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 <ebl...@redhat.com> Fixes: https://bugs.launchpad.net/qemu/+bug/1878628 Acked-by: Thomas Huth <th...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Reviewed-by: Alex Bennée <alex.ben...@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com> Signed-off-by: Richard Henderson <richard.hender...@linaro.org> --- v2: Use the new add_to function. --- configure | 1 + 1 file changed, 1 insertion(+) diff --git a/configure b/configure index 464202e375..8b33447048 100755 --- a/configure +++ b/configure @@ -2035,6 +2035,7 @@ 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" -- 2.25.1