diff --git a/gccwarns.diff b/gccwarns.diff
index 3d35c98..0fdb244 100644
--- a/gccwarns.diff
+++ b/gccwarns.diff
@@ -1,3 +1,7 @@
+From: Jan Engelhardt <jengelh@inai.de>
+Date: 2018-05-17 22:26:23.600238551 +0200
+
+Repair some cases of UB that might be responsible for gcc8 failures.
 
 [  191s] searchinpath.c: In function 'searchonefile':
 [  191s] searchinpath.c:221:5: warning: implicit declaration of function 'eaccess'; did you mean 'access'? [-Wimplicit-function-declaration]