re PR c/5059 (Compiling s/w containing the use of DIR.H fails on other stat-calls)

	* config/alpha/osf.h (TARGET_OS_CPP_BUILTINS): Rename
	__EXTERN_PREFIX to __PRAGMA_EXTERN_PREFIX.
	* doc/extend.texi (Tru64 Pragmas): Reflect this.

	* fixinc/inclhack.def (alpha___extern_prefix): Indicate #pragma
	extern_prefix support for Tru64 UNIX V5 <sys/stat.h>.
	* fixinc/fixincl.x: Regenerate.
	* fixinc/tests/base/sys/stat.h [ALPHA___EXTERN_PREFIX_CHECK]: New
	testcase.
	Fixes PR c/5059, c/6126, other/9671.

	testsuite:
	* g++.dg/other/pragma-ep-1.C: Test for __PRAGMA_EXTERN_PREFIX.
	* gcc.dg/pragma-ep-1.c: Likewise.

From-SVN: r63370

gcc/ChangeLog

+2003-02-24  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* config/alpha/osf.h (TARGET_OS_CPP_BUILTINS): Rename
+	__EXTERN_PREFIX to __PRAGMA_EXTERN_PREFIX.
+	* doc/extend.texi (Tru64 Pragmas): Reflect this.
+
+	* fixinc/inclhack.def (alpha___extern_prefix): Indicate #pragma
+	extern_prefix support for Tru64 UNIX V5 <sys/stat.h>. 
+	* fixinc/fixincl.x: Regenerate.
+	* fixinc/tests/base/sys/stat.h [ALPHA___EXTERN_PREFIX_CHECK]: New
+	testcase.
+	Fixes PR c/5059, c/6126, other/9671.
+	
 2003-02-24  Roger Sayle  <roger@eyesopen.com>
 
 	* gcc.c (do_spec_1) ['{']:  Handle pending argument upon return

gcc/config/alpha/osf.h

 /* Definitions of target machine for GNU compiler, for DEC Alpha on OSF/1.
-   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2001
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2001, 2002, 2003
    Free Software Foundation, Inc.
    Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
 
@@ -32,21 +32,21 @@ Boston, MA 02111-1307, USA.  */
 
 /* Names to predefine in the preprocessor for this target machine.  */
 
-#define TARGET_OS_CPP_BUILTINS()		\
-    do {					\
-	builtin_define_std ("unix");		\
-	builtin_define_std ("SYSTYPE_BSD");	\
-	builtin_define ("_SYSTYPE_BSD");	\
-	builtin_define ("__osf__");		\
-	builtin_define ("_LONGLONG");		\
-	builtin_define ("__EXTERN_PREFIX");	\
-	builtin_assert ("system=unix");		\
-	builtin_assert ("system=xpg4");		\
-	/* Tru64 UNIX V5 has a 16 byte long	\
-	   double type and requires __X_FLOAT	\
-	   to be defined for <math.h>.  */	\
-        if (LONG_DOUBLE_TYPE_SIZE == 128)	\
-          builtin_define ("__X_FLOAT");		\
+#define TARGET_OS_CPP_BUILTINS()			\
+    do {						\
+	builtin_define_std ("unix");			\
+	builtin_define_std ("SYSTYPE_BSD");		\
+	builtin_define ("_SYSTYPE_BSD");		\
+	builtin_define ("__osf__");			\
+	builtin_define ("_LONGLONG");			\
+	builtin_define ("__PRAGMA_EXTERN_PREFIX");	\
+	builtin_assert ("system=unix");			\
+	builtin_assert ("system=xpg4");			\
+	/* Tru64 UNIX V5 has a 16 byte long		\
+	   double type and requires __X_FLOAT		\
+	   to be defined for <math.h>.  */		\
+        if (LONG_DOUBLE_TYPE_SIZE == 128)		\
+          builtin_define ("__X_FLOAT");			\
     } while (0)
 
 /* Accept DEC C flags for multithreaded programs.  We use _PTHREAD_USE_D4

gcc/doc/extend.texi

@@ -6588,7 +6588,8 @@ empty string.
 This pragma is similar in intent to to the asm labels extension
 (@pxref{Asm Labels}) in that the system programmer wants to change
 the assembly-level ABI without changing the source-level API.  The
-preprocessor defines @code{__EXTERN_PREFIX} if the pragma is available.
+preprocessor defines @code{__PRAGMA_EXTERN_PREFIX} if the pragma is
+available.
 @end table
 
