+2018-06-24 Jim Meyering <meyering@fb.com>
+
+ manywarnings: accommodate GCC 9.0-pre: remove -Wchkp and -Wabi
+ * build-aux/gcc-warning.spec: Add them here, each with an explanation.
+ * m4/manywarnings.m4: Remove them.
+ Otherwise, building coreutils, I would see this:
+ cc1: error: deprecated command line option '-Wchkp' [-Werror]
+ cc1: error: -Wabi won't warn about anything [-Werror=abi]
+ cc1: note: -Wabi warns about differences from the most up-to-date ABI,\
+ which is also used by default
+ cc1: note: use e.g. -Wabi=11 to warn about changes from GCC 7
+
2018-06-24 Bruno Haible <bruno@clisp.org>
af_alg tests: Add another test.
--extra-warnings alias for -Wextra
-Wabi-tag c++
-Wabi= c++
+-Wabi this is now a no-op
-Waggregate-return obsolescent
-Waliasing fortran
-Walign-commons fortran
-Wcatch-value c++
-Wcatch-value=<0,3> c++
-Wcharacter-truncation fortran
+-Wchkp deprecated
-Wclass-memaccess c++
-Wcompare-reals fortran
-Wconditionally-supported c++ and objc++