avoid a warning from gcc

* lib/vasnprintf.c (IF_LINT): Define.
(scale10_round_decimal_long_double):
Use it to avoid a "may be used uninitialized" warning.

diff --git a/ChangeLog b/ChangeLog
index 95c58ec3a61ec946f09a7e802d83b3dcf57b5a84..c1bd3f2bf58c7276d811d7da31e95e6740b4f4f0 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-05-21  Jim Meyering  <meyering@redhat.com>
+
+       avoid a warning from gcc
+       * lib/vasnprintf.c (IF_LINT): Define.
+       (scale10_round_decimal_long_double):
+       Use it to avoid a "may be used uninitialized" warning.
+
 2008-05-21  Simon Josefsson  <simon@josefsson.org>
 
        * m4/memcmp.m4: When cross-compiling, assume memcmp works if it is

diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index 66ce42057ea5399ec1b3138f3dab37f93592f813..9018c6096888025ae67a82d89556fb27dfcbae39 100644 (file)
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -117,6 +117,13 @@
 # include "fpucw.h"
 #endif
 
+/* Use this to suppress gcc's `...may be used before initialized' warnings. */
+#ifdef lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
 #if HAVE_WCHAR_T
 # if HAVE_WCSLEN
 #  define local_wcslen wcslen
@@ -1205,7 +1212,7 @@ scale10_round_decimal_decoded (int e, mpn_t m, void *memory, int n)
 static char *
 scale10_round_decimal_long_double (long double x, int n)
 {
-  int e;
+  int e IF_LINT(= 0);
   mpn_t m;
   void *memory = decode_long_double (x, &e, &m);
   return scale10_round_decimal_decoded (e, m, memory, n);