forked from OSchip/llvm-project
fcbe17c6be
ObjC and ObjC++ pass non-trivial structs in a way that is incompatible
with each other. For example:
typedef struct {
id f0;
__weak id f1;
} S;
// this code is compiled in c++.
extern "C" {
void foo(S s);
}
void caller() {
// the caller passes the parameter indirectly and destructs it.
foo(S());
}
// this function is compiled in c.
// 'a' is passed directly and is destructed in the callee.
void foo(S a) {
}
This patch fixes the incompatibility by passing and returning structs
with __strong or weak fields using the C ABI in C++ mode. __strong and
__weak fields in a struct do not cause the struct to be destructed in
the caller and __strong fields do not cause the struct to be passed
indirectly.
Also, this patch fixes the microsoft ABI bug mentioned here:
https://reviews.llvm.org/D41039?id=128767#inline-364710
rdar://problem/38887866
Differential Revision: https://reviews.llvm.org/D44908
llvm-svn: 328731
|
||
|---|---|---|
| .. | ||
| Targets | ||
| Attributes.cpp | ||
| Builtins.cpp | ||
| CMakeLists.txt | ||
| CharInfo.cpp | ||
| Cuda.cpp | ||
| Diagnostic.cpp | ||
| DiagnosticIDs.cpp | ||
| DiagnosticOptions.cpp | ||
| FileManager.cpp | ||
| FileSystemStatCache.cpp | ||
| IdentifierTable.cpp | ||
| LangOptions.cpp | ||
| MemoryBufferCache.cpp | ||
| Module.cpp | ||
| ObjCRuntime.cpp | ||
| OpenMPKinds.cpp | ||
| OperatorPrecedence.cpp | ||
| SanitizerBlacklist.cpp | ||
| SanitizerSpecialCaseList.cpp | ||
| Sanitizers.cpp | ||
| SourceLocation.cpp | ||
| SourceManager.cpp | ||
| TargetInfo.cpp | ||
| Targets.cpp | ||
| Targets.h | ||
| TokenKinds.cpp | ||
| Version.cpp | ||
| VersionTuple.cpp | ||
| VirtualFileSystem.cpp | ||
| Warnings.cpp | ||
| XRayLists.cpp | ||