1 files changed, 56 insertions, 0 deletions
diff --git a/math/test-narrow-macros.c b/math/test-narrow-macros.c
new file mode 100644
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+++ b/math/test-narrow-macros.c
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+/* Test code declaring narrowing functions does not conflict with user macros.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The code generating declarations of narrowing functions involves
+   concatenations of fragments of function names that are not
+   themselves reserved; thus, it needs to be arranged so that those
+   fragments are not subject to macro expansion.  Verify that
+   inclusion of <math.h> compiles with such fragments defined as
+   macros.  */
+
+#define f test macro
+#define d test macro
+#define l test macro
+#define f16 test macro
+#define f32 test macro
+#define f64 test macro
+#define f128 test macro
+#define f32x test macro
+#define f64x test macro
+#define f128x test macro
+#define add test macro
+#define sub test macro
+#define mul test macro
+#define div test macro
+#define dadd test macro
+#define dsub test macro
+#define dmul test macro
+#define ddiv test macro
+#define dsqrt test macro
+#define dfma test macro
+
+#include <math.h>
+
+static int
+do_test (void)
+{
+  /* This is a compilation test.  */
+  return 0;
+}
+
+#include <support/test-driver.c>