+2004-01-23 Zack Weinberg <zack@codesourcery.com>
+
+ PR 18314
+ * c-decl.c (diagnose_mismatched_decls): Also discard a
+ built-in if we encounter an old-style definition with the
+ same name.
+
2004-01-23 Jakub Jelinek <jakub@redhat.com>
* config.gcc (powerpc*-*): Clear $with_cpu or $with_tune if it was
[!__powerpc64__]: Corrected to handle kernels with changed ucontext.
2004-01-23 Eric Botcazou <ebotcazou@act-europe.fr>
- Olivier Hainque <hainque@act-europe.fr>
+ Olivier Hainque <hainque@act-europe.fr>
* fold-const.c (fold_binary_op_with_conditional_arg): Only
build a COMPOUND_EXPR if 'arg' is really a SAVE_EXPR.
2004-01-23 Alexandre Oliva <aoliva@redhat.com>
PR optimization/13819
- * config/sh/sh.c (sh_reorg): Compensate for sharing of CLOBBERs
+ * config/sh/sh.c (sh_reorg): Compensate for sharing of CLOBBERs
introduced by 2004-01-20's Jan Hubicka's copy_insn change.
(sh_handle_sp_switch_attribute): Remove warning.
2004-01-22 Daniel Jacobowitz <drow@mvista.com>
* config/arm/arm.c: Include "debug.h".
- (thumb_pushpop): Take two new arguments. Add some commentary.
+ (thumb_pushpop): Take two new arguments. Add some commentary.
Output frame information when pushing.
(thumb_exit, thumb_unexpanded_epilogue): Update calls to
thumb_pushpop.
2004-01-21 Andrew Pinski <apinski@apple.com>
PR target/13785
- * config/rs6000/rs6000.md (call_value): Force operand
+ * config/rs6000/rs6000.md (call_value): Force operand
1 not operand 0 into a register.
2004-01-21 Kazu Hirata <kazu@cs.umass.edu>
2004-01-21 Caroline Tice <ctice@apple.com>
PR target/12308
- * config/i386/i386.md (fix_truncxfdi2): Add clause to clobber
+ * config/i386/i386.md (fix_truncxfdi2): Add clause to clobber
flags register.
(fix_truncdfdi2): Likewise.
(fix_truncsfdi2): Likewise.
(fix_truncdfhi2): Likewise.
(fix_truncsfhi2): Likewise.
(*fix_trunchi_1): Likewise.
-
+
2004-01-21 Kazu Hirata <kazu@cs.umass.edu>
* alias.c, basic-block.h, c-common.c, c-common.h,
extern-inline definition supersedes the extern-inline definition. */
else if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
- if (DECL_BUILT_IN (olddecl) && !TREE_PUBLIC (newdecl))
+ /* If you declare a built-in function name as static, or
+ define the built-in with an old-style definition (so we
+ can't validate the argument list) the built-in definition is
+ overridden, but optionally warn this was a bad choice of name. */
+ if (DECL_BUILT_IN (olddecl)
+ && (!TREE_PUBLIC (newdecl)
+ || (DECL_INITIAL (newdecl)
+ && !TYPE_ARG_TYPES (TREE_TYPE (newdecl)))))
{
- /* If you declare a built-in function name as static, the
- built-in definition is overridden,
- but optionally warn this was a bad choice of name. */
if (warn_shadow)
warning ("%Jshadowing built-in function '%D'", newdecl, newdecl);
/* Discard the old built-in function. */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-Wall -Wshadow" } */
+
+extern double strtod (const char *, char **);
+#define UNUSED __attribute__ ((unused))
+
+/* A built-in function may be overridden by an old-style definition
+ specifying too few arguments... */
+double nan ()
+{
+ return strtod ("nan", 0); /* { dg-warning "shadowing built-in" } */
+}
+
+/* the right number, but the wrong type, arguments... */
+float nanf (foo)
+ int foo UNUSED;
+{
+ return strtod ("nan", 0); /* { dg-warning "shadowing built-in" } */
+}
+
+/* or too many arguments. */
+long double nanl (foo, bar)
+ const char *foo UNUSED;
+ int bar UNUSED;
+{
+ return strtod ("nan", 0); /* { dg-warning "shadowing built-in" } */
+}