Load Standalone GC correctly in component scenarios. (#120236)

github-actions[bot] · AaronRobinsonMSFT · web-flow · commit 769024558f1f · 2025-10-03T16:29:51.000-07:00
Co-authored-by: Aaron R Robinson &lt;arobins@microsoft.com&gt;
diff --git a/src/coreclr/vm/gcheaputilities.cpp b/src/coreclr/vm/gcheaputilities.cpp
@@ -186,8 +186,12 @@ HMODULE LoadStandaloneGc(LPCWSTR libFileName, LPCWSTR libFilePath)
         return nullptr;
     }
 
+    // The APP_CONTEXT_BASE_DIRECTORY is always set by the host. In cases
+    // where the runtime is activated as a component, the base directory
+    // will be an empty string. If the base directory is an empty string, skip it.
     SString appBase;
-    if (HostInformation::GetProperty("APP_CONTEXT_BASE_DIRECTORY", appBase))
+    if (HostInformation::GetProperty("APP_CONTEXT_BASE_DIRECTORY", appBase)
+        && u16_strlen(appBase.GetUnicode()) != 0)
     {
         PathString libPath = appBase.GetUnicode();
         libPath.Append(libFileName);

Original file line number	Diff line number	Diff line change
`@@ -186,8 +186,12 @@ HMODULE LoadStandaloneGc(LPCWSTR libFileName, LPCWSTR libFilePath)`
`186`	`186`	`return nullptr;`
`187`	`187`	`}`
`188`	`188`
	`189`	`+ // The APP_CONTEXT_BASE_DIRECTORY is always set by the host. In cases`
	`190`	`+ // where the runtime is activated as a component, the base directory`
	`191`	`+ // will be an empty string. If the base directory is an empty string, skip it.`
`189`	`192`	`SString appBase;`
`190`		`- if (HostInformation::GetProperty("APP_CONTEXT_BASE_DIRECTORY", appBase))`
	`193`	`+ if (HostInformation::GetProperty("APP_CONTEXT_BASE_DIRECTORY", appBase)`
	`194`	`+ && u16_strlen(appBase.GetUnicode()) != 0)`
`191`	`195`	`{`
`192`	`196`	`PathString libPath = appBase.GetUnicode();`
`193`	`197`	`libPath.Append(libFileName);`