 @node Unnamed Fields

gcc/fixinc/fixincl.x

@@ -711,6 +711,43 @@ static const char* apzAlpha___AssertPatch[] = {
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * *
  *
+ *  Description of Alpha___Extern_Prefix fix
+ */
+tSCC zAlpha___Extern_PrefixName[] =
+     "alpha___extern_prefix";
+
+/*
+ *  File name selection pattern
+ */
+tSCC zAlpha___Extern_PrefixList[] =
+  "|sys/stat.h|";
+/*
+ *  Machine/OS name selection pattern
+ */
+tSCC* apzAlpha___Extern_PrefixMachs[] = {
+        "alpha*-dec-osf5*",
+        (const char*)NULL };
+
+/*
+ *  content selection pattern - do fix if pattern found
+ */
+tSCC zAlpha___Extern_PrefixSelect0[] =
+       "#[ \t]*if[ \t]*defined\\(__DECC\\)";
+
+#define    ALPHA___EXTERN_PREFIX_TEST_CT  1
+static tTestDesc aAlpha___Extern_PrefixTests[] = {
+  { TT_EGREP,    zAlpha___Extern_PrefixSelect0, (regex_t*)NULL }, };
+
+/*
+ *  Fix Command Arguments for Alpha___Extern_Prefix
+ */
+static const char* apzAlpha___Extern_PrefixPatch[] = {
+    "format",
+    "%0 || defined(__PRAGMA_EXTERN_PREFIX)",
+    (char*)NULL };
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ *
  *  Description of Alpha_Assert fix
  */
 tSCC zAlpha_AssertName[] =
@@ -5788,6 +5825,7 @@ typedef enum {
     AIX_SYSWAIT_FIXIDX,
     AIX_VOLATILE_FIXIDX,
     ALPHA___ASSERT_FIXIDX,
+    ALPHA___EXTERN_PREFIX_FIXIDX,
     ALPHA_ASSERT_FIXIDX,
     ALPHA_GETOPT_FIXIDX,
     ALPHA_PARENS_FIXIDX,
@@ -5993,6 +6031,11 @@ tFixDesc fixDescList[ FIX_COUNT ] = {
      ALPHA___ASSERT_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
      aAlpha___AssertTests,   apzAlpha___AssertPatch, 0 },
 
+  {  zAlpha___Extern_PrefixName,    zAlpha___Extern_PrefixList,
+     apzAlpha___Extern_PrefixMachs,
+     ALPHA___EXTERN_PREFIX_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
+     aAlpha___Extern_PrefixTests,   apzAlpha___Extern_PrefixPatch, 0 },
+
   {  zAlpha_AssertName,    zAlpha_AssertList,
      apzAlpha_AssertMachs,
      ALPHA_ASSERT_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,

gcc/fixinc/inclhack.def

@@ -523,6 +523,22 @@ fix = {
 
 
 /*
+ *  Obey __PRAGMA_EXTERN_PREFIX for Tru64 UNIX V5 <sys/stat.h>.
+ */
+fix = {
+    hackname  = alpha___extern_prefix;
+    files     = sys/stat.h;
+    select    = "#[ \t]*if[ \t]*defined\\(__DECC\\)";
+
+    mach      = "alpha*-dec-osf5*";
+    c_fix     = format;
+    c_fix_arg = "%0 || defined(__PRAGMA_EXTERN_PREFIX)";
+
+    test_text = "#   if defined(__DECC)";
+};
+
+
+/*
  *  Fix assert macro in assert.h on Alpha OSF/1.
  *  The superfluous int cast breaks C++.
  */

gcc/testsuite/ChangeLog

+2003-02-24  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* g++.dg/other/pragma-ep-1.C: Test for __PRAGMA_EXTERN_PREFIX.
+	* gcc.dg/pragma-ep-1.c: Likewise.
+
 2003-02-24  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
 	PR c++/9602

gcc/testsuite/g++.dg/other/pragma-ep-1.C

@@ -5,7 +5,7 @@
 /* { dg-final { scan-assembler "four" } } */
 /* { dg-final { scan-assembler-not "_four" } } */
 
-#ifndef __EXTERN_PREFIX
+#ifndef __PRAGMA_EXTERN_PREFIX
 #error
 #endif
 

gcc/testsuite/gcc.dg/pragma-ep-1.c

@@ -5,7 +5,7 @@
 /* { dg-final { scan-assembler "four" } } */
 /* { dg-final { scan-assembler-not "_four" } } */
 
-#ifndef __EXTERN_PREFIX
+#ifndef __PRAGMA_EXTERN_PREFIX
 #error
 #endif