re PR fortran/37821 (gfortran is ignoring #includes with the syntax <file.h>)

2008-11-03  Tobias Burnus  <burnus@net-b.de>

        PR fortran/37821
        * cpp.c (gfc_cpp_add_include_path): Use BRACKET.
        * scanner.c (add_path_to_list): Argument to add at head.
          (gfc_add_include_path): Add new argument.
          (gfc_add_intrinsic_modules_path) Update call.
          (load_file): Print filename/line in the error message.
        * gfortran.h (gfc_add_include_path): Update prototype.
        * options.c (gfc_post_options,gfc_handle_module_path_options,
          gfc_handle_option): Update call.
        * lang-spec.h (F951_OPTIONS): Don't insert include path twice.

        * arith.c (arith_error): Add -fno-range-error to the message.

2008-11-03  Tobias Burnus  <burnus@net-b.de>

        PR fortran/37821
        * gfortran.dg/include_4.f90: New.
        * gfortran.dg/include_5.f90: New.
        * gfortran.dg/include_4.inc: New.

From-SVN: r141544

gcc/fortran/ChangeLog

+2008-11-03  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/37821
+	* cpp.c (gfc_cpp_add_include_path): Use BRACKET.
+	* scanner.c (add_path_to_list): Argument to add at head.
+	(gfc_add_include_path): Add new argument.
+	(gfc_add_intrinsic_modules_path) Update call.
+	(load_file): Print filename/line in the error message.
+	* gfortran.h (gfc_add_include_path): Update prototype.
+	* options.c (gfc_post_options,gfc_handle_module_path_options,
+	gfc_handle_option): Update call.
+	* lang-spec.h (F951_OPTIONS): Don't insert include path twice.
+
+	* arith.c (arith_error): Add -fno-range-error to the message.
+
 2008-11-03  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/37445

gcc/fortran/arith.c

@@ -2065,11 +2065,13 @@ arith_error (arith rc, gfc_typespec *from, gfc_typespec *to, locus *where)
 		 gfc_typename (from), gfc_typename (to), where);
       break;
     case ARITH_UNDERFLOW:
-      gfc_error ("Arithmetic underflow converting %s to %s at %L",
+      gfc_error ("Arithmetic underflow converting %s to %s at %L. This check "
+		 "can be disabled with the option -fno-range-check",
 		 gfc_typename (from), gfc_typename (to), where);
       break;
     case ARITH_NAN:
-      gfc_error ("Arithmetic NaN converting %s to %s at %L",
+      gfc_error ("Arithmetic NaN converting %s to %s at %L. This check "
+		 "can be disabled with the option -fno-range-check",
 		 gfc_typename (from), gfc_typename (to), where);
       break;
     case ARITH_DIV0:

gcc/fortran/cpp.c

@@ -628,10 +628,9 @@ gfc_cpp_add_include_path (char *path, bool user_supplied)
 {
   /* CHAIN sets cpp_dir->sysp which differs from 0 if PATH is a system
      include path. Fortran does not define any system include paths.  */
-  int chain = 0;
   int cxx_aware = 0;
 
-  add_path (path, chain, cxx_aware, user_supplied);
+  add_path (path, BRACKET, cxx_aware, user_supplied);
 }
 
 void

gcc/fortran/gfortran.h

@@ -2093,7 +2093,7 @@ bool gfc_in_match_data (void);
 void gfc_scanner_done_1 (void);
 void gfc_scanner_init_1 (void);
 
-void gfc_add_include_path (const char *, bool);
+void gfc_add_include_path (const char *, bool, bool);
 void gfc_add_intrinsic_modules_path (const char *);
 void gfc_release_include_path (void);
 FILE *gfc_open_included_file (const char *, bool, bool);

gcc/fortran/lang-specs.h

@@ -23,7 +23,7 @@
 
 #define F951_CPP_OPTIONS "%{!nocpp: -cpp %g.f90 %(cpp_options)\
                           %{E|M|MM:%(cpp_debug_options) -fsyntax-only} %{E}}"
-#define F951_OPTIONS     "%(cc1_options) %{J*} %{I*}\
+#define F951_OPTIONS     "%(cc1_options) %{J*} %{!cpp: %{I*}}\
                           %{!nostdinc:-fintrinsic-modules-path finclude%s}\
                           %{!fsyntax-only:%(invoke_as)}"
 #define F951_SOURCE_FORM  "%{!ffree-form:-ffixed-form}"

gcc/fortran/options.c

@@ -265,10 +265,10 @@ gfc_post_options (const char **pfilename)
       source_path = (char *) alloca (i + 1);
       memcpy (source_path, canon_source_file, i);
       source_path[i] = 0;
-      gfc_add_include_path (source_path, true);
+      gfc_add_include_path (source_path, true, true);
     }
   else
-    gfc_add_include_path (".", true);
+    gfc_add_include_path (".", true, true);
 
   if (canon_source_file != gfc_source_file)
     gfc_free (CONST_CAST (char *, canon_source_file));
@@ -407,7 +407,7 @@ gfc_handle_module_path_options (const char *arg)
   strcpy (gfc_option.module_dir, arg);
   strcat (gfc_option.module_dir, "/");
 
