Undo rcs botch

From-SVN: r1370

gcc/c-lex.c

@@ -482,13 +482,7 @@ check_newline ()
 	      && ((c = getc (finput)) == ' ' || c == '\t' || c == '\n'))
 	    {
 #ifdef HANDLE_SYSV_PRAGMA
-	      c = handle_sysv_pragma (finput, c);
-	      if (c >= 0)
-		;
-	      else if (nextchar >= 0)
-		c = nextchar, nextchar = -1;
-	      else
-		c = getc (finput);
+	      return handle_sysv_pragma (finput, c);
 #endif /* HANDLE_SYSV_PRAGMA */
 #ifdef HANDLE_PRAGMA
 	      HANDLE_PRAGMA (finput);
@@ -741,9 +735,8 @@ linenum:
 #ifdef HANDLE_SYSV_PRAGMA
 
 /* Handle a #pragma directive.  INPUT is the current input stream,
-   and C is a character to reread.
-   Returns a character for the caller to reread,
-   or -1 meaning there isn't one.  */
+   and C is a character to reread.  Processes the entire input line
+   and returns a character for the caller to reread: either \n or EOF.  */
 
 /* This function has to be in this file, in order to get at
    the token types.  */
@@ -753,26 +746,32 @@ handle_sysv_pragma (input, c)
      FILE *input;
      int c;
 {
-  while (c == ' ' || c == '\t')
-    c = getc (input);
-  if (c == '\n' || c == EOF)
-    {
-      handle_pragma_token (0, 0);
-      return c;
-    }
-  ungetc (c, input);
-  switch (yylex ())
+  for (;;)
     {
-    case IDENTIFIER:
-    case TYPENAME:
-    case STRING:
-    case CONSTANT:
-      handle_pragma_token (token_buffer, yylval.ttype);
-      break;
-    default:
-      handle_pragma_token (token_buffer, 0);
+      while (c == ' ' || c == '\t')
+	c = getc (input);
+      if (c == '\n' || c == EOF)
+	{
+	  handle_pragma_token (0, 0);
+	  return c;
+	}
+      ungetc (c, input);
+      switch (yylex ())
+	{
+	case IDENTIFIER:
+	case TYPENAME:
+	case STRING:
+	case CONSTANT:
+	  handle_pragma_token (token_buffer, yylval.ttype);
+	  break;
+	default:
+	  handle_pragma_token (token_buffer, 0);
+	}
+      if (nextchar >= 0)
+	c = nextchar, nextchar = -1;
+      else
+	c = getc (input);
     }
-  return -1;
 }
 
 #endif /* HANDLE_SYSV_PRAGMA */

gcc/c-pragma.c

@@ -23,12 +23,20 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #ifdef HANDLE_SYSV_PRAGMA
 
+/* Support #pragma weak by default if WEAK_ASM_OP is defined.  */
+#if !defined (HANDLE_PRAGMA_WEAK) && defined (WEAK_ASM_OP)
+#define HANDLE_PRAGMA_WEAK 1
+#endif
+
 /* When structure field packing is in effect, this variable is the
    number of bits to use as the maximum alignment.  When packing is not
    in effect, this is zero. */
 
 extern int maximum_field_alignment;
 
+/* File used for outputting assembler code.  */
+extern FILE *asm_out_file;
+
 /* Handle one token of a pragma directive.  TOKEN is the
    current token, and STRING is its printable form.  */
 
@@ -64,27 +72,30 @@ handle_pragma_token (string, token)
 	  else
 	    warning ("malformed `#pragma pack'");
 	}
-#ifdef WEAK_ASM_OP
       else if (type == ps_weak)
 	{
-	  if (state == ps_name || state == ps_value)
+#ifdef HANDLE_PRAGMA_WEAK
+	  if (HANDLE_PRAGMA_WEAK)
 	    {
-	      fprintf (asm_out_file, "\t%s\t", WEAK_ASM_OP);
-	      ASM_OUTPUT_LABELREF (asm_out_file, name);
-	      fputc ('\n', asm_out_file);
-	      if (state == ps_value)
+	      if (state == ps_name || state == ps_value)
 		{
-		  fprintf (asm_out_file, "\t%s\t", SET_ASM_OP);
+		  fprintf (asm_out_file, "\t%s\t", WEAK_ASM_OP);
 		  ASM_OUTPUT_LABELREF (asm_out_file, name);
-		  fputc (',', asm_out_file);
-		  ASM_OUTPUT_LABELREF (asm_out_file, value);
 		  fputc ('\n', asm_out_file);
+		  if (state == ps_value)
+		    {
+		      fprintf (asm_out_file, "\t%s\t", SET_ASM_OP);
+		      ASM_OUTPUT_LABELREF (asm_out_file, name);
+		      fputc (',', asm_out_file);
+		      ASM_OUTPUT_LABELREF (asm_out_file, value);
+		      fputc ('\n', asm_out_file);
+		    }
 		}
+	      else if (! (state == ps_done || state == ps_start))
+		warning ("malformed `#pragma weak'");
 	    }
-	  else if (! (state == ps_done || state == ps_start))
-	    warning ("malformed `#pragma weak'");
+#endif /* HANDLE_PRAMA_WEAK */
 	}
-#endif /* WEAK_ASM_OP */
 
       type = state = ps_start;
       return;
@@ -97,10 +108,8 @@ handle_pragma_token (string, token)
 	{
 	  if (strcmp (IDENTIFIER_POINTER (token), "pack") == 0)
 	    type = state = ps_pack;
-#ifdef WEAK_ASM_OP
 	  else if (strcmp (IDENTIFIER_POINTER (token), "weak") == 0)
 	    type = state = ps_weak;
-#endif
 	  else
 	    type = state = ps_done;
 	}
@@ -108,7 +117,6 @@ handle_pragma_token (string, token)
 	type = state = ps_done;
       break;
 
-#ifdef WEAK_ASM_OP
     case ps_weak:
       if (token && TREE_CODE (token) == IDENTIFIER_NODE)
 	{
@@ -136,7 +144,6 @@ handle_pragma_token (string, token)
     case ps_value:
       state = ps_bad;
       break;
-#endif /* WEAK_ASM_OP */
 
     case ps_pack:
       if (strcmp (string, "(") == 0)