commit 78a8827fd4d4c814e63a8670cf88453f1586f4c5
parent 3871fb732ddd07d48a9d449c09e7b42d25a87727
Author: George Kadianakis <desnacked@riseup.net>
Date: Mon, 25 Feb 2019 15:29:41 +0200
Silence unneeded clang warns that triggered in prob distr tests.
See https://trac.torproject.org/projects/tor/ticket/29528#comment:3
and https://bugs.llvm.org/show_bug.cgi?id=19535
Diffstat:
1 file changed, 5 insertions(+), 0 deletions(-)
diff --git a/configure.ac b/configure.ac
@@ -1198,6 +1198,11 @@ if test "$fragile_hardening" = "yes"; then
AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
fi
+ TOR_TRY_COMPILE_WITH_CFLAGS([-fno-sanitize=float-divide-by-zero], also_link, CFLAGS_UBSAN="-fno-sanitize=float-divide-by-zero", true)
+ if test "$tor_cv_cflags__fno_sanitize_float_divide_by_zero" = "yes" && test "$tor_can_link__fno_sanitize_float_divide_by_zero" != "yes"; then
+ AC_MSG_ERROR([The compiler supports -fno-sanitize=float-divide-by-zero, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
+ fi
+
TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
fi
