From e3fe559f0d08e246475a75ccca0433a2263ceb1d Mon Sep 17 00:00:00 2001
From: Sebastian <versat@users.noreply.github.com>
Date: Tue, 15 Oct 2019 16:02:28 +0200
Subject: [PATCH] windows.cfg: Add support for `__alignof()` (#2271)

Reference:
https://docs.microsoft.com/en-us/cpp/cpp/alignof-operator?view=vs-2019
---
 cfg/windows.cfg      | 9 +++++++++
 test/cfg/windows.cpp | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index 2ca20db64..2230f80dc 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -6338,6 +6338,15 @@ HFONT CreateFont(
       <not-bool/>
     </arg>
   </function>
+  <!-- __alignof Operator, declaration could look like this: size_t __alignof(type); -->
+  <!-- _alignof is a synonym -->
+  <function name="__alignof,_alignof">
+    <noreturn>false</noreturn>
+    <returnValue type="size_t"/>
+    <use-retval/>
+    <leak-ignore/>
+    <arg nr="1" direction="in"/>
+  </function>
   <podtype name="POINTER_SIGNED" sign="s"/>
   <podtype name="POINTER_UNSIGNED" sign="u"/>
   <podtype name="__time32_t" sign="s" size="4"/>
diff --git a/test/cfg/windows.cpp b/test/cfg/windows.cpp
index d2a82e6ac..2affba1f6 100644
--- a/test/cfg/windows.cpp
+++ b/test/cfg/windows.cpp
@@ -192,6 +192,9 @@ void validCode()
 
     ::PostMessage(nullptr, WM_QUIT, 0, 0);
 
+    printf("%zu", __alignof(int));
+    printf("%zu", _alignof(double));
+
     // Valid Library usage, no leaks, valid arguments
     HINSTANCE hInstLib = LoadLibrary(L"My.dll");
     FreeLibrary(hInstLib);