[cfe-commits] r57841 - in /cfe/trunk: lib/AST/ASTContext.cpp lib/Sema/SemaExpr.cpp test/SemaObjC/comptypes-1.m test/SemaObjC/comptypes-7.m
Steve Naroff
snaroff at apple.com
Mon Oct 20 11:19:10 PDT 2008
Author: snaroff
Date: Mon Oct 20 13:19:10 2008
New Revision: 57841
URL: http://llvm.org/viewvc/llvm-project?rev=57841&view=rev
Log:
Sema::CheckCompareOperands() and ASTContext::mergeTypes(): Change handling of ObjC qualified id types to be consistent with gcc. This changes a handful of test case errors into warnings (diff will tell you which cases have changed).
Modified:
cfe/trunk/lib/AST/ASTContext.cpp
cfe/trunk/lib/Sema/SemaExpr.cpp
cfe/trunk/test/SemaObjC/comptypes-1.m
cfe/trunk/test/SemaObjC/comptypes-7.m
Modified: cfe/trunk/lib/AST/ASTContext.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ASTContext.cpp?rev=57841&r1=57840&r2=57841&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ASTContext.cpp (original)
+++ cfe/trunk/lib/AST/ASTContext.cpp Mon Oct 20 13:19:10 2008
@@ -2036,14 +2036,30 @@
if (LHSClass != RHSClass) {
// ID is compatible with all qualified id types.
if (LHS->isObjCQualifiedIdType()) {
- if (const PointerType *PT = RHS->getAsPointerType())
- if (isObjCIdType(PT->getPointeeType()))
+ if (const PointerType *PT = RHS->getAsPointerType()) {
+ QualType pType = PT->getPointeeType();
+ if (isObjCIdType(pType))
return LHS;
+ // FIXME: need to use ObjCQualifiedIdTypesAreCompatible(LHS, RHS, true).
+ // Unfortunately, this API is part of Sema (which we don't have access
+ // to. Need to refactor. The following check is insufficient, since we
+ // need to make sure the class implements the protocol.
+ if (pType->isObjCInterfaceType())
+ return LHS;
+ }
}
if (RHS->isObjCQualifiedIdType()) {
- if (const PointerType *PT = LHS->getAsPointerType())
- if (isObjCIdType(PT->getPointeeType()))
+ if (const PointerType *PT = LHS->getAsPointerType()) {
+ QualType pType = PT->getPointeeType();
+ if (isObjCIdType(pType))
+ return RHS;
+ // FIXME: need to use ObjCQualifiedIdTypesAreCompatible(LHS, RHS, true).
+ // Unfortunately, this API is part of Sema (which we don't have access
+ // to. Need to refactor. The following check is insufficient, since we
+ // need to make sure the class implements the protocol.
+ if (pType->isObjCInterfaceType())
return RHS;
+ }
}
// C99 6.7.2.2p4: Each enumerated type shall be compatible with char,
Modified: cfe/trunk/lib/Sema/SemaExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExpr.cpp?rev=57841&r1=57840&r2=57841&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaExpr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExpr.cpp Mon Oct 20 13:19:10 2008
@@ -2061,6 +2061,13 @@
}
if ((lType->isObjCQualifiedIdType() || rType->isObjCQualifiedIdType())) {
+ if ((lType->isPointerType() || rType->isPointerType()) &&
+ !Context.typesAreCompatible(lType, rType)) {
+ Diag(loc, diag::ext_typecheck_comparison_of_distinct_pointers,
+ lType.getAsString(), rType.getAsString(),
+ lex->getSourceRange(), rex->getSourceRange());
+ return QualType();
+ }
if (ObjCQualifiedIdTypesAreCompatible(lType, rType, true)) {
ImpCastExprToType(rex, lType);
return Context.IntTy;
Modified: cfe/trunk/test/SemaObjC/comptypes-1.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/comptypes-1.m?rev=57841&r1=57840&r2=57841&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjC/comptypes-1.m (original)
+++ cfe/trunk/test/SemaObjC/comptypes-1.m Mon Oct 20 13:19:10 2008
@@ -66,6 +66,8 @@
/* Any comparison between 'MyClass *' and anything which is not an 'id'
must generate a warning. */
+ /* FIXME: GCC considers this a warning ("comparison of distinct pointer types"). */
+ /* There is a corresponding FIXME in ASTContext::mergeTypes() */
if (obj_p == obj_c) foo() ; // expected-error {{invalid operands to binary expression ('id<MyProtocol>' and 'MyClass *')}}
if (obj_c == obj_cp) foo() ; // expected-warning {{comparison of distinct pointer types ('MyClass *' and 'MyOtherClass *')}}
@@ -80,8 +82,8 @@
if (obj_p == obj_cp) foo() ; /* Ok */
- if (obj_p == obj_C) foo() ; // expected-error {{invalid operands to binary expression ('id<MyProtocol>' and 'Class')}}
- if (obj_C == obj_p) foo() ; // expected-error {{invalid operands to binary expression ('Class' and 'id<MyProtocol>')}}
+ if (obj_p == obj_C) foo() ; // expected-warning {{comparison of distinct pointer types ('id<MyProtocol>' and 'Class')}}
+ if (obj_C == obj_p) foo() ; // expected-warning {{comparison of distinct pointer types ('Class' and 'id<MyProtocol>')}}
if (obj_cp == obj_C) foo() ; // expected-warning {{comparison of distinct pointer types ('MyOtherClass *' and 'Class')}}
if (obj_C == obj_cp) foo() ; // expected-warning {{comparison of distinct pointer types ('Class' and 'MyOtherClass *')}}
Modified: cfe/trunk/test/SemaObjC/comptypes-7.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/comptypes-7.m?rev=57841&r1=57840&r2=57841&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjC/comptypes-7.m (original)
+++ cfe/trunk/test/SemaObjC/comptypes-7.m Mon Oct 20 13:19:10 2008
@@ -58,8 +58,8 @@
if (obj_p == i) foo() ; // expected-warning {{comparison between pointer and integer ('id<MyProtocol>' and 'int')}}
if (i == obj_p) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'id<MyProtocol>')}}
- if (obj_p == j) foo() ; // expected-error {{invalid operands to binary expression ('id<MyProtocol>' and 'int *')}}
- if (j == obj_p) foo() ; // expected-error {{invalid operands to binary expression ('int *' and 'id<MyProtocol>')}}
+ if (obj_p == j) foo() ; // expected-warning {{comparison of distinct pointer types ('id<MyProtocol>' and 'int *')}}
+ if (j == obj_p) foo() ; // expected-warning {{comparison of distinct pointer types ('int *' and 'id<MyProtocol>')}}
if (obj_C == i) foo() ; // expected-warning {{comparison between pointer and integer ('Class' and 'int')}}
if (i == obj_C) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'Class')}}
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