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Temporarily disable format truncation warnings

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GCC 7.1 introduces a new -Wformat-truncation warning
flag that reports if it thinks the maximum possible
size of the formatted output will exceed the provided
fixed buffer. This is enabled automatically by the
-Wformat warning flag. There are quite a few places
hit by this in libvirt which need rewriting. This is
non-trivial work in some places, so temporarily
disable the new warning until those fixes can be
implemented.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
(cherry picked from commit f1acc4130c)
This commit is contained in:
Daniel P. Berrange 2017-06-15 14:22:54 +01:00 committed by Cole Robinson
parent 5f71aa7347
commit d2ce076f52
1 changed files with 4 additions and 0 deletions
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m4/virt-compile-warnings.m4
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@ -169,6 +169,10 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
wantwarn="$wantwarn -Wno-format"
fi
# -Wformat enables this by default, and we should keep it,
# but need to rewrite various areas of code first
wantwarn="$wantwarn -Wno-format-truncation"
# This should be < 256 really. Currently we're down to 4096,
# but using 1024 bytes sized buffers (mostly for virStrerror)
# stops us from going down further