From 75fd4ecf54e1c0f06cfd9a5d32dad604ad053102 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Wed, 22 May 2024 01:21:10 +0300
Subject: [PATCH] =?UTF-8?q?mdbx-testing:=20=D0=BA=D0=BE=D1=81=D1=82=D1=8B?=
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---
 test/chrono.c++ | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/chrono.c++ b/test/chrono.c++
index 2099b105..6c2895f1 100644
--- a/test/chrono.c++
+++ b/test/chrono.c++
@@ -42,7 +42,16 @@ uint32_t us2fractional(uint32_t us) {
 }
 
 uint32_t fractional2us(uint32_t fractional) {
+#if !(defined(_M_ARM) || defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64))
+  /* Смеяться или плакать, но все существующие на май 2024 компиляторы Microsoft
+   * для ARM/ARM64, уже порядка 10 лет, падают на этом коде из-за внтутренней
+   * ошибке (aka ICE). */
   return uint32_t((fractional * uint64_t(USEC_PER_SEC)) >> 32);
+#else
+  static_assert(USEC_PER_SEC % 16 == 0, "WTF?");
+  /* Crutch for MSVC ARM/ARM64 compilers to avoid internal compiler error. */
+  return UInt32x32To64(fractional, USEC_PER_SEC / 16) >> 28;
+#endif
 }
 
 #ifndef MSEC_PER_SEC