--- flac-static-1.5.0.orig/src/libFLAC/window.c
+++ flac-static-1.5.0/src/libFLAC/window.c
@@ -178,6 +178,10 @@ void FLAC__window_rectangle(FLAC__real *
 		window[n] = 1.0f;
 }
 
+#ifdef __arm__
+/* workaround compiler bug */
+__attribute__((optimize(1)))
+#endif
 void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L)
 {
 	FLAC__int32 n;