r247618 - C11 _Bool bitfield diagnostic
Richard Smith via cfe-commits
cfe-commits at lists.llvm.org
Mon Sep 14 18:42:15 PDT 2015
On Mon, Sep 14, 2015 at 6:10 PM, David Majnemer <david.majnemer at gmail.com>
wrote:
> On Mon, Sep 14, 2015 at 6:01 PM, Richard Smith <richard at metafoo.co.uk>
> wrote:
>
>> On Mon, Sep 14, 2015 at 5:55 PM, David Majnemer <david.majnemer at gmail.com
>> > wrote:
>>
>>> On Mon, Sep 14, 2015 at 5:40 PM, Richard Smith <richard at metafoo.co.uk>
>>> wrote:
>>>
>>>> On Mon, Sep 14, 2015 at 5:31 PM, David Majnemer <
>>>> david.majnemer at gmail.com> wrote:
>>>>
>>>>> On Mon, Sep 14, 2015 at 5:28 PM, Richard Smith via cfe-commits <
>>>>> cfe-commits at lists.llvm.org> wrote:
>>>>>
>>>>>> On Mon, Sep 14, 2015 at 5:18 PM, Nico Weber via cfe-commits <
>>>>>> cfe-commits at lists.llvm.org> wrote:
>>>>>>
>>>>>>> This also fires for bool in C++ files, even though the commit
>>>>>>> message saying C11 and _Bool. Given the test changes, I suppose that's
>>>>>>> intentional? This fires a lot on existing code, for example protobuf:
>>>>>>>
>>>>>>> ../../third_party/protobuf/src/google/protobuf/extension_set.h:465:10:
>>>>>>> error: width of bit-field 'is_cleared' (4 bits) exceeds the width of its
>>>>>>> type; value will be truncated to 1 bit [-Werror,-Wbitfield-width]
>>>>>>> bool is_cleared : 4;
>>>>>>> ^
>>>>>>> ../../third_party/protobuf/src/google/protobuf/extension_set.h:472:10:
>>>>>>> error: width of bit-field 'is_lazy' (4 bits) exceeds the width of its type;
>>>>>>> value will be truncated to 1 bit [-Werror,-Wbitfield-width]
>>>>>>> bool is_lazy : 4;
>>>>>>> ^
>>>>>>>
>>>>>>> Is this expected? Is this a behavior change, or did the truncation
>>>>>>> happen previously and it's now just getting warned on?
>>>>>>>
>>>>>>
>>>>>> The code previously assumed that MSVC used the C rules here; it
>>>>>> appears that's not true in all cases.
>>>>>>
>>>>>> Can we just remove the " || IsMsStruct || Context.getTargetInfo().getCXXABI().isMicrosoft()"?
>>>>>> Is there some reason we need to prohibit overwide bitfields for MS bitfield
>>>>>> layout, rather than just warning on them? (Does record layout fail somehow?)
>>>>>>
>>>>>
>>>>> Record layout will fail for stuff like 'int x : 33' but will not fail
>>>>> for stuff like '{bool,_Bool} y : 2'; the bitfield layout algorithm cares
>>>>> about the storage size (which, of course, includes padding). This patch
>>>>> makes 'bool y : 2' an error which is a behavior change, I'm working on
>>>>> patch to address this.
>>>>>
>>>>
>>>> Do we need to be compatible with this MSVC bug? It would seem feasible
>>>> to teach our MS record layout to do the right thing with over-wide
>>>> bitfields and downgrade this to the normal warning in C++.
>>>>
>>>
>>> It is possible to add support for over-wide bitfields but this is not
>>> completely trivial. There is a fair amount of code in Clang which deals
>>> with emission of bitfields (RecordLayoutBuilder,
>>> CGRecordLayoutBuilder, ConstStructBuilder) and I don't think I have the
>>> bandwidth to audit the impact of such a change right now.
>>>
>>
>> This all already works for Itanium record layout, so presumably only the
>> MS-layout-specific side would need to be implemented?
