Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* testsuite/26_numerics/lerp.cc: Add header name to #error.
* testsuite/26_numerics/midpoint/integral.cc: Likewise.
* testsuite/26_numerics/midpoint/version.cc: New test.
#include <cmath>
#ifndef __cpp_lib_interpolate
-# error "Feature-test macro for midpoint and lerp missing"
+# error "Feature-test macro for midpoint and lerp missing in <cmath>"
#elif __cpp_lib_interpolate != 201902L
-# error "Feature-test macro for midpoint and lerp has wrong value"
+# error "Feature-test macro for midpoint and lerp has wrong value in <cmath>"
#endif
#include <limits>
#include <numeric>
#ifndef __cpp_lib_interpolate
-# error "Feature-test macro for midpoint and lerp missing"
+# error "Feature-test macro for midpoint and lerp missing in <numeric>"
#elif __cpp_lib_interpolate != 201902L
-# error "Feature-test macro for midpoint and lerp has wrong value"
+# error "Feature-test macro for midpoint and lerp has wrong value in <numeric>"
#endif
#include <climits>
--- /dev/null
+// { dg-options "-std=gnu++2a" }
+// { dg-do preprocess { target c++2a } }
+
+#include <version>
+
+#ifndef __cpp_lib_interpolate
+# error "Feature-test macro for midpoint and lerp missing in <version>"
+#elif __cpp_lib_interpolate != 201902L
+# error "Feature-test macro for midpoint and lerp has wrong value in <version>"
+#endif