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[v4,4/6] configure: Disable -Wtautological-type-limit-compare

Message ID 20200617201309.1640952-5-richard.henderson@linaro.org
State Accepted
Commit aabab96797a7d61989c25a7ca2b094591bbc74f9
Headers show
Series Vs clang-10 and gcc-9 warnings | expand

Commit Message

Richard Henderson June 17, 2020, 8:13 p.m. UTC 
Clang 10 enables this by default with -Wtype-limit.

All of the instances flagged by this Werror so far have been
cases in which we really do want the compiler to optimize away
the test completely.  Disabling the warning will avoid having
to add ifdefs to work around this.

Cc: Eric Blake <eblake@redhat.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1878628
Acked-by: Thomas Huth <thuth@redhat.com>

Reviewed-by: Eric Blake <eblake@redhat.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 configure | 1 +
 1 file changed, 1 insertion(+)

-- 
2.25.1
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Patch

diff --git a/configure b/configure
index a8bef95282..5e27229f58 100755
--- a/configure
+++ b/configure
@@ -2054,6 +2054,7 @@  add_to nowarn_flags -Wno-missing-include-dirs
 add_to nowarn_flags -Wno-shift-negative-value
 add_to nowarn_flags -Wno-string-plus-int
 add_to nowarn_flags -Wno-typedef-redefinition
+add_to nowarn_flags -Wno-tautological-type-limit-compare
 
 gcc_flags="$warn_flags $nowarn_flags"