>>
>
> Bitfield management extends beyond ASTRecordLayout,
> CGRecordLowering::accumulateBitFIelds is entirely different when
> CGRecordLowering::isDiscreteBitFieldABI() is true.
>
OK, it sounds like that change would be more trouble than it's worth for
now.
> On Mon, Sep 14, 2015 at 2:27 PM, Rachel Craik via cfe-commits <
>>>>>>> cfe-commits at lists.llvm.org> wrote:
>>>>>>>
>>>>>>>> Author: rcraik
>>>>>>>> Date: Mon Sep 14 16:27:36 2015
>>>>>>>> New Revision: 247618
>>>>>>>>
>>>>>>>> URL: http://llvm.org/viewvc/llvm-project?rev=247618&view=rev
>>>>>>>> Log:
>>>>>>>> C11 _Bool bitfield diagnostic
>>>>>>>>
>>>>>>>> Summary: Implement DR262 (for C). This patch will mainly affect
>>>>>>>> bitfields of type _Bool
>>>>>>>>
>>>>>>>> Reviewers: fraggamuffin, rsmith
>>>>>>>>
>>>>>>>> Subscribers: hubert.reinterpretcast, cfe-commits
>>>>>>>>
>>>>>>>> Differential Revision: http://reviews.llvm.org/D10018
>>>>>>>>
>>>>>>>> Modified:
>>>>>>>> cfe/trunk/include/clang/Basic/DiagnosticGroups.td
>>>>>>>> cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
>>>>>>>> cfe/trunk/lib/Sema/SemaDecl.cpp
>>>>>>>> cfe/trunk/test/CodeGen/bitfield-2.c
>>>>>>>> cfe/trunk/test/CodeGenCXX/warn-padded-packed.cpp
>>>>>>>> cfe/trunk/test/Misc/warning-flags.c
>>>>>>>> cfe/trunk/test/Sema/bitfield.c
>>>>>>>> cfe/trunk/test/SemaCXX/bitfield-layout.cpp
>>>>>>>> cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp
>>>>>>>> cfe/trunk/test/SemaCXX/constant-expression-cxx1y.cpp
>>>>>>>> cfe/trunk/test/SemaCXX/ms_wide_bitfield.cpp
>>>>>>>> cfe/trunk/test/SemaObjC/class-bitfield.m
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/include/clang/Basic/DiagnosticGroups.td
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticGroups.td?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/include/clang/Basic/DiagnosticGroups.td (original)
>>>>>>>> +++ cfe/trunk/include/clang/Basic/DiagnosticGroups.td Mon Sep 14
>>>>>>>> 16:27:36 2015
>>>>>>>> @@ -32,6 +32,7 @@ def AutoImport : DiagGroup<"auto-import"
>>>>>>>> def GNUBinaryLiteral : DiagGroup<"gnu-binary-literal">;
>>>>>>>> def GNUCompoundLiteralInitializer :
>>>>>>>> DiagGroup<"gnu-compound-literal-initializer">;
>>>>>>>> def BitFieldConstantConversion :
>>>>>>>> DiagGroup<"bitfield-constant-conversion">;
>>>>>>>> +def BitFieldWidth : DiagGroup<"bitfield-width">;
>>>>>>>> def ConstantConversion :
>>>>>>>> DiagGroup<"constant-conversion", [ BitFieldConstantConversion ]
>>>>>>>> >;
>>>>>>>> def LiteralConversion : DiagGroup<"literal-conversion">;
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
>>>>>>>> +++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Mon Sep 14
>>>>>>>> 16:27:36 2015
>>>>>>>> @@ -4314,20 +4314,21 @@ def err_bitfield_has_negative_width : Er
>>>>>>>> def err_anon_bitfield_has_negative_width : Error<
>>>>>>>> "anonymous bit-field has negative width (%0)">;
