James Y Knight ccc4d83cda [ObjC] Diagnose implicit type coercion from ObjC 'Class' to object ... pointer types. For example, in Objective-C mode, the initialization of 'x' in: ``` @implementation MyType + (void)someClassMethod { MyType *x = self; } @end ``` is correctly diagnosed with an incompatible-pointer-types warning, but in Objective-C++ mode, it is not diagnosed at all -- even though incompatible pointer conversions generally become an error in C++. This patch fixes that oversight, allowing implicit conversions involving Class only to/from unqualified-id, and between qualified and unqualified Class, where the protocols are compatible. Note that this does change some behaviors in Objective-C, as well, as shown by the modified tests. Of particular note is that assignment from from 'Class<MyProtocol>' to 'id<MyProtocol>' now warns. (Despite appearances, those are not compatible types. 'Class<MyProtocol>' is not expected to have instance methods defined by 'MyProtocol', while 'id<MyProtocol>' is.) Differential Revision: https://reviews.llvm.org/D67983 llvm-svn: 375125		2019-10-17 15:27:04 +00:00
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Inputs	[Sema][ObjC] Look for either objc_bridge or objc_bridge_mutable when	2017-10-24 23:38:14 +00:00
NSString-type.mm	…
abstract-class-type-ivar.mm	…
arc-0x.mm	[Sema][ObjC] Allow declaring ObjC pointer members with non-trivial	2019-02-02 02:23:40 +00:00
arc-bool-conversion.mm	…
arc-bridged-cast.mm	[Sema][ObjC] Check whether a variable has a definition, rather than	2017-04-11 22:01:33 +00:00
arc-libstdcxx.mm	…
arc-memfunc.mm	…
arc-nsconsumed-errors.mm	Improve some infrastructure for extended parameter infos and	2016-03-03 00:10:03 +00:00
arc-objc-lifetime.mm	…
arc-overloading.mm	Reusing an existing attribute diagnostic	2017-05-03 14:05:00 +00:00
arc-ppe.mm	…
arc-ptr-comparison.mm	[ARC][ObjC++] Use ObjC semantic rules for comparisons between a pointer and	2017-03-30 13:48:33 +00:00
arc-system-header.mm	[test] Make Lit tests C++11 Compatible - Objective-C++	2017-02-13 23:09:56 +00:00
arc-templates.mm	Print nested name specifiers for typedefs and type aliases	2017-03-10 15:04:58 +00:00
arc-type-conversion.mm	…
arc-type-traits.mm	…
arc-unavailable-for-weakref.mm	[Objective-C] Fix "weak-unavailable" warning with -fobjc-weak	2017-03-29 18:09:02 +00:00
arc-unbridged-cast.mm	…
argument-dependent-lookup.mm	…
attr-trivial-abi.mm	[Sema] Produce diagnostics for attribute 'trivial_abi' that appears	2018-06-19 05:04:44 +00:00
base-type-as-written.mm	[Sema] Remove assert in TreeTransform<Derived>::TransformObjCObjectType.	2016-02-25 07:08:33 +00:00
block-cleanup.mm	Re-commit r321223, which adds a printing policy to the ASTDumper.	2017-12-21 21:42:42 +00:00
block-for-lambda-conversion.mm	ObjCXX: fix a crash during typo correction.	2016-02-02 22:23:03 +00:00
block-variable-move.mm	[ObjC++] Don't warn about pessimizing move for __block variables	2017-11-07 21:40:11 +00:00
blocks.mm	Distinguish `__block` variables that are captured by escaping blocks	2018-10-01 21:51:28 +00:00
boxing-illegal-types.mm	…
capturing-flexible-array-in-block.mm	If capturing a variable fails, add a capture anyway (and mark it	2019-05-28 23:09:44 +00:00
category-lookup.mm	…
class-method-self.mm	[ObjC] Diagnose implicit type coercion from ObjC 'Class' to object	2019-10-17 15:27:04 +00:00
class-templ-error-null-init.mm	[Sema] Relax a failing assert in TemplateArgumentLoc	2018-07-31 00:18:30 +00:00
composite-objc-pointertype.mm	…
comptypes-1.mm	[ObjC] Diagnose implicit type coercion from ObjC 'Class' to object	2019-10-17 15:27:04 +00:00
comptypes-7.mm	[ObjC] Diagnose implicit type coercion from ObjC 'Class' to object	2019-10-17 15:27:04 +00:00
conditional-expr.mm	…
const-cast.mm	…
contextual-convert-to-id.mm	…
conversion-ranking.mm	…
conversion-to-objc-pointer-2.mm	…
conversion-to-objc-pointer.mm	…
crash.mm	[ObjC++] Don't enter a C++ declarator scope when the current context is	2016-12-07 10:24:44 +00:00
cstyle-block-pointer-cast.mm	…
cstyle-cast.mm	…
cxx1y-lambda.mm	…
cxxoperator-selector.mm	…
debugger-cast-result-to-id.mm	…
debugger-support.mm	…
decltype.mm	…
deduction.mm	…
delay-parsing-cfunctions.mm	…
delay-parsing-cplusfuncs.mm	…
delay-parsing-func-tryblock.mm	…
dllexport.mm	Sema: support __declspec(dll*) on ObjC interfaces	2016-07-15 20:41:10 +00:00
dllimport.mm	Sema: support __declspec(dll*) on ObjC interfaces	2016-07-15 20:41:10 +00:00
exceptions-fragile.mm	…
exceptions.mm	…
expr-objcxx.mm	…
