2006-01-06 Richard Guenther <rguenther@suse.de>

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

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index 53e20d7..bda8789 100644 (file)
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -1,6 +1,7 @@
 /* Build expressions with type checking for C compiler.
    Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006  
+   Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -934,7 +935,7 @@ same_translation_unit_p (tree t1, tree t2)
 static struct tagged_tu_seen_cache *
 alloc_tagged_tu_seen_cache (tree t1, tree t2)
 {
-  struct tagged_tu_seen_cache *tu = xmalloc (sizeof (struct tagged_tu_seen_cache));
+  struct tagged_tu_seen_cache *tu = XNEW (struct tagged_tu_seen_cache);
   tu->next = tagged_tu_seen_base;
   tu->t1 = t1;
   tu->t2 = t2;
@@ -3508,8 +3509,12 @@ build_c_cast (tree type, tree expr)
 
       if (TREE_CODE (type) == INTEGER_TYPE
          && TREE_CODE (otype) == POINTER_TYPE
-         && TYPE_PRECISION (type) != TYPE_PRECISION (otype)
-         && !TREE_CONSTANT (value))
+         && TYPE_PRECISION (type) != TYPE_PRECISION (otype))
+      /* Unlike conversion of integers to pointers, where the 
+         warning is disabled for converting constants because 
+         of cases such as SIG_*, warn about converting constant 
+         pointers to integers. In some cases it may cause unwanted 
+         sign extension, and a warning is appropriate.  */
        warning (OPT_Wpointer_to_int_cast,
                 "cast from pointer to integer of different size");
 
@@ -4882,7 +4887,7 @@ void
 start_init (tree decl, tree asmspec_tree ATTRIBUTE_UNUSED, int top_level)
 {
   const char *locus;
-  struct initializer_stack *p = xmalloc (sizeof (struct initializer_stack));
+  struct initializer_stack *p = XNEW (struct initializer_stack);
 
   p->decl = constructor_decl;
   p->require_constant_value = require_constant_value;