1 files changed, 57 insertions, 0 deletions
diff --git a/usr.bin/cc/t_libm_cabs.sh b/usr.bin/cc/t_libm_cabs.sh
new file mode 100644
index 000000000000..85cce3f19228
--- /dev/null
+++ b/usr.bin/cc/t_libm_cabs.sh
@@ -0,0 +1,57 @@
+#	$NetBSD: t_libm_cabs.sh,v 1.1 2026/01/27 20:01:47 mrg Exp $
+#
+# Copyright (c) 2026 Matthew R. Green
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+
+atf_test_case libm_cabs
+libm_cabs_head() {
+	atf_set "descr" "compile using __builtin_cabsl(3) which should be renamed"
+	atf_set "require.progs" "cc"
+}
+
+#
+# Simple program that misses including <complex.h> so that the renames
+# GCC itself is supposed to be doing are also applied, which makes their
+# uses in libgfortran use the correct symbols.  The use of
+# "__builtin_cabsl" should become "__c99_cabsl".
+#
+libm_cabs_body() {
+	cat > cabsl.c << EOF
+long double my_foo(long double _Complex);
+long double
+my_foo(long double _Complex z)
+{
+	return __builtin_cabsl(z);
+}
+EOF
+	atf_check -s exit:0 -o ignore -e ignore cc -O3 -c cabsl.c
+	atf_check -s exit:0 -o match:__c99_cabsl -e empty objdump -dr cabsl.o
+}
+
+atf_init_test_cases()
+{
+
+	atf_add_test_case libm_cabs
+}