dfa.c evokes a new warning from GCC 7. I fixed it with this:
From 5f919be9d0db97e8daecaa61e6f4ff3b96b2a0fe Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyer...@fb.com>
Date: Wed, 28 Sep 2016 21:20:38 -0700
Subject: [PATCH] dfa: build: avoid warning from GCC 7's new
-Wimplicit-fallthrough
* lib/dfa.c (dfassbuild): Mark the end of this case with a
/* fallthrough */ comment.
---
ChangeLog | 4 ++++
lib/dfa.c | 1 +
2 files changed, 5 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index 21a55e8..06174b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
2016-09-28 Jim Meyering <meyer...@fb.com>
+ dfa: build: avoid warning from GCC 7's new -Wimplicit-fallthrough
+ * lib/dfa.c (dfassbuild): Mark the end of this case with a
+ /* fallthrough */ comment.
+
getprogname: avoid __progname vs program_invocation_short_name pitfall
I.e., don't let the OpenBSD 5.1 fix induce failure when using newer
glibc. Would have caused failure with Fedora 25's glibc-2.24-3, but
diff --git a/lib/dfa.c b/lib/dfa.c
index 4c41fa6..c4dc626 100644
--- a/lib/dfa.c
+++ b/lib/dfa.c
@@ -3434,6 +3434,7 @@ dfassbuild (struct dfa *d)
sup->tokens[j++] = EMPTY;
break;
}
+ /* fallthrough */
default:
sup->tokens[j++] = d->tokens[i];
if ((0 <= d->tokens[i] && d->tokens[i] < NOTCHAR)
--
2.7.4
