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 <[email protected]> Fixes: https://bugs.launchpad.net/qemu/+bug/1878628 Acked-by: Thomas Huth <[email protected]> Reviewed-by: Eric Blake <[email protected]> Reviewed-by: Alex Bennée <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Signed-off-by: Richard Henderson <[email protected]> --- v2: Use the new add_to function. --- configure | 1 + 1 file changed, 1 insertion(+) 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" -- 2.25.1
