add comment explaining ignore android

diff --git a/src/test/run-pass/simd-intrinsic-float-math.rs b/src/test/run-pass/simd-intrinsic-float-math.rs
index 70f5a01e323ccd9f0933e6ffe05eddbe5f87d0e3..4597674b3f1d2d953be005d90714813ac3e74379 100644 (file)
--- a/src/test/run-pass/simd-intrinsic-float-math.rs
+++ b/src/test/run-pass/simd-intrinsic-float-math.rs
@@ -11,6 +11,10 @@
 // ignore-emscripten
 // ignore-android
 
+// FIXME: this test fails on arm-android because the NDK version 14 is too old.
+// It needs at least version 18. We disable it on all android build bots because
+// there is no way in compile-test to disable it for an (arch,os) pair.
+
 // Test that the simd floating-point math intrinsics produce correct results.
 
 #![feature(repr_simd, platform_intrinsics)]