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Don't allow taking the address of an element in an ext_vector 

llvm-svn: 64614
This commit is contained in:
Nate Begeman 2009-02-15 22:45:20 +00:00
parent 4576b2eebd
commit a6b47a4142
2 changed files with 9 additions and 4 deletions
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6
clang/lib/Sema/SemaExpr.cpp
View File

@ -3485,10 +3485,10 @@ QualType Sema::CheckAddressOfOperand(Expr *op, SourceLocation OpLoc) {
}
}
// Check for Apple extension for accessing vector components.
} else if (isa<ArraySubscriptExpr>(op) &&
cast<ArraySubscriptExpr>(op)->getBase()->getType()->isVectorType()) {
} else if (isa<ExtVectorElementExpr>(op) || (isa<ArraySubscriptExpr>(op) &&
cast<ArraySubscriptExpr>(op)->getBase()->getType()->isVectorType())){
Diag(OpLoc, diag::err_typecheck_address_of)
<< "vector" << op->getSourceRange();
<< "vector element" << op->getSourceRange();
return QualType();
} else if (dcl) { // C99 6.5.3.2p1
// We have an lvalue with a decl. Make sure the decl is not declared

7
clang/test/Sema/expr-address-of.c
View File

@ -28,9 +28,14 @@ void foo() {
void testVectorComponentAccess() {
typedef float v4sf __attribute__ ((vector_size (16)));
static v4sf q;
float* r = &q[0]; // expected-error {{address of vector requested}}
float* r = &q[0]; // expected-error {{address of vector element requested}}
}
typedef __attribute__(( ext_vector_type(4) )) float float4;
float *testExtVectorComponentAccess(float4 x) {
return &x.w; // expected-error {{address of vector element requested}}
}
void f0() {
register int *x0;