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When reference binding array rvalues, such as those created by compound 

literals of array type, materialise a temporary.

llvm-svn: 144483
This commit is contained in:
Peter Collingbourne 2011-11-13 00:51:30 +00:00
parent 38b3f312ca
commit fcc764d140
2 changed files with 13 additions and 1 deletions
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2
clang/lib/Sema/SemaInit.cpp
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@ -3187,7 +3187,7 @@ static void TryReferenceInitialization(Sema &S,
if (T1Quals != T2Quals)
Sequence.AddQualificationConversionStep(cv1T1, ValueKind);
Sequence.AddReferenceBindingStep(cv1T1,
/*bindingTemporary=*/(InitCategory.isPRValue() && !T2->isArrayType()));
/*bindingTemporary=*/InitCategory.isPRValue());
return;
}

12
clang/test/CodeGenCXX/compound-literals.cpp
View File

@ -25,3 +25,15 @@ int f() {
// CHECK-NEXT: ret i32 [[RESULT]]
return ((Y){17, "seventeen"}).i;
}
// CHECK: define i32 @_Z1gv()
int g() {
// CHECK: store [2 x i32]* %{{[a-z0-9.]+}}, [2 x i32]** [[V:%[a-z0-9.]+]]
const int (&v)[2] = (int [2]) {1,2};
// CHECK: [[A:%[a-z0-9.]+]] = load [2 x i32]** [[V]]
// CHECK-NEXT: [[A0ADDR:%[a-z0-9.]+]] = getelementptr inbounds [2 x i32]* [[A]], i32 0, {{.*}} 0
// CHECK-NEXT: [[A0:%[a-z0-9.]+]] = load i32* [[A0ADDR]]
// CHECK-NEXT: ret i32 [[A0]]
return v[0];
}