Set a bit in IMAGE_INFO to indicate that we don't contain any
@synthesized ivars for superclasses.
- <rdar://problem/6806371> [clang] Mark code without miscompiled
@synthesized properties
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69581 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 0c7b6f6..b95e67e 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -2426,9 +2426,15 @@
/// unsigned flags;
/// };
enum ImageInfoFlags {
- eImageInfo_FixAndContinue = (1 << 0), // FIXME: Not sure what this implies
- eImageInfo_GarbageCollected = (1 << 1),
- eImageInfo_GCOnly = (1 << 2)
+ eImageInfo_FixAndContinue = (1 << 0), // FIXME: Not sure what
+ // this implies.
+ eImageInfo_GarbageCollected = (1 << 1),
+ eImageInfo_GCOnly = (1 << 2),
+ eImageInfo_OptimizedByDyld = (1 << 3), // FIXME: When is this set.
+
+ // A flag indicating that the module has no instances of an
+ // @synthesize of a superclass variable. <rdar://problem/6803242>
+ eImageInfo_CorrectedSynthesize = (1 << 4)
};
void CGObjCMac::EmitImageInfo() {
@@ -2440,6 +2446,9 @@
flags |= eImageInfo_GarbageCollected;
if (CGM.getLangOptions().getGCMode() == LangOptions::GCOnly)
flags |= eImageInfo_GCOnly;
+
+ // We never allow @synthesize of a superclass property.
+ flags |= eImageInfo_CorrectedSynthesize;
// Emitted as int[2];
llvm::Constant *values[2] = {