Modify zaprequire switch to allow Ready-to-Run images

Address issue dotnet/coreclr#3527.

Commit migrated from https://github.com/dotnet/coreclr/commit/a6de1e4296cb486bdb41724e4734faace158319e

diff --git a/src/coreclr/src/vm/domainfile.cpp b/src/coreclr/src/vm/domainfile.cpp
index 4285024..0c6e4fc 100644 (file)
--- a/src/coreclr/src/vm/domainfile.cpp
+++ b/src/coreclr/src/vm/domainfile.cpp
@@ -943,6 +943,11 @@ void DomainFile::CheckZapRequired()
     if (m_pFile->HasNativeImage() || !IsZapRequired())
         return;
 
+#ifdef FEATURE_READYTORUN
+    if(m_pFile->GetLoaded()->HasReadyToRunHeader())
+        return;
+#endif
+
     // Flush any log messages
     GetFile()->FlushExternalLog();