* c-parse.in (cast_expr): Avoid -Wstrict-prototype warnings for

	unprototyped function pointer casts on integer constants.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@35638 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 71289d2..201ecdc 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-08-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+       * c-parse.in (cast_expr): Avoid -Wstrict-prototype warnings for
+       unprototyped function pointer casts on integer constants.
+
 2000-08-11 Laurynas Biveinis <lauras@softhome.net>
 
        * fixproto: Recognize DOS paths with drive letters as absolute paths.

diff --git a/gcc/c-parse.in b/gcc/c-parse.in
index 4e6d434..3e131cc 100644 (file)
--- a/gcc/c-parse.in
+++ b/gcc/c-parse.in
@@ -518,7 +518,14 @@ alignof:
 cast_expr:
        unary_expr
        | '(' typename ')' cast_expr  %prec UNARY
-               { tree type = groktypename ($2);
+               { tree type;
+                 int SAVED_warn_strict_prototypes = warn_strict_prototypes;
+                 /* This avoids warnings about unprototyped casts on
+                     integers.  E.g. "#define SIG_DFL (void(*)())0".  */
+                 if (TREE_CODE ($4) == INTEGER_CST)
+                   warn_strict_prototypes = 0;
+                 type = groktypename ($2);
+                 warn_strict_prototypes = SAVED_warn_strict_prototypes;
                  $$ = build_c_cast (type, $4); }
        | '(' typename ')' '{' 
                { start_init (NULL_TREE, NULL, 0);