+2016-10-02 Jim Meyering <meyering@fb.com>
+
+ vasnprintf.c: avoid spurious warning from GCC 7
+ The presence of cpp directives renders this "FALLTHROUGH" comment
+ ineffective, so does not suppress the -Wimplicit-fallthrough warning
+ from GCC 7 built from git on 2016-10-02.
+ * lib/vasnprintf.c (VASNPRINTF): Move comment down past two cpp
+ directives, so that it takes effect once again. This is clearly
+ not a proper change, and I will revert it once this bug is fixed:
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77817
+
2016-10-01 Jim Meyering <meyering@fb.com>
getprogname: correct the test for a __progname variable