flexible-array.mm	[Sema] Add support for flexible array members in Obj-C.	2017-10-23 22:01:41 +00:00
foreach-block.mm	…
foreach.mm	[cxx2a] P0614R1: Support init-statements in range-based for loops.	2018-09-28 18:44:09 +00:00
format-strings.mm	…
fragile-abi-object-assign.m	…
function-pointer-void-star.mm	…
gc-attributes.mm	Recommit r359859 "[Attribute/Diagnostics] Print macro if definition is an attribute declaration"	2019-05-07 03:20:17 +00:00
goto.mm	…
instancetype.mm	[ObjC] Diagnose implicit type coercion from ObjC 'Class' to object	2019-10-17 15:27:04 +00:00
instantiate-expr.mm	…
instantiate-message.mm	…
instantiate-method-return.mm	[Sema][ObjC] Ensure that the return type of an ObjC method is a complete	2018-04-12 06:01:41 +00:00
instantiate-property-access.mm	…
instantiate-stmt.mm	…
interface-return-type.mm	Fix errored return value in CheckFunctionReturnType and add a fixit hint	2017-05-10 20:03:16 +00:00
is-base-of.mm	[Sema] Objective-C++ support for type trait __is_base_of	2017-05-10 17:18:56 +00:00
ivar-construct.mm	[test] Make Lit tests C++11 Compatible - Objective-C++	2017-02-13 23:09:56 +00:00
ivar-lookup.mm	…
ivar-reference-type.mm	…
ivar-struct.mm	…
linkage-spec.mm	…
lit.local.cfg	…
literals.mm	[ObjC] Emit a boxed expression as a compile-time constant if the	2019-03-08 04:45:37 +00:00
message.mm	[c++20] Implement semantic restrictions for C++20 designated	2019-08-30 22:52:55 +00:00
microsoft-abi-byval.mm	…
missing-lhs-gun-extension.mm	…
namespace-lookup.mm	…
no-crash-thread-safety-analysis.mm	Thread Safety: also look at ObjC methods	2019-03-25 20:06:32 +00:00
noescape.mm	Distinguish `__block` variables that are captured by escaping blocks	2018-10-01 21:51:28 +00:00
null_objc_pointer.mm	DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.	2016-10-21 22:00:42 +00:00
nullability-completeness-cferror.mm	[Sema][ObjC] Look for either objc_bridge or objc_bridge_mutable when	2017-10-24 23:38:14 +00:00
nullability-consistency-arrays.mm	Warn when 'assume_nonnull' infers nullability within an array.	2016-11-10 23:28:30 +00:00
nullability-consistency.mm	…
nullability-pragmas.mm	…
nullptr.mm	…
objc-boxed-expressions-nsvalue.mm	…
objc-container-subscripting.mm	…
objc-decls-inside-namespace.mm	…
objc-extern-c.mm	…
objc-pointer-conv.mm	…
objc-weak-type-traits.mm	[Objective-C] Fix __weak type traits with -fobjc-weak	2017-03-29 17:40:35 +00:00
objc-weak.mm	[Sema][ObjC] Allow declaring ObjC pointer members with non-trivial	2019-02-02 02:23:40 +00:00
objc2-merge-gc-attribue-decl.mm	…
objcbridge-attribute-arc.mm	…
objcbridge-attribute.mm	…
objcbridge-related-attribute.mm	…
objcbridge-static-cast.mm	…
old-style-cast.mm	…
overload-gc.mm	…
overload.mm	[Sema] Deduplicate some availability checking logic	2019-03-20 19:26:33 +00:00
parameterized_classes.mm	…
parameterized_classes_arc.mm	…
parameterized_classes_subst.mm	Improve diagnostics and error recovery for template name lookup.	2018-05-11 02:43:08 +00:00
parameters.mm	…
pointer-to-objc-pointer-conv.mm	…
pr32725.mm	Sema: protect against ObjC++ typo-correction failure	2017-04-20 22:23:10 +00:00
propert-dot-error.mm	…
properties.mm	…
property-invalid-type.mm	Stop back-patching 'readonly' Objective-C properties with 'readwrite' ones.	2015-11-03 01:15:46 +00:00
property-reference.mm	…
property-synthesis-error.mm	…
property-type-mismatch.mm	Objective-C properties: fix bogus use of "isa<>" on a QualType.	2015-12-08 22:45:17 +00:00
protocol-lookup.mm	…
pseudo-destructor.mm	Allow pseudo-destructor calls on forward-declared Objective-C class pointers.	2015-12-14 19:12:54 +00:00
references.mm	…
reinterpret-cast-objc-pointertype.mm	…
related-result-type-inference.mm	…
reserved-keyword-methods.mm	…
sel-address.mm	…
standard-conversion-to-bool.mm	…
static-cast.mm	…
synchronized.mm	…
thread-safety-analysis.h	Thread Safety: also look at ObjC methods	2019-03-25 20:06:32 +00:00
typeloc-data-alignment.mm	[Sema] Fix bug in TypeLocBuilder::pushImpl	2016-02-18 21:05:09 +00:00
typo-correction.mm	Typo correct the condition of 'do-while' before exiting its scope	2017-10-30 22:55:11 +00:00
unknown-anytype.mm	…
vararg-non-pod.mm	expected-no-diagnostics@ does not make sense, switching to a more idiomatic form; NFC.	2019-03-07 15:03:06 +00:00
vla.mm	…
void_to_obj.mm	…
warn-implicit-self-in-block.mm	[Sema][ObjC] Don't warn about an implicitly retained self if the	2019-04-17 23:14:44 +00:00
warn-missing-super.mm	…
warn-objc-literal-conversion.mm	…
warn-strict-selector-match.mm	…
warn-thread-safety-analysis.mm	Thread Safety: also look at ObjC methods	2019-03-25 20:06:32 +00:00