>>>>>>>> def err_bitfield_has_zero_width : Error<"named bit-field %0 has
>>>>>>>> zero width">;
>>>>>>>> -def err_bitfield_width_exceeds_type_size : Error<
>>>>>>>> - "size of bit-field %0 (%1 bits) exceeds size of its type (%2
>>>>>>>> bits)">;
>>>>>>>> -def err_anon_bitfield_width_exceeds_type_size : Error<
>>>>>>>> - "size of anonymous bit-field (%0 bits) exceeds size of its type
>>>>>>>> (%1 bits)">;
>>>>>>>> +def err_bitfield_width_exceeds_type_width : Error<
>>>>>>>> + "width of bit-field %0 (%1 bits) exceeds width of its type (%2
>>>>>>>> bit%s2)">;
>>>>>>>> +def err_anon_bitfield_width_exceeds_type_width : Error<
>>>>>>>> + "width of anonymous bit-field (%0 bits) exceeds width of its
>>>>>>>> type "
>>>>>>>> + "(%1 bit%s1)">;
>>>>>>>> def err_incorrect_number_of_vector_initializers : Error<
>>>>>>>> "number of elements must be either one or match the size of the
>>>>>>>> vector">;
>>>>>>>>
>>>>>>>> // Used by C++ which allows bit-fields that are wider than the
>>>>>>>> type.
>>>>>>>> -def warn_bitfield_width_exceeds_type_size: Warning<
>>>>>>>> - "size of bit-field %0 (%1 bits) exceeds the size of its type;
>>>>>>>> value will be "
>>>>>>>> - "truncated to %2 bits">;
>>>>>>>> -def warn_anon_bitfield_width_exceeds_type_size : Warning<
>>>>>>>> - "size of anonymous bit-field (%0 bits) exceeds size of its type;
>>>>>>>> value will "
>>>>>>>> - "be truncated to %1 bits">;
>>>>>>>> +def warn_bitfield_width_exceeds_type_width: Warning<
>>>>>>>> + "width of bit-field %0 (%1 bits) exceeds the width of its type;
>>>>>>>> value will "
>>>>>>>> + "be truncated to %2 bit%s2">, InGroup<BitFieldWidth>;
>>>>>>>> +def warn_anon_bitfield_width_exceeds_type_width : Warning<
>>>>>>>> + "width of anonymous bit-field (%0 bits) exceeds width of its
>>>>>>>> type; value "
>>>>>>>> + "will be truncated to %1 bit%s1">, InGroup<BitFieldWidth>;
>>>>>>>>
>>>>>>>> def warn_missing_braces : Warning<
>>>>>>>> "suggest braces around initialization of subobject">,
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
>>>>>>>> +++ cfe/trunk/lib/Sema/SemaDecl.cpp Mon Sep 14 16:27:36 2015
>>>>>>>> @@ -12625,26 +12625,26 @@ ExprResult Sema::VerifyBitField(SourceLo
>>>>>>>> }
>>>>>>>>
>>>>>>>> if (!FieldTy->isDependentType()) {
>>>>>>>> - uint64_t TypeSize = Context.getTypeSize(FieldTy);
>>>>>>>> - if (Value.getZExtValue() > TypeSize) {
>>>>>>>> + uint64_t TypeWidth = Context.getIntWidth(FieldTy);
>>>>>>>> + if (Value.ugt(TypeWidth)) {
>>>>>>>> if (!getLangOpts().CPlusPlus || IsMsStruct ||
>>>>>>>> Context.getTargetInfo().getCXXABI().isMicrosoft()) {
>>>>>>>> if (FieldName)
>>>>>>>> - return Diag(FieldLoc,
>>>>>>>> diag::err_bitfield_width_exceeds_type_size)
>>>>>>>> + return Diag(FieldLoc,
>>>>>>>> diag::err_bitfield_width_exceeds_type_width)
>>>>>>>> << FieldName << (unsigned)Value.getZExtValue()
>>>>>>>> - << (unsigned)TypeSize;
>>>>>>>> + << (unsigned)TypeWidth;
>>>>>>>>
