fortran/

[pf3gnuchains/gcc-fork.git] / gcc / c-opts.c

diff --git a/gcc/c-opts.c b/gcc/c-opts.c
index 5bc5f5d..b74ce77 100644 (file)
--- a/gcc/c-opts.c
+++ b/gcc/c-opts.c
@@ -225,9 +225,9 @@ c_common_init_options (unsigned int argc, const char **argv)
      before passing on command-line options to cpplib.  */
   cpp_opts->warn_dollars = 0;
 
-  flag_const_strings = c_dialect_cxx ();
   flag_exceptions = c_dialect_cxx ();
   warn_pointer_arith = c_dialect_cxx ();
+  warn_write_strings = c_dialect_cxx();
 
   deferred_opts = XNEWVEC (struct deferred_opt, argc);
 
@@ -268,6 +268,10 @@ c_common_handle_option (size_t scode, const char *arg, int value)
   enum opt_code code = (enum opt_code) scode;
   int result = 1;
 
+  /* Prevent resetting the language standard to a C dialect when the driver
+     has already determined that we're looking at assembler input.  */
+  bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
+ 
   switch (code)
     {
     default:
@@ -417,6 +421,9 @@ c_common_handle_option (size_t scode, const char *arg, int value)
       cpp_opts->warn_comments = value;
       cpp_opts->warn_num_sign_change = value;
       cpp_opts->warn_multichar = value;        /* Was C++ only.  */
+
+      if (warn_pointer_sign == -1)
+       warn_pointer_sign = 1;
       break;
 
     case OPT_Wcomment:
@@ -428,10 +435,6 @@ c_common_handle_option (size_t scode, const char *arg, int value)
       cpp_opts->warn_deprecated = value;
       break;
 
-    case OPT_Wdiv_by_zero:
-      warn_div_by_zero = value;
-      break;
-
     case OPT_Wendif_labels:
       cpp_opts->warn_endif_labels = value;
       break;
@@ -532,10 +535,7 @@ c_common_handle_option (size_t scode, const char *arg, int value)
       break;
 
     case OPT_Wwrite_strings:
-      if (!c_dialect_cxx ())
-       flag_const_strings = value;
-      else
-       warn_write_strings = value;
+      warn_write_strings = value;
       break;
 
     case OPT_Weffc__:
@@ -653,10 +653,6 @@ c_common_handle_option (size_t scode, const char *arg, int value)
       flag_conserve_space = value;
       break;
 
-    case OPT_fconst_strings:
-      flag_const_strings = value;
-      break;
-
     case OPT_fconstant_string_class_:
       constant_string_class_name = arg;
       break;
@@ -749,7 +745,7 @@ c_common_handle_option (size_t scode, const char *arg, int value)
     case OPT_freplace_objc_classes:
       flag_replace_objc_classes = value;
       break;
-      
+
     case OPT_frepo:
       flag_use_repository = value;
       if (value)
@@ -794,6 +790,10 @@ c_common_handle_option (size_t scode, const char *arg, int value)
       flag_use_cxa_atexit = value;
       break;
       
+    case OPT_fuse_cxa_get_exception_ptr:
+      flag_use_cxa_get_exception_ptr = value;
+      break;
+
     case OPT_fvisibility_inlines_hidden:
       visibility_options.inlines_hidden = value;
       break;
@@ -888,6 +888,10 @@ c_common_handle_option (size_t scode, const char *arg, int value)
     case OPT_pedantic:
       cpp_opts->pedantic = 1;
       cpp_opts->warn_endif_labels = 1;
+      if (warn_pointer_sign == -1)
+       warn_pointer_sign = 1;
+      if (warn_overlength_strings == -1)
+       warn_overlength_strings = 1;
       break;
 
     case OPT_print_objc_runtime_info:
@@ -905,29 +909,34 @@ c_common_handle_option (size_t scode, const char *arg, int value)
 
     case OPT_std_c__98:
     case OPT_std_gnu__98:
-      set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
+      if (!preprocessing_asm_p)
+       set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
       break;
 
     case OPT_std_c89:
     case OPT_std_iso9899_1990:
     case OPT_std_iso9899_199409:
-      set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
+      if (!preprocessing_asm_p)
+       set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
       break;
 
     case OPT_std_gnu89:
-      set_std_c89 (false /* c94 */, false /* ISO */);
+      if (!preprocessing_asm_p)
+       set_std_c89 (false /* c94 */, false /* ISO */);
       break;
 
     case OPT_std_c99:
     case OPT_std_c9x:
     case OPT_std_iso9899_1999:
     case OPT_std_iso9899_199x:
-      set_std_c99 (true /* ISO */);
+      if (!preprocessing_asm_p)
+       set_std_c99 (true /* ISO */);
       break;
 
     case OPT_std_gnu99:
     case OPT_std_gnu9x:
-      set_std_c99 (false /* ISO */);
+      if (!preprocessing_asm_p)
+       set_std_c99 (false /* ISO */);
       break;
 
     case OPT_trigraphs:
@@ -982,6 +991,12 @@ c_common_post_options (const char **pfilename)
   register_include_chains (parse_in, sysroot, iprefix, imultilib,
                           std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
 
+#ifdef C_COMMON_OVERRIDE_OPTIONS
+  /* Some machines may reject certain combinations of C
+     language-specific options.  */
+  C_COMMON_OVERRIDE_OPTIONS;
+#endif
+
   flag_inline_trees = 1;
 
   /* Use tree inlining.  */
@@ -1001,12 +1016,25 @@ c_common_post_options (const char **pfilename)
   if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
     flag_exceptions = 1;
 
-  /* -Wextra implies -Wsign-compare and -Wmissing-field-initializers,
-     but not if explicitly overridden.  */
+  /* -Wextra implies -Wsign-compare, -Wmissing-field-initializers and
+     -Woverride-init, but not if explicitly overridden.  */
   if (warn_sign_compare == -1)
     warn_sign_compare = extra_warnings;
   if (warn_missing_field_initializers == -1)
     warn_missing_field_initializers = extra_warnings;
+  if (warn_override_init == -1)
+    warn_override_init = extra_warnings;
+
+  /* -Wpointer_sign is disabled by default, but it is enabled if any
+     of -Wall or -pedantic are given.  */
+  if (warn_pointer_sign == -1)
+    warn_pointer_sign = 0;
+
+  /* -Woverlength-strings is off by default, but is enabled by -pedantic.
+     It is never enabled in C++, as the minimum limit is not normative
+     in that standard.  */
+  if (warn_overlength_strings == -1 || c_dialect_cxx ())
+    warn_overlength_strings = 0;
 
   /* Special format checking options don't work without -Wformat; warn if
      they are used.  */
@@ -1156,7 +1184,7 @@ c_common_parse_file (int set_yydebug)
       this_input_filename
        = cpp_read_main_file (parse_in, in_fnames[i]);
       /* If an input file is missing, abandon further compilation.
-         cpplib has issued a diagnostic.  */
+        cpplib has issued a diagnostic.  */
       if (!this_input_filename)
        break;
     }
@@ -1356,7 +1384,10 @@ finish_options (void)
         their acceptance on the -std= setting.  */
       cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99);
 
-      cpp_change_file (parse_in, LC_RENAME, _("<command line>"));
+      cb_file_change (parse_in,
+                     linemap_add (&line_table, LC_RENAME, 0,
+                                  _("<command-line>"), 0));
+
       for (i = 0; i < deferred_count; i++)
        {
          struct deferred_opt *opt = &deferred_opts[i];