X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/b9d8b5586790946de2fef94e0b8c43d573a71090..54e7ce4ad20a6977ee895a358259122bf3630090:/src/src/expand.c

diff --git a/src/src/expand.c b/src/src/expand.c
index bf425ae81..06e0eb0ce 100644
--- a/src/src/expand.c
+++ b/src/src/expand.c
@@ -3107,7 +3107,16 @@ if (*error == NULL)
     int y = eval_op_unary(&s, decimal, error);
     if (*error != NULL) break;
     if (op == '*') x *= y;
-      else if (op == '/') x /= y;
+      else if (op == '/')
+        {
+        if (y == 0)
+          {
+          *error = US"divide by zero";
+          x = 0;
+          break;
+          }
+        x /= y;
+        }
       else x %= y;
     }
   }