>>>>>>>> - return Diag(FieldLoc,
>>>>>>>> diag::err_anon_bitfield_width_exceeds_type_size)
>>>>>>>> - << (unsigned)Value.getZExtValue() << (unsigned)TypeSize;
>>>>>>>> + return Diag(FieldLoc,
>>>>>>>> diag::err_anon_bitfield_width_exceeds_type_width)
>>>>>>>> + << (unsigned)Value.getZExtValue() << (unsigned)TypeWidth;
>>>>>>>> }
>>>>>>>>
>>>>>>>> if (FieldName)
>>>>>>>> - Diag(FieldLoc, diag::warn_bitfield_width_exceeds_type_size)
>>>>>>>> + Diag(FieldLoc,
>>>>>>>> diag::warn_bitfield_width_exceeds_type_width)
>>>>>>>> << FieldName << (unsigned)Value.getZExtValue()
>>>>>>>> - << (unsigned)TypeSize;
>>>>>>>> + << (unsigned)TypeWidth;
>>>>>>>> else
>>>>>>>> - Diag(FieldLoc,
>>>>>>>> diag::warn_anon_bitfield_width_exceeds_type_size)
>>>>>>>> - << (unsigned)Value.getZExtValue() << (unsigned)TypeSize;
>>>>>>>> + Diag(FieldLoc,
>>>>>>>> diag::warn_anon_bitfield_width_exceeds_type_width)
>>>>>>>> + << (unsigned)Value.getZExtValue() << (unsigned)TypeWidth;
>>>>>>>> }
>>>>>>>> }
>>>>>>>>
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/CodeGen/bitfield-2.c
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/bitfield-2.c?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/CodeGen/bitfield-2.c (original)
>>>>>>>> +++ cfe/trunk/test/CodeGen/bitfield-2.c Mon Sep 14 16:27:36 2015
>>>>>>>> @@ -237,7 +237,7 @@ unsigned long long test_5() {
>>>>>>>> /***/
>>>>>>>>
>>>>>>>> struct s6 {
>>>>>>>> - _Bool f0 : 2;
>>>>>>>> + unsigned f0 : 2;
>>>>>>>> };
>>>>>>>>
>>>>>>>> struct s6 g6 = { 0xF };
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/CodeGenCXX/warn-padded-packed.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/warn-padded-packed.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/CodeGenCXX/warn-padded-packed.cpp (original)
>>>>>>>> +++ cfe/trunk/test/CodeGenCXX/warn-padded-packed.cpp Mon Sep 14
>>>>>>>> 16:27:36 2015
>>>>>>>> @@ -69,7 +69,7 @@ struct S12 {
>>>>>>>>
>>>>>>>> struct S13 { // expected-warning {{padding size of 'S13' with 6
>>>>>>>> bits to alignment boundary}}
>>>>>>>> char c;
>>>>>>>> - bool b : 10; // expected-warning {{size of bit-field 'b' (10
>>>>>>>> bits) exceeds the size of its type}}
>>>>>>>> + bool b : 10; // expected-warning {{width of bit-field 'b' (10
>>>>>>>> bits) exceeds the width of its type}}
>>>>>>>> };
>>>>>>>>
>>>>>>>> // The warnings are emitted when the layout of the structs is
>>>>>>>> computed, so we have to use them.
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/Misc/warning-flags.c
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Misc/warning-flags.c?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/Misc/warning-flags.c (original)
>>>>>>>> +++ cfe/trunk/test/Misc/warning-flags.c Mon Sep 14 16:27:36 2015
>>>>>>>> @@ -18,7 +18,7 @@ This test serves two purposes:
>>>>>>>>
>>>>>>>> The list of warnings below should NEVER grow. It should gradually
>>>>>>>> shrink to 0.
