iconv/skeleton.c "division by zero" warnings

[Roland McGrath]

With gcc-3.1 (actually, current gcc from CVS), I get warnings about the
divisions by zero in dead code.  (That seems like a feature to me.)  
This patch changes `if' to #if to avoid that.   Ok to commit?


2001-12-22  Roland McGrath  <roland@frob.com>

	* iconv/skeleton.c [!RESET_INPUT_BUFFER && !SAVE_RESET_STATE]:
	Use preprocessor #if conditionals instead of `if' to avoid
	warnings about divide by zero in dead code.

Index: skeleton.c
===================================================================
RCS file: /cvs/glibc/libc/iconv/skeleton.c,v
retrieving revision 1.53
diff -u -b -p -r1.53 skeleton.c
--- skeleton.c	2001/07/06 04:54:47	1.53
+++ skeleton.c	2001/12/23 02:17:53
@@ -195,13 +195,16 @@ static int to_object;
 # if MIN_NEEDED_FROM == MAX_NEEDED_FROM && MIN_NEEDED_TO == MAX_NEEDED_TO
 /* We have to use these `if's here since the compiler cannot know that
    (outbuf - outerr) is always divisible by MIN_NEEDED_TO.  */
+#  if (MIN_NEEDED_FROM % MIN_NEEDED_TO == 0)
 #  define RESET_INPUT_BUFFER \
-  if (MIN_NEEDED_FROM % MIN_NEEDED_TO == 0)				      \
-    *inptrp -= (outbuf - outerr) * (MIN_NEEDED_FROM / MIN_NEEDED_TO);	      \
-  else if (MIN_NEEDED_TO % MIN_NEEDED_FROM == 0)			      \
-    *inptrp -= (outbuf - outerr) / (MIN_NEEDED_TO / MIN_NEEDED_FROM);	      \
-  else									      \
+     *inptrp -= (outbuf - outerr) * (MIN_NEEDED_FROM / MIN_NEEDED_TO)
+#  elif (MIN_NEEDED_TO % MIN_NEEDED_FROM == 0)
+#   define RESET_INPUT_BUFFER \
+     *inptrp -= (outbuf - outerr) / (MIN_NEEDED_TO / MIN_NEEDED_FROM)
+#  else
+#   define RESET_INPUT_BUFFER \
     *inptrp -= ((outbuf - outerr) / MIN_NEEDED_TO) * MIN_NEEDED_FROM
+#  endif
 # endif
 #endif