if (TREE_VALUE (t) == NULL)
continue;
- decl = build_decl (FUNCTION_DECL, alias_id, default_function_type);
+ decl = build_decl (UNKNOWN_LOCATION,
+ FUNCTION_DECL, alias_id, default_function_type);
DECL_ARTIFICIAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
if (t != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of %<#pragma redefine_extname%>");
- if (!flag_mudflap && !targetm.handle_pragma_redefine_extname)
- {
- if (warn_unknown_pragmas > in_system_header)
- warning (OPT_Wunknown_pragmas,
- "#pragma redefine_extname not supported on this target");
- return;
- }
-
decl = identifier_global_value (oldname);
if (decl
&& (TREE_PUBLIC (decl) || DECL_EXTERNAL (decl))
inform (input_location, "#pragma message: %s", TREE_STRING_POINTER (message));
}
+/* Mark whether the current location is valid for a STDC pragma. */
+
+static bool valid_location_for_stdc_pragma;
+
+void
+mark_valid_location_for_stdc_pragma (bool flag)
+{
+ valid_location_for_stdc_pragma = flag;
+}
+
+/* Return true if the current location is valid for a STDC pragma. */
+
+bool
+valid_location_for_stdc_pragma_p (void)
+{
+ return valid_location_for_stdc_pragma;
+}
+
+enum pragma_switch_t { PRAGMA_ON, PRAGMA_OFF, PRAGMA_DEFAULT, PRAGMA_BAD };
+
+/* A STDC pragma must appear outside of external declarations or
+ preceding all explicit declarations and statements inside a compound
+ statement; its behavior is undefined if used in any other context.
+ It takes a switch of ON, OFF, or DEFAULT. */
+
+static enum pragma_switch_t
+handle_stdc_pragma (const char *pname)
+{
+ const char *arg;
+ tree t;
+ enum pragma_switch_t ret;
+
+ if (!valid_location_for_stdc_pragma_p ())
+ {
+ warning (OPT_Wpragmas, "invalid location for %<pragma %s%>, ignored",
+ pname);
+ return PRAGMA_BAD;
+ }
+
+ if (pragma_lex (&t) != CPP_NAME)
+ {
+ warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname);
+ return PRAGMA_BAD;
+ }
+
+ arg = IDENTIFIER_POINTER (t);
+
+ if (!strcmp (arg, "ON"))
+ ret = PRAGMA_ON;
+ else if (!strcmp (arg, "OFF"))
+ ret = PRAGMA_OFF;
+ else if (!strcmp (arg, "DEFAULT"))
+ ret = PRAGMA_DEFAULT;
+ else
+ {
+ warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname);
+ return PRAGMA_BAD;
+ }
+
+ if (pragma_lex (&t) != CPP_EOF)
+ {
+ warning (OPT_Wpragmas, "junk at end of %<#pragma %s%>", pname);
+ return PRAGMA_BAD;
+ }
+
+ return ret;
+}
+
+/* #pragma STDC FLOAT_CONST_DECIMAL64 ON
+ #pragma STDC FLOAT_CONST_DECIMAL64 OFF
+ #pragma STDC FLOAT_CONST_DECIMAL64 DEFAULT */
+
+static void
+handle_pragma_float_const_decimal64 (cpp_reader *ARG_UNUSED (dummy))
+{
+ if (c_dialect_cxx ())
+ {
+ if (warn_unknown_pragmas > in_system_header)
+ warning (OPT_Wunknown_pragmas,
+ "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported"
+ " for C++");
+ return;
+ }
+
+ if (!targetm.decimal_float_supported_p ())
+ {
+ if (warn_unknown_pragmas > in_system_header)
+ warning (OPT_Wunknown_pragmas,
+ "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported"
+ " on this target");
+ return;
+ }
+
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C does not support %<#pragma STDC FLOAT_CONST_DECIMAL64%>");
+
+ switch (handle_stdc_pragma ("STDC FLOAT_CONST_DECIMAL64"))
+ {
+ case PRAGMA_ON:
+ set_float_const_decimal64 ();
+ break;
+ case PRAGMA_OFF:
+ case PRAGMA_DEFAULT:
+ clear_float_const_decimal64 ();
+ break;
+ case PRAGMA_BAD:
+ break;
+ }
+}
+
/* A vector of registered pragma callbacks. */
DEF_VEC_O (pragma_handler);
c_register_pragma ("GCC", "pop_options", handle_pragma_pop_options);
c_register_pragma ("GCC", "reset_options", handle_pragma_reset_options);
+ c_register_pragma ("STDC", "FLOAT_CONST_DECIMAL64",
+ handle_pragma_float_const_decimal64);
+
c_register_pragma_with_expansion (0, "redefine_extname", handle_pragma_redefine_extname);
c_register_pragma (0, "extern_prefix", handle_pragma_extern_prefix);