[src/trunk]: src/tests/lib/libc/gen Mark division by 0 as expected in sigfpe_int

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/62a7cc0e9059
branches:  trunk
changeset: 745032:62a7cc0e9059
user:      kamil <kamil%NetBSD.org@localhost>
date:      Fri Feb 21 22:25:50 2020 +0000

description:
Mark division by 0 as expected in sigfpe_int

Disable ubsan instrumentation on the operation.

diffstat:

 tests/lib/libc/gen/t_siginfo.c |  16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)

diffs (37 lines):

diff -r 80d23a0107a5 -r 62a7cc0e9059 tests/lib/libc/gen/t_siginfo.c
--- a/tests/lib/libc/gen/t_siginfo.c    Fri Feb 21 22:14:59 2020 +0000
+++ b/tests/lib/libc/gen/t_siginfo.c    Fri Feb 21 22:25:50 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_siginfo.c,v 1.37 2020/02/11 03:11:42 riastradh Exp $ */
+/* $NetBSD: t_siginfo.c,v 1.38 2020/02/21 22:25:50 kamil Exp $ */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -361,6 +361,18 @@
            "for integer div-by-zero (PR port-i386/43655)");
 }
 
+#if defined(__clang__)
+__attribute__((no_sanitize("undefined")))
+#else               
+__attribute__((no_sanitize_undefined))
+#endif
+static long int
+sigfpe_int_division(long int a, long int b)
+{
+
+       return a / b;
+}
+
 ATF_TC_BODY(sigfpe_int, tc)
 {
        struct sigaction sa;
@@ -379,7 +391,7 @@
 #elif defined(_FLOAT_IEEE754)
                fpsetmask(FP_X_INV|FP_X_DZ|FP_X_OFL|FP_X_UFL|FP_X_IMP);
 #endif
-               printf("%ld\n", 1 / l);
+               printf("%ld\n", sigfpe_int_division(1, l));
        }
        if (intdiv_signalled == 0)
                atf_tc_fail("FPE signal handler was not invoked");