>>>>>>>>
>>>>>>>> -CHECK: Warnings without flags (92):
>>>>>>>> +CHECK: Warnings without flags (90):
>>>>>>>> CHECK-NEXT: ext_excess_initializers
>>>>>>>> CHECK-NEXT: ext_excess_initializers_in_char_array_initializer
>>>>>>>> CHECK-NEXT: ext_expected_semi_decl_list
>>>>>>>> @@ -44,10 +44,8 @@ CHECK-NEXT: pp_pragma_once_in_main_fil
>>>>>>>> CHECK-NEXT: pp_pragma_sysheader_in_main_file
>>>>>>>> CHECK-NEXT: w_asm_qualifier_ignored
>>>>>>>> CHECK-NEXT: warn_accessor_property_type_mismatch
>>>>>>>> -CHECK-NEXT: warn_anon_bitfield_width_exceeds_type_size
>>>>>>>> CHECK-NEXT: warn_arcmt_nsalloc_realloc
>>>>>>>> CHECK-NEXT: warn_asm_label_on_auto_decl
>>>>>>>> -CHECK-NEXT: warn_bitfield_width_exceeds_type_size
>>>>>>>> CHECK-NEXT: warn_c_kext
>>>>>>>> CHECK-NEXT:
>>>>>>>> warn_call_to_pure_virtual_member_function_from_ctor_dtor
>>>>>>>> CHECK-NEXT: warn_call_wrong_number_of_arguments
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/Sema/bitfield.c
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/bitfield.c?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/Sema/bitfield.c (original)
>>>>>>>> +++ cfe/trunk/test/Sema/bitfield.c Mon Sep 14 16:27:36 2015
>>>>>>>> @@ -6,7 +6,7 @@ struct a {
>>>>>>>> int a : -1; // expected-error{{bit-field 'a' has negative width}}
>>>>>>>>
>>>>>>>> // rdar://6081627
>>>>>>>> - int b : 33; // expected-error{{size of bit-field 'b' (33 bits)
>>>>>>>> exceeds size of its type (32 bits)}}
>>>>>>>> + int b : 33; // expected-error{{width of bit-field 'b' (33 bits)
>>>>>>>> exceeds width of its type (32 bits)}}
>>>>>>>>
>>>>>>>> int c : (1 + 0.25); // expected-error{{expression is not an
>>>>>>>> integer constant expression}}
>>>>>>>> int d : (int)(1 + 0.25);
>>>>>>>> @@ -22,9 +22,12 @@ struct a {
>>>>>>>> int g : (_Bool)1;
>>>>>>>>
>>>>>>>> // PR4017
>>>>>>>> - char : 10; // expected-error {{size of anonymous bit-field
>>>>>>>> (10 bits) exceeds size of its type (8 bits)}}
>>>>>>>> + char : 10; // expected-error {{width of anonymous bit-field
>>>>>>>> (10 bits) exceeds width of its type (8 bits)}}
>>>>>>>> unsigned : -2; // expected-error {{anonymous bit-field has
>>>>>>>> negative width (-2)}}
>>>>>>>> float : 12; // expected-error {{anonymous bit-field has
>>>>>>>> non-integral type 'float'}}
>>>>>>>> +
>>>>>>>> + _Bool : 2; // expected-error {{width of anonymous bit-field (2
>>>>>>>> bits) exceeds width of its type (1 bit)}}
>>>>>>>> + _Bool h : 5; // expected-error {{width of bit-field 'h' (5 bits)
>>>>>>>> exceeds width of its type (1 bit)}}
>>>>>>>> };
>>>>>>>>
>>>>>>>> struct b {unsigned x : 2;} x;
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/SemaCXX/bitfield-layout.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/bitfield-layout.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/SemaCXX/bitfield-layout.cpp (original)
>>>>>>>> +++ cfe/trunk/test/SemaCXX/bitfield-layout.cpp Mon Sep 14 16:27:36
>>>>>>>> 2015
>>>>>>>> @@ -5,25 +5,25 @@
>>>>>>>>
>>>>>>>> // Simple tests.