-  gfc_add_include_path (gfc_option.module_dir, true);
+  gfc_add_include_path (gfc_option.module_dir, true, false);
 }
 
 
@@ -639,7 +639,7 @@ gfc_handle_option (size_t scode, const char *arg, int value)
       break;
 
     case OPT_fintrinsic_modules_path:
-      gfc_add_include_path (arg, false);
+      gfc_add_include_path (arg, false, false);
       gfc_add_intrinsic_modules_path (arg);
       break;
 
@@ -744,7 +744,7 @@ gfc_handle_option (size_t scode, const char *arg, int value)
       break;
 
     case OPT_I:
-      gfc_add_include_path (arg, true);
+      gfc_add_include_path (arg, true, false);
       break;
 
     case OPT_J:

gcc/fortran/scanner.c

@@ -307,7 +307,7 @@ gfc_scanner_done_1 (void)
 
 static void
 add_path_to_list (gfc_directorylist **list, const char *path,
-		  bool use_for_modules)
+		  bool use_for_modules, bool head)
 {
   gfc_directorylist *dir;
   const char *p;
@@ -317,11 +317,15 @@ add_path_to_list (gfc_directorylist **list, const char *path,
     if (*p++ == '\0')
       return;
 
-  dir = *list;
-  if (!dir)
-    dir = *list = XCNEW (gfc_directorylist);
+  if (head || *list == NULL)
+    {
+      dir = XCNEW (gfc_directorylist);
+      if (!head)
+        *list = dir;
+    }
   else
     {
+      dir = *list;
       while (dir->next)
 	dir = dir->next;
 
@@ -329,7 +333,9 @@ add_path_to_list (gfc_directorylist **list, const char *path,
       dir = dir->next;
     }
 
-  dir->next = NULL;
+  dir->next = head ? *list : NULL;
+  if (head)
+    *list = dir;
   dir->use_for_modules = use_for_modules;
   dir->path = XCNEWVEC (char, strlen (p) + 2);
   strcpy (dir->path, p);
@@ -338,17 +344,20 @@ add_path_to_list (gfc_directorylist **list, const char *path,
 
 
 void
-gfc_add_include_path (const char *path, bool use_for_modules)
+gfc_add_include_path (const char *path, bool use_for_modules, bool file_dir)
 {
-  add_path_to_list (&include_dirs, path, use_for_modules);
-  gfc_cpp_add_include_path (xstrdup(path), true);
+  add_path_to_list (&include_dirs, path, use_for_modules, file_dir);
+
+  /* For '#include "..."' these directories are automatically searched.  */
+  if (!file_dir)
+    gfc_cpp_add_include_path (xstrdup(path), true);
 }
 
 
 void
 gfc_add_intrinsic_modules_path (const char *path)
 {
-  add_path_to_list (&intrinsic_modules_dirs, path, true);
+  add_path_to_list (&intrinsic_modules_dirs, path, true, false);
 }
 
 
@@ -1767,7 +1776,9 @@ load_file (const char *realfilename, const char *displayedname, bool initial)
   for (f = current_file; f; f = f->up)
     if (strcmp (filename, f->filename) == 0)
       {
-	gfc_error_now ("File '%s' is being included recursively", filename);
+	fprintf (stderr, "%s:%d: Error: File '%s' is being included "
+		 "recursively\n", current_file->filename, current_file->line,
+		 filename);
 	return FAILURE;
       }
 
@@ -1791,7 +1802,8 @@ load_file (const char *realfilename, const char *displayedname, bool initial)
       input = gfc_open_included_file (realfilename, false, false);
       if (input == NULL)
 	{
-	  gfc_error_now ("Can't open included file '%s'", filename);
+	  fprintf (stderr, "%s:%d: Error: Can't open included file '%s'\n",
+		   current_file->filename, current_file->line, filename);
 	  return FAILURE;
 	}
     }

gcc/testsuite/ChangeLog

+2008-11-03  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/37821
+	* gfortran.dg/include_4.f90: New.
+	* gfortran.dg/include_5.f90: New.
+	* gfortran.dg/include_4.inc: New.
+
 2008-11-03  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/37445

gcc/testsuite/gfortran.dg/include_4.f90

+! { dg-do compile }
+!
+! PR fortran/37821
+!
+! Ensure that for #include "..." and for include the
+! current directory/directory of the source file is
+! included. See also include_5.f90
+
+subroutine one()
+  include "include_4.inc"
+  integer(i4) :: i
+end subroutine one

gcc/testsuite/gfortran.dg/include_4.inc

+! Used by include_4.f90 and include_5.f90
+! PR fortran/37821
+!
+integer, parameter :: i4 = 4

gcc/testsuite/gfortran.dg/include_5.f90

+! { dg-do compile }
+! { dg-options "-cpp" }
+!
+! PR fortran/37821
+!
+! Ensure that for #include "..." and for include the
+! current directory/directory of the source file is
+! included.
+
+subroutine one()
+  include "include_4.inc"
+  integer(i4) :: i
+end subroutine one
+
+subroutine two()
+# include "include_4.inc"
+  integer(i4) :: i
+end subroutine two