Re: [exim] [exim-dev] Exim 4.80 RC2 uploaded

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Autor: Phil Pennock
Data:  
A: Todd Lyons
CC: exim-users, exim-dev
Assumpte: Re: [exim] [exim-dev] Exim 4.80 RC2 uploaded
On 2012-05-19 at 08:55 -0700, Todd Lyons wrote:
> Current master builds just fine on my Ubuntu machines (11.04 and 12.04).
> Building RC2 on CentOS 5.x, compiling exim.c is failing with this:


> exim.c: In function ‘show_whats_supported’:
> exim.c:1007: warning: implicit declaration of function ‘STRINGIFY’
> exim.c:1007: error: expected ‘)’ before string constant
> exim.c:1007: warning: format ‘%s’ expects type ‘char *’, but argument 6 has
> type ‘int’
> exim.c:1007: warning: too few arguments for format


> The relevant lines are:
> 1007   fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n"
> 1008              "                       Runtime: %s\n",
> 1009           PCRE_MAJOR, PCRE_MINOR,
> 1010           /* PRE_PRERELEASE is either defined and empty or a string.
> 1011            * unless its an ancient version of PCRE in which case it
> 1012            * is not defined */
> 1013 #ifdef PCRE_PRERELEASE
> 1014 # define STRINGIFY(x) #x
> 1015           STRINGIFY(PCRE_PRERELEASE) "",
> 1016 # undef STRINGIFY
> 1017 #else
> 1018           "",
> 1019 #endif
> 1020           pcre_version());

>
> It looks fine to me, but the #define for some reason is not occurring. Can
> you spot anything wrong with this?


*sigh* The very first change after the 4.77 release, because of problems
folks had with PCRE_PRERELEASE in that.

There's one mistake in it for sure: "PCRE_PRERELEASE" is being inserted
as a literal string. Doh. I've looked over that output many times and
just assumed I had a prerelease of PCRE installed.

I've rewritten the layout to move the #ifdef outside the function
definition, which *should* have absolutely no impact upon matters, but
maybe it does.

Does the attached patch fix this for you?

-Phil
diff --git a/src/src/exim.c b/src/src/exim.c
index 720d228..af01d40 100644
--- a/src/src/exim.c
+++ b/src/src/exim.c
@@ -976,20 +976,21 @@ DEBUG(D_any) do {
     }
   }


+  /* PRE_PRERELEASE is either defined and empty or a bare sequence of
+  characters; unless it's an ancient version of PCRE in which case it
+  is not defined. */
+#ifndef PCRE_PRERELEASE
+#define PCRE_PRERELEASE
+#endif
+#define QUOTE(X) #X
+#define EXPAND_AND_QUOTE(X) QUOTE(X)
   fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n"
              "                       Runtime: %s\n",
           PCRE_MAJOR, PCRE_MINOR,
-          /* PRE_PRERELEASE is either defined and empty or a string.
-           * unless its an ancient version of PCRE in which case it
-           * is not defined */
-#ifdef PCRE_PRERELEASE
-# define STRINGIFY(x) #x
-          STRINGIFY(PCRE_PRERELEASE) "",
-# undef STRINGIFY
-#else
-          "",
-#endif
+          EXPAND_AND_QUOTE(PCRE_PRERELEASE) "",
           pcre_version());
+#undef QUOTE
+#undef EXPAND_AND_QUOTE


init_lookup_list();
for (i = 0; i < lookup_list_count; i++)