>>>>>>>> struct Test1 {
>>>>>>>> - char c : 9; // expected-warning {{size of bit-field 'c' (9 bits)
>>>>>>>> exceeds the size of its type; value will be truncated to 8 bits}}
>>>>>>>> + char c : 9; // expected-warning {{width of bit-field 'c' (9
>>>>>>>> bits) exceeds the width of its type; value will be truncated to 8 bits}}
>>>>>>>> };
>>>>>>>> CHECK_SIZE(Test1, 2);
>>>>>>>> CHECK_ALIGN(Test1, 1);
>>>>>>>>
>>>>>>>> struct Test2 {
>>>>>>>> - char c : 16; // expected-warning {{size of bit-field 'c' (16
>>>>>>>> bits) exceeds the size of its type; value will be truncated to 8 bits}}
>>>>>>>> + char c : 16; // expected-warning {{width of bit-field 'c' (16
>>>>>>>> bits) exceeds the width of its type; value will be truncated to 8 bits}}
>>>>>>>> };
>>>>>>>> CHECK_SIZE(Test2, 2);
>>>>>>>> CHECK_ALIGN(Test2, 2);
>>>>>>>>
>>>>>>>> struct Test3 {
>>>>>>>> - char c : 32; // expected-warning {{size of bit-field 'c' (32
>>>>>>>> bits) exceeds the size of its type; value will be truncated to 8 bits}}
>>>>>>>> + char c : 32; // expected-warning {{width of bit-field 'c' (32
>>>>>>>> bits) exceeds the width of its type; value will be truncated to 8 bits}}
>>>>>>>> };
>>>>>>>> CHECK_SIZE(Test3, 4);
>>>>>>>> CHECK_ALIGN(Test3, 4);
>>>>>>>>
>>>>>>>> struct Test4 {
>>>>>>>> - char c : 64; // expected-warning {{size of bit-field 'c' (64
>>>>>>>> bits) exceeds the size of its type; value will be truncated to 8 bits}}
>>>>>>>> + char c : 64; // expected-warning {{width of bit-field 'c' (64
>>>>>>>> bits) exceeds the width of its type; value will be truncated to 8 bits}}
>>>>>>>> };
>>>>>>>> CHECK_SIZE(Test4, 8);
>>>>>>>> CHECK_ALIGN(Test4, 8);
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp (original)
>>>>>>>> +++ cfe/trunk/test/SemaCXX/constant-expression-cxx11.cpp Mon Sep 14
>>>>>>>> 16:27:36 2015
>>>>>>>> @@ -1801,9 +1801,9 @@ namespace Bitfields {
>>>>>>>> bool b : 1;
>>>>>>>> unsigned u : 5;
>>>>>>>> int n : 5;
>>>>>>>> - bool b2 : 3;
>>>>>>>> - unsigned u2 : 74; // expected-warning {{exceeds the size of
>>>>>>>> its type}}
>>>>>>>> - int n2 : 81; // expected-warning {{exceeds the size of its
>>>>>>>> type}}
>>>>>>>> + bool b2 : 3; // expected-warning {{exceeds the width of its
>>>>>>>> type}}
>>>>>>>> + unsigned u2 : 74; // expected-warning {{exceeds the width of
>>>>>>>> its type}}
>>>>>>>> + int n2 : 81; // expected-warning {{exceeds the width of its
>>>>>>>> type}}
>>>>>>>> };
>>>>>>>>
>>>>>>>> constexpr A a = { false, 33, 31, false, 0xffffffff, 0x7fffffff
>>>>>>>> }; // expected-warning 2{{truncation}}
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/SemaCXX/constant-expression-cxx1y.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/constant-expression-cxx1y.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/SemaCXX/constant-expression-cxx1y.cpp (original)
>>>>>>>> +++ cfe/trunk/test/SemaCXX/constant-expression-cxx1y.cpp Mon Sep 14
>>>>>>>> 16:27:36 2015
>>>>>>>> @@ -872,7 +872,7 @@ namespace Lifetime {
>>>>>>>>
>>>>>>>> namespace Bitfields {
