplusplus || cparse_externc) return 1;
-  if (Cmp(Getattr(n,"storage"),"externc") == 0) {
+  if (!cparse_cplusplus || cparse_externc)
+    return 1;
+  if (Swig_storage_isexternc(n)) {
     return 1;
   }
   return 0;
@@ -5034,6 +5035,14 @@ storage_class  : EXTERN { $$ = "extern"; }
 		     $$ = 0;
 		   }
                }
+               | EXTERN string THREAD_LOCAL {
+                   if (strcmp($2,"C") == 0) {
+		     $$ = "externc thread_local";
+		   } else {
+		     Swig_warning(WARN_PARSE_UNDEFINED_EXTERN,cparse_file, cparse_line,"Unrecognized extern type \"%s\".\n", $2);
+		     $$ = 0;
+		   }
+               }
                | STATIC { $$ = "static"; }
                | TYPEDEF { $$ = "typedef"; }
                | VIRTUAL { $$ = "virtual"; }

Source/Modules/clisp.cxx

@@ -148,7 +148,7 @@ int CLISP::top(Node *n) {
 int CLISP::functionWrapper(Node *n) {
   is_function = 1;
   String *storage = Getattr(n, "storage");
-  if (!extern_all_flag && (!storage || (!Swig_storage_isextern(n) && Strcmp(storage, "externc"))))
+  if (!extern_all_flag && (!storage || (!Swig_storage_isextern(n) && !Swig_storage_isexternc(n))))
     return SWIG_OK;
 
   String *func_name = Getattr(n, "sym:name");
@@ -217,10 +217,9 @@ int CLISP::constantWrapper(Node *n) {
 
 int CLISP::variableWrapper(Node *n) {
   is_function = 0;
-  //  SwigType *type=;
   String *storage = Getattr(n, "storage");
 
-  if (!extern_all_flag && (!storage || (!Swig_storage_isextern(n) && Strcmp(storage, "externc"))))
+  if (!extern_all_flag && (!storage || (!Swig_storage_isextern(n) && !Swig_storage_isexternc(n))))
     return SWIG_OK;
 
   String *var_name = Getattr(n, "sym:name");

Source/Modules/lang.cxx

@@ -985,7 +985,7 @@ int Language::cDeclaration(Node *n) {
 	      }
 	    }
 	    Printf(f_header, ";\n");
-	  } else if (Cmp(storage, "externc") == 0) {
+	  } else if (Swig_storage_isexternc(n)) {
 	    /* here 'extern "C"' is needed */
 	    String *str = SwigType_str(ty, name);
 	    Printf(f_header, "extern \"C\" %s;\n", str);

Source/Swig/misc.c

@@ -273,6 +273,17 @@ int Swig_storage_isextern(Node *n) {
   return storage ? Strcmp(storage, "extern") == 0 || Strncmp(storage, "extern ", 7) == 0 : 0;
 }
 
+/* -----------------------------------------------------------------------------
+ * Swig_storage_isexternc()
+ *
+ * Determine if the storage class specifier is externc (but not plain extern)
+ * ----------------------------------------------------------------------------- */
+
+int Swig_storage_isexternc(Node *n) {
+  const String *storage = Getattr(n, "storage");
+  return storage ? Strcmp(storage, "externc") == 0 || Strncmp(storage, "externc ", 8) == 0 : 0;
+}
+
 /* -----------------------------------------------------------------------------
  * Swig_storage_isstatic_custom()
  *

Source/Swig/swig.h

@@ -316,6 +316,7 @@ extern int        ParmList_is_compactdefargs(ParmList *p);
   extern String *Swig_filename_escape(String *filename);
   extern void Swig_filename_unescape(String *filename);
   extern int Swig_storage_isextern(Node *n);
+  extern int Swig_storage_isexternc(Node *n);
   extern int Swig_storage_isstatic_custom(Node *n, const_String_or_char_ptr storage);
   extern int Swig_storage_isstatic(Node *n);
   extern String *Swig_string_escape(String *s);