Force LinkEntity to be zero-initialized to avoid use-of-uninitialized-value problems.

allevato · allevato · commit 52e216e6ebad · 2023-08-02T15:43:15.000-04:00
diff --git a/include/swift/IRGen/Linking.h b/include/swift/IRGen/Linking.h
@@ -680,7 +680,7 @@ class LinkEntity {
     Data = LINKENTITY_SET_FIELD(Kind, unsigned(kind));
   }
 
-  LinkEntity() = default;
+  LinkEntity() : Pointer(nullptr), SecondaryPointer(nullptr), Data(0) {}
 
   static bool isValidResilientMethodRef(SILDeclRef declRef) {
     if (declRef.isForeign)

Original file line number	Diff line number	Diff line change
`@@ -680,7 +680,7 @@ class LinkEntity {`
`680`	`680`	`Data = LINKENTITY_SET_FIELD(Kind, unsigned(kind));`
`681`	`681`	`}`
`682`	`682`
`683`		`- LinkEntity() = default;`
	`683`	`+ LinkEntity() : Pointer(nullptr), SecondaryPointer(nullptr), Data(0) {}`
`684`	`684`
`685`	`685`	`static bool isValidResilientMethodRef(SILDeclRef declRef) {`
`686`	`686`	`if (declRef.isForeign)`