* gettime.c (asctimestamp): Add a note on a non-avoidable gcc warning.

* util.h [!HAVE_VASPRINTF]: Add printf format attribute to the
replacement function.

* miscellaneous.c (xasprintf): New.

common/ChangeLog

@@ -1,3 +1,12 @@
+2003-12-17  Werner Koch  <wk@gnupg.org>
+
+	* gettime.c (asctimestamp): Add a note on a non-avoidable gcc warning.
+
+	* util.h [!HAVE_VASPRINTF]: Add printf format attribute to the
+	replacement function.
+
+	* miscellaneous.c (xasprintf): New.
+
 2003-11-14  Werner Koch  <wk@gnupg.org>
 
 	* mkdtemp.c (mkdtemp): Use gcry_create_nonce.

common/gettime.c

@@ -246,9 +246,11 @@ asctimestamp( u32 stamp )
       mem2str( fmt, nl_langinfo(D_T_FMT), DIM(fmt)-3 );
       if( strstr( fmt, "%Z" ) == NULL )
 	strcat( fmt, " %Z");
-      strftime( buffer, DIM(buffer)-1, fmt, tp );
+      /* NOTE: gcc -Wformat-noliteral will complain here.  I have
+         found no way to suppress this warning .*/
+      strftime (buffer, DIM(buffer)-1, fmt, tp);
 #else
-      /* fixme: we should check whether the locale appends a " %Z"
+      /* FIXME: we should check whether the locale appends a " %Z"
        * These locales from glibc don't put the " %Z":
        * fi_FI hr_HR ja_JP lt_LT lv_LV POSIX ru_RU ru_SU sv_FI sv_SE zh_CN
        */

common/miscellaneous.c

@@ -25,6 +25,26 @@
 #include "util.h"
 #include "iobuf.h"
 
+/* Same as asprintf but return an allocated buffer suitable to be
+   freed using xfree.  This function simply dies on memory failure,
+   thus no extra check is required. */
+char *
+xasprintf (const char *fmt, ...)
+{
+  va_list ap;
+  char *buf, *p;
+
+  va_start (ap, fmt);
+  if (vasprintf (&buf, fmt, ap) < 0)
+    log_fatal ("asprintf failed: %s\n", strerror (errno));
+  va_end (ap);
+  p = xstrdup (buf);
+  free (buf);
+  return p;
+}
+
+
+
 /* Decide whether the filename is stdout or a real filename and return
  * an appropriate string.  */
 const char *

common/util.h

@@ -99,6 +99,12 @@ int answer_is_yes_no_quit (const char *s);
 
 
 /*-- miscellaneous.c --*/
+
+/* Same as asprintf but return an allocated buffer suitable to be
+   freed using xfree.  This function simply dies on memory failure,
+   thus no extra check is required. */
+char *xasprintf (const char *fmt, ...) JNLIB_GCC_A_PRINTF(1,2);
+
 const char *print_fname_stdout (const char *s);
 const char *print_fname_stdin (const char *s);
 void print_string (FILE *fp, const byte *p, size_t n, int delim);
@@ -113,7 +119,7 @@ int is_file_compressed (const char *s, int *ret_rc);
 #if !HAVE_VASPRINTF
 #include <stdarg.h>
 int vasprintf (char **result, const char *format, va_list args);
-int asprintf (char **result, const char *format, ...);
+int asprintf (char **result, const char *format, ...) JNLIB_GCC_A_PRINTF(2,3);
 #endif