Failures on Fedora-x86_64-cc-with-index, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	fedora-x86-64-2

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-cc-with-index/builds/6739>

Commit(s) tested:
	b33404388e5bbd8a1fddfde73cd4593ae2b557e8

Author(s) (in the same order as the commits):
	H.J. Lu <hjl.tools@gmail.com>

Subject:
	gdb: Fix build failure with GCC 7

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-cc-with-index/b3/b33404388e5bbd8a1fddfde73cd4593ae2b557e8/>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.base/signals-state-child.exp: signals states are identical
============================


*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-cc-with-index/xfails/master/xfail;hb=8b95e33>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

	<http://git.sergiodj.net/?p=gdb-xfails.git;a=blob;f=xfails/Fedora-x86_64-cc-with-index/xfails/master/xfail.table;hb=8b95e33>