[Patch 2/7] MdePkg/Include/Library: Undefine _ASSERT() if already defined

["Michael D Kinney" <michael.d.kinney@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4134

When unit testing is enabled, make sure _ASSERT() is not already
defined by the host environment before defining _ASSERT().  This
avoids conflicts with VS20xx builds of GoogleTest based unit tests.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
---
 MdePkg/Include/Library/DebugLib.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MdePkg/Include/Library/DebugLib.h b/MdePkg/Include/Library/DebugLib.h
index 8d3d08638d73..9110be2f41b3 100644
--- a/MdePkg/Include/Library/DebugLib.h
+++ b/MdePkg/Include/Library/DebugLib.h
@@ -337,6 +337,9 @@ UnitTestDebugAssert (
   IN CONST CHAR8  *Description
   );
 
+  #if defined (_ASSERT)
+    #undef _ASSERT
+  #endif
   #if defined (__clang__) && defined (__FILE_NAME__)
 #define _ASSERT(Expression)  UnitTestDebugAssert (__FILE_NAME__, DEBUG_LINE_NUMBER, DEBUG_EXPRESSION_STRING (Expression))
   #else
-- 
2.37.1.windows.1