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[OpenCL] Produce an error, instead of a warning, for sizeof(void) in OpenCL. 

Patch by joey.gouly@arm.com


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198264 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joey Gouly 2013-12-31 15:47:49 +00:00
parent 28010ae796
commit f1c0e48372
3 changed files with 12 additions and 2 deletions
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2
include/clang/Basic/DiagnosticSemaKinds.td
View File

@ -4243,6 +4243,8 @@ def ext_sizeof_alignof_function_type : Extension<
def ext_sizeof_alignof_void_type : Extension<
"invalid application of '%select{sizeof|alignof|vec_step}0' to a void "
"type">, InGroup<PointerArith>;
def err_opencl_sizeof_alignof_type : Error<
"invalid application of '%select{sizeof|alignof|vec_step}0' to a void type">;
def err_sizeof_alignof_incomplete_type : Error<
"invalid application of '%select{sizeof|alignof|vec_step}0' to an "
"incomplete type %1">;

7
lib/Sema/SemaExpr.cpp
View File

@ -3244,9 +3244,12 @@ static bool CheckExtensionTraitOperandType(Sema &S, QualType T,
return false;
}
// Allow sizeof(void)/alignof(void) as an extension.
// Allow sizeof(void)/alignof(void) as an extension, unless in OpenCL where
// this is an error (OpenCL v1.1 s6.3.k)
if (T->isVoidType()) {
S.Diag(Loc, diag::ext_sizeof_alignof_void_type) << TraitKind << ArgRange;
unsigned DiagID = S.LangOpts.OpenCL ? diag::err_opencl_sizeof_alignof_type
: diag::ext_sizeof_alignof_void_type;
S.Diag(Loc, DiagID) << TraitKind << ArgRange;
return false;
}

5
test/SemaOpenCL/sizeof.cl Normal file
View File

@ -0,0 +1,5 @@
// RUN: %clang_cc1 %s -verify -fsyntax-only
kernel void test(global int* buf) {
buf[0] = sizeof(void); // expected-error {{invalid application of 'sizeof' to a void type}}
}