Fix 64b build.

3 files changed, 19 insertions, 7 deletions

diff --git a/src/src/config.h.defaults b/src/src/config.h.defaults
index ef83621b3..361051858 100644
--- a/src/src/config.h.defaults
+++ b/src/src/config.h.defaults
@@ -180,7 +180,10 @@ just in case. */
 #define ROOT_UID                      0
 #define ROOT_GID                      0
 
-/* Sizes for integer arithmetic.  Go for 64bit; can be overridden in OS/Makefile-FOO */
+/* Sizes for integer arithmetic.
+Go for 64bit; can be overridden in OS/Makefile-FOO
+If you make it a different number of bits, provide a definition
+for EXIM_64B_MAX and _MIN in OS/oh.h-FOO */
 #define int_eximarith_t int64_t
 #define PR_EXIM_ARITH "%" PRId64		/* C99 standard, printf %lld */
 #define SC_EXIM_ARITH "%" SCNi64		/* scanf incl. 0x prefix */
diff --git a/src/src/exim.h b/src/src/exim.h
index 2816fc98a..066e99d21 100644
--- a/src/src/exim.h
+++ b/src/src/exim.h
@@ -106,6 +106,15 @@ making unique names. */
 #define UCHAR_MAX 255
 #endif
 
+
+/* To match int_eximarith_t.  Define in OS/os.h-<your-system> to override. */
+#ifndef EXIM_ARITH_MAX
+# define EXIM_ARITH_MAX ((int_eximarith_t)9223372036854775807LL)
+#endif
+#ifndef EXIM_ARITH_MIN
+# define EXIM_ARITH_MIN (-EXIM_ARITH_MAX - 1)
+#endif
+
 /* Some systems have PATH_MAX and some have MAX_PATH_LEN. */
 
 #ifndef PATH_MAX
diff --git a/src/src/expand.c b/src/src/expand.c
index 9fc00cf41..c7dc2742c 100644
--- a/src/src/expand.c
+++ b/src/src/expand.c
@@ -3389,12 +3389,12 @@ if (*error == NULL)
      * can just let the other invalid results occur otherwise, as they have
      * until now.  For this one case, we can coerce.
      */
-    if (y == -1 && x == LLONG_MIN && op != '*')
+    if (y == -1 && x == EXIM_ARITH_MIN && op != '*')
       {
       DEBUG(D_expand)
         debug_printf("Integer exception dodging: " PR_EXIM_ARITH "%c-1 coerced to " PR_EXIM_ARITH "\n",
-            LLONG_MIN, op, LLONG_MAX);
-      x = LLONG_MAX;
+            EXIM_ARITH_MIN, op, EXIM_ARITH_MAX);
+      x = EXIM_ARITH_MAX;
       continue;
       }
     if (op == '*')
@@ -6514,17 +6514,17 @@ else
     default:
       break;
     case 'k':
-      if (value > LLONG_MAX/1024 || value < LLONG_MIN/1024) errno = ERANGE;
+      if (value > EXIM_ARITH_MAX/1024 || value < EXIM_ARITH_MIN/1024) errno = ERANGE;
       else value *= 1024;
       endptr++;
       break;
     case 'm':
-      if (value > LLONG_MAX/(1024*1024) || value < LLONG_MIN/(1024*1024)) errno = ERANGE;
+      if (value > EXIM_ARITH_MAX/(1024*1024) || value < EXIM_ARITH_MIN/(1024*1024)) errno = ERANGE;
       else value *= 1024*1024;
       endptr++;
       break;
     case 'g':
-      if (value > LLONG_MAX/(1024*1024*1024) || value < LLONG_MIN/(1024*1024*1024)) errno = ERANGE;
+      if (value > EXIM_ARITH_MAX/(1024*1024*1024) || value < EXIM_ARITH_MIN/(1024*1024*1024)) errno = ERANGE;
       else value *= 1024*1024*1024;
       endptr++;
       break;