From: Daniel P. Berrange <berrange@redhat.com>
Date: Thu, 15 Jun 2017 13:22:54 +0000 (+0100)
Subject: Temporarily disable format truncation warnings
X-Git-Tag: v3.5.0-rc1~79
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1acc4130c4d9a15fcf327f02cfc42de7eca52ff;p=thirdparty%2Flibvirt.git

Temporarily disable format truncation warnings

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>
---

diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4
index d7bb172f32..fa0940fc68 100644
--- a/m4/virt-compile-warnings.m4
+++ b/m4/virt-compile-warnings.m4
@@ -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