[PATCH] configure: Disable -Wtautological-type-limit-compare

[Richard Henderson <richard.henderson@linaro.org>]

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.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 configure | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure b/configure
index f087d2bcd1..693f01327f 100755
--- a/configure
+++ b/configure
@@ -2009,6 +2009,8 @@ gcc_flags="-Wno-missing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
 gcc_flags="-Wendif-labels -Wno-shift-negative-value $gcc_flags"
 gcc_flags="-Wno-initializer-overrides -Wexpansion-to-defined $gcc_flags"
 gcc_flags="-Wno-string-plus-int -Wno-typedef-redefinition $gcc_flags"
+gcc_flags="$gcc_flags -Wno-tautological-type-limit-compare"
+
 # Note that we do not add -Werror to gcc_flags here, because that would
 # enable it for all configure tests. If a configure test failed due
 # to -Werror this would just silently disable some features,
-- 
2.26.2