[PATCH] aliasing warning in ctype.h

[Ian Wienand]

Hello,

The attached patch removes warning like :

../include/ctype.h:38: warning: dereferencing type-punned pointer will
break strict-aliasing rules

from ctype.h

2003-03-21  Ian Wienand  <ianw@gelato.unsw.edu.au>
 
        * include/ctype.h : don't cast results of __libc_tsd_address
	to avoid pointer aliasing warning.


-i 
ianw@gelato.unsw.edu.au
http://www.gelato.unsw.edu.au


-------------- next part --------------
--- include/ctype.h.orig	2003-03-21 10:28:48.000000000 +1100
+++ include/ctype.h	2003-03-21 10:27:40.000000000 +1100
@@ -25,31 +25,28 @@
 CTYPE_EXTERN_INLINE const uint16_t ** __attribute__ ((const))
 __ctype_b_loc (void)
 {
-  const uint16_t **tablep =
-    (const uint16_t **) __libc_tsd_address (CTYPE_B);
+  void **tablep = __libc_tsd_address (CTYPE_B); 
   if (__builtin_expect (*tablep == NULL, 0))
-    *tablep = (const uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128;
-  return tablep;
+    *tablep = ((void *)(_NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128)); 
+  return ((const uint16_t **)tablep);
 }
 
 CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
 __ctype_toupper_loc (void)
 {
-  const int32_t **tablep =
-    (const int32_t **) __libc_tsd_address (CTYPE_TOUPPER);
+  void **tablep = __libc_tsd_address (CTYPE_TOUPPER);
   if (__builtin_expect (*tablep == NULL, 0))
-    *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128);
-  return tablep;
+    *tablep = ((void *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128);
+  return ((const int32_t **)tablep);
 }
 
 CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
 __ctype_tolower_loc (void)
 {
-  const int32_t **tablep =
-    (const int32_t **) __libc_tsd_address (CTYPE_TOLOWER);
+  void **tablep = __libc_tsd_address (CTYPE_TOLOWER);
   if (__builtin_expect (*tablep == NULL, 0))
-    *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128);
-  return tablep;
+    *tablep = ((void *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128);
+  return ((const int32_t **)tablep);
 }
 
 # endif	/* Not NOT_IN_libc.  */