From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 17 May 2024 04:06:58 +0000 (-0700)
Subject: cksum: improve API consistency checking
X-Git-Tag: v9.6~234
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44084a3ac216b7a53cdf78a9361010c084fc0535;p=thirdparty%2Fcoreutils.git

cksum: improve API consistency checking

* src/cksum.c (main) [CRCTAB]: Generate updated crctab.c (see below).
* src/crctab.c: Include cksum.h, to check consistency
between decl and defn.  Include stdio.h since cksum.h needs it.
---

diff --git a/src/cksum.c b/src/cksum.c
index d93ec6e575..ca67755394 100644
--- a/src/cksum.c
+++ b/src/cksum.c
@@ -25,7 +25,7 @@
   do something like the following:
 
       cc -I../lib -DCRCTAB -o crctab cksum.c
-      crctab > crctab.c
+      ./crctab > crctab.c
 
   This software is compatible with neither the System V nor the BSD
   'sum' program.  It is supposed to conform to POSIX, except perhaps
@@ -118,7 +118,9 @@ main (void)
 
   printf ("#include <config.h>\n");
   printf ("#include <stdint.h>\n");
-  printf ("\nextern uint_fast32_t const crctab[8][256];\n");
+  printf ("#include <stdio.h>\n");
+  printf ("#include \"cksum.h\"\n");
+  printf ("\n");
   printf ("uint_fast32_t const crctab[8][256] = {\n");
   for (int y = 0; y < 8; y++)
     {
diff --git a/src/crctab.c b/src/crctab.c
index f9f82ef3c2..bf5d884bf7 100644
--- a/src/crctab.c
+++ b/src/crctab.c
@@ -1,7 +1,8 @@
 #include <config.h>
 #include <stdint.h>
+#include <stdio.h>
+#include "cksum.h"
 
-extern uint_fast32_t const crctab[8][256];
 uint_fast32_t const crctab[8][256] = {
 {
   0x00000000,