MFC r312213,r313713:

r312213:

Turn COMPILER_VERSION/COMPILER_TYPE make check into a compile-time check
of the clang version

This works around breakage on ^/stable/10 when running installworld from
a ^/stable/10 host where the test wouldn't be compiled on the first
go-around and would be missing when make installworld is run.

PR:		208703

r313713:

Handle clang 4.x+ with the compile-time exception added in r312213

It also fails the assertions noted in bug 208703

PR:	208703
PR:	217084

1 files changed, 20 insertions, 2 deletions

diff --git a/lib/msun/tests/fmaxmin_test.c b/lib/msun/tests/fmaxmin_test.c
index 7ddcc87..24056b0 100644
--- a/lib/msun/tests/fmaxmin_test.c
+++ b/lib/msun/tests/fmaxmin_test.c
@@ -86,6 +86,8 @@ testall_r(long double big, long double small)
 	return (ok);
 }
 
+const char *comment = NULL;
+
 /*
  * Test all the functions: fmaxf, fmax, fmaxl, fminf, fmin, and fminl,
  * in all rounding modes and with the arguments in different orders.
@@ -107,10 +109,18 @@ testall(int testnum, long double big, long double small)
 			break;
 		}
 	}
-	printf("%sok %d - big = %.20Lg, small = %.20Lg\n",
-	       (i == 4) ? "" : "not ", testnum, big, small);
+	printf("%sok %d - big = %.20Lg, small = %.20Lg%s\n",
+	       (i == 4) ? "" : "not ", testnum, big, small,
+	       comment == NULL ? "" : comment);
 }
 
+/* Clang 3.8.0+ fails the invariants for testcase 6, 7, 10, and 11. */
+#if defined(__clang__) && \
+    ((__clang_major__ >  3)) || \
+    ((__clang_major__ == 3 && __clang_minor__ >= 8))
+#define	affected_by_bug_208703
+#endif
+
 int
 main(int argc, char *argv[])
 {
@@ -122,15 +132,23 @@ main(int argc, char *argv[])
 	testall(3, nextafterf(42.0, INFINITY), 42.0);
 	testall(4, -5.0, -5.0);
 	testall(5, -3.0, -4.0);
+#ifdef affected_by_bug_208703
+	comment = "# TODO: testcase 6-7 fails invariant with clang 3.8+ (bug 208703)";
+#endif
 	testall(6, 1.0, NAN);
 	testall(7, INFINITY, NAN);
+	comment = NULL;
 	testall(8, INFINITY, 1.0);
 	testall(9, -3.0, -INFINITY);
 	testall(10, 3.0, -INFINITY);
+#ifdef affected_by_bug_208703
+	comment = "# TODO: testcase 11-12 fails invariant with clang 3.8+ (bug 208703)";
+#endif
 	testall(11, NAN, NAN);
 
 	/* This test isn't strictly required to work by C99. */
 	testall(12, 0.0, -0.0);
+	comment = NULL;
 
 	return (0);
 }