? tests/usr.bin/cc/t_hello.out
Index: tests/usr.bin/cc/t_hello.sh
===================================================================
RCS file: /cvsroot/src/tests/usr.bin/cc/t_hello.sh,v
retrieving revision 1.3
diff -p -u -r1.3 t_hello.sh
--- tests/usr.bin/cc/t_hello.sh	3 Apr 2016 14:41:30 -0000	1.3
+++ tests/usr.bin/cc/t_hello.sh	10 Jan 2017 20:55:41 -0000
@@ -49,6 +49,12 @@ hello32_head() {
 	atf_set "require.progs" "cc file diff cat"
 }
 
+atf_test_case hello_usrinclude
+hello_usrinclude_head () {
+	atf_set "descr" "compile and run \"hello world\" with each /usr/include file"
+	atf_set "require.progs" "cc"
+}
+
 hello_body() {
 	cat > test.c << EOF
 #include <stdio.h>
@@ -134,6 +140,23 @@ EOF
 	atf_check -s exit:0 -o inline:"hello static world\n" ./hello
 }
 
+hello_usrinclude_body() {
+	touch broken
+	find /usr/include -name '*.h' -type f \
+	| {
+		while read h; do
+			cat > test.c <<EOF
+#include <$h>
+int main(void) {return 0;}
+EOF
+			if ! { cc -o hello test.c && ./hello; }; then
+				echo "$h" >> broken
+			fi
+	        done
+	}
+	atf_check -o file:/dev/null cat broken
+}
+
 atf_init_test_cases()
 {
 
@@ -141,4 +164,5 @@ atf_init_test_cases()
 	atf_add_test_case hello_pic
 	atf_add_test_case hello_pie
 	atf_add_test_case hello32
+	atf_add_test_case hello_usrinclude
 }