varasm.c (output_addressed_constants): For CONST_DECLs, output the initializer if present.

[gcc/ChangeLog]
2004-11-12  Ziemowit Laski  <zlaski@apple.com>

       * varasm.c (output_addressed_constants): For CONST_DECLs,
       output the initializer if present.

[gcc/testsuite/ChangeLog]
2004-11-12  Ziemowit Laski  <zlaski@apple.com>

       * objc.dg/const-str-8.m, objc.dg/const-str-9.m:
       New tests.

From-SVN: r90569

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2004-11-12  Ziemowit Laski  <zlaski@apple.com>
+
+	* varasm.c (output_addressed_constants): For CONST_DECLs,
+	output the initializer if present.
+
 2004-11-12  Ziemowit Laski  <zlaski@apple.com>
 
 	* config/rs6000/darwin.h: Fix confusing typo in comment.

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2004-11-12  Ziemowit Laski  <zlaski@apple.com>
+
+	* objc.dg/const-str-8.m, objc.dg/const-str-9.m:
+	New tests.
+
 2004-11-12  Mark Mitchell <mark@codesourcery.com>
 
 	* lib/gcc-dg.exp (dg-forbid-option): New function.

gcc/testsuite/objc.dg/const-str-8.m

@@ -0,0 +1,39 @@
+/* Test for assigning compile-time constant-string objects to static variables.  */
+/* Contributed by Ziemowit Laski <zlaski@apple.com>  */
+
+/* { dg-options "-fnext-runtime -fconstant-string-class=Foo -lobjc" } */
+/* { dg-do run { target *-*-darwin* } } */
+
+
+#include <stdlib.h>
+#include <objc/Object.h>
+
+@interface Foo: Object {
+  char *cString;
+  unsigned int len;
+}
+@end
+
+struct objc_class _FooClassReference;
+
+@implementation Foo : Object
+- (char *)customString {
+  return cString;
+}
+@end
+
+static const Foo *appKey = @"MyApp";
+static int CFPreferencesSynchronize (const Foo *ref) {
+  return ref == appKey;
+}
+
+static void PrefsSynchronize(void)
+{
+  if(!CFPreferencesSynchronize(appKey))
+    abort();
+}
+
+int main () {
+  PrefsSynchronize();
+  return 0;
+}

gcc/testsuite/objc.dg/const-str-9.m

@@ -0,0 +1,20 @@
+/* Test if ObjC constant strings get placed in the correct section.  */
+/* Contributed by Ziemowit Laski <zlaski@apple.com>  */
+
+/* { dg-options "-fnext-runtime" } */
+/* { dg-do compile { target *-*-darwin* } } */
+
+#include <objc/Object.h>
+
+@interface NSConstantString: Object {
+  char *cString;
+  unsigned int len;
+}
+@end
+
+extern struct objc_class _NSConstantStringClassReference;
+
+static const NSConstantString *appKey = @"MyApp";
+
+/* { dg-final { scan-assembler ".section __OBJC, __cstring_object" } } */
+/* { dg-final { scan-assembler ".long\t__NSConstantStringClassReference\n\t.long\t.*\n\t.long\t5\n\t.data" } } */

gcc/varasm.c

@@ -3385,6 +3385,10 @@ output_addressed_constants (tree exp)
 	   tem = TREE_OPERAND (tem, 0))
 	;
 
+      /* If we have an initialized CONST_DECL, retrieve the initializer.  */
+      if (TREE_CODE (tem) == CONST_DECL && DECL_INITIAL (tem))
+	tem = DECL_INITIAL (tem);
+
       if (CONSTANT_CLASS_P (tem) || TREE_CODE (tem) == CONSTRUCTOR)
 	output_constant_def (tem, 0);
       break;