>>>>>>>> struct A {
>>>>>>>> - bool b : 3;
>>>>>>>> + bool b : 1;
>>>>>>>> int n : 4;
>>>>>>>> unsigned u : 5;
>>>>>>>> };
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/SemaCXX/ms_wide_bitfield.cpp
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/ms_wide_bitfield.cpp?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/SemaCXX/ms_wide_bitfield.cpp (original)
>>>>>>>> +++ cfe/trunk/test/SemaCXX/ms_wide_bitfield.cpp Mon Sep 14 16:27:36
>>>>>>>> 2015
>>>>>>>> @@ -1,9 +1,10 @@
>>>>>>>> // RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple i686-pc-win32
>>>>>>>> -fdump-record-layouts -fsyntax-only -mms-bitfields -verify %s 2>&1
>>>>>>>>
>>>>>>>> struct A {
>>>>>>>> - char a : 9; // expected-error{{size of bit-field 'a' (9 bits)
>>>>>>>> exceeds size of its type (8 bits)}}
>>>>>>>> - int b : 33; // expected-error{{size of bit-field 'b' (33 bits)
>>>>>>>> exceeds size of its type (32 bits)}}
>>>>>>>> - bool c : 9; // expected-error{{size of bit-field 'c' (9 bits)
>>>>>>>> exceeds size of its type (8 bits)}}
>>>>>>>> + char a : 9; // expected-error{{width of bit-field 'a' (9 bits)
>>>>>>>> exceeds width of its type (8 bits)}}
>>>>>>>> + int b : 33; // expected-error{{width of bit-field 'b' (33 bits)
>>>>>>>> exceeds width of its type (32 bits)}}
>>>>>>>> + bool c : 9; // expected-error{{width of bit-field 'c' (9 bits)
>>>>>>>> exceeds width of its type (1 bit)}}
>>>>>>>> + bool d : 3; // expected-error{{width of bit-field 'd' (3 bits)
>>>>>>>> exceeds width of its type (1 bit)}}
>>>>>>>> };
>>>>>>>>
>>>>>>>> int a[sizeof(A) == 1 ? 1 : -1];
>>>>>>>>
>>>>>>>> Modified: cfe/trunk/test/SemaObjC/class-bitfield.m
>>>>>>>> URL:
>>>>>>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/class-bitfield.m?rev=247618&r1=247617&r2=247618&view=diff
>>>>>>>>
>>>>>>>> ==============================================================================
>>>>>>>> --- cfe/trunk/test/SemaObjC/class-bitfield.m (original)
>>>>>>>> +++ cfe/trunk/test/SemaObjC/class-bitfield.m Mon Sep 14 16:27:36
>>>>>>>> 2015
>>>>>>>> @@ -5,7 +5,7 @@
>>>>>>>> int a : -1; // expected-error{{bit-field 'a' has negative width}}
>>>>>>>>
>>>>>>>> // rdar://6081627
>>>>>>>> - int b : 33; // expected-error{{size of bit-field 'b' (33 bits)
>>>>>>>> exceeds size of its type (32 bits)}}
>>>>>>>> + int b : 33; // expected-error{{width of bit-field 'b' (33 bits)
>>>>>>>> exceeds width of its type (32 bits)}}
>>>>>>>>
>>>>>>>> int c : (1 + 0.25); // expected-error{{expression is not an
>>>>>>>> integer constant expression}}
>>>>>>>> int d : (int)(1 + 0.25);
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> cfe-commits mailing list
>>>>>>>> cfe-commits at lists.llvm.org
>>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> cfe-commits mailing list
>>>>>>> cfe-commits at lists.llvm.org
>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> cfe-commits mailing list
>>>>>> cfe-commits at lists.llvm.org
>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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