This revision was automatically updated to reflect the committed changes.
Closed by commit rG7b3fe9699277: [clang] Don't emit warn_cxx_ms_struct
when MSBitfields is enabled globally (authored by mstorsjo).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D81794/new/
https://reviews.llvm.org/D81794
Files:
clang/lib/Sema/SemaDeclCXX.cpp
clang/test/SemaCXX/ms_struct.cpp
Index: clang/test/SemaCXX/ms_struct.cpp
===================================================================
--- clang/test/SemaCXX/ms_struct.cpp
+++ clang/test/SemaCXX/ms_struct.cpp
@@ -1,8 +1,11 @@
-// RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify
-triple i686-apple-darwin9 -std=c++11 %s
-// RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify
-triple armv7-apple-darwin9 -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING
-Wno-error=incompatible-ms-struct -verify -triple i686-apple-darwin9 -std=c++11
%s
+// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING
-Wno-error=incompatible-ms-struct -verify -triple armv7-apple-darwin9
-std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_ERROR -verify -triple
armv7-apple-darwin9 -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -DNO_PRAGMA -mms-bitfields -verify -triple
armv7-apple-darwin9 -std=c++11 %s
+#ifndef NO_PRAGMA
#pragma ms_struct on
+#endif
struct A {
unsigned long a:4;
@@ -12,7 +15,7 @@
struct B : public A {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible
layouts for classes with base classes or virtual functions}}
-#else
+#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible
layouts for classes with base classes or virtual functions}}
#endif
unsigned long c:16;
@@ -27,7 +30,7 @@
struct C {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible
layouts for classes with base classes or virtual functions}}
-#else
+#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible
layouts for classes with base classes or virtual functions}}
#endif
virtual void foo();
@@ -36,3 +39,6 @@
static_assert(__builtin_offsetof(C, n) == 8,
"long long field in ms_struct should be 8-byte aligned");
+#if !defined(TEST_FOR_ERROR) && !defined(TEST_FOR_WARNING)
+// expected-no-diagnostics
+#endif
Index: clang/lib/Sema/SemaDeclCXX.cpp
===================================================================
--- clang/lib/Sema/SemaDeclCXX.cpp
+++ clang/lib/Sema/SemaDeclCXX.cpp
@@ -6773,7 +6773,11 @@
// headers, sweeping up a bunch of types that the project doesn't
// really rely on MSVC-compatible layout for. We must therefore
// support "ms_struct except for C++ stuff" as a secondary ABI.
- if (Record->isMsStruct(Context) &&
+ // Don't emit this diagnostic if the feature was enabled as a
+ // language option (as opposed to via a pragma or attribute), as
+ // the option -mms-bitfields otherwise essentially makes it impossible
+ // to build C++ code, unless this diagnostic is turned off.
+ if (Record->isMsStruct(Context) && !Context.getLangOpts().MSBitfields &&
(Record->isPolymorphic() || Record->getNumBases())) {
Diag(Record->getLocation(), diag::warn_cxx_ms_struct);
}
Index: clang/test/SemaCXX/ms_struct.cpp
===================================================================
--- clang/test/SemaCXX/ms_struct.cpp
+++ clang/test/SemaCXX/ms_struct.cpp
@@ -1,8 +1,11 @@
-// RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify -triple i686-apple-darwin9 -std=c++11 %s
-// RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify -triple armv7-apple-darwin9 -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING -Wno-error=incompatible-ms-struct -verify -triple i686-apple-darwin9 -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_WARNING -Wno-error=incompatible-ms-struct -verify -triple armv7-apple-darwin9 -std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_ERROR -verify -triple armv7-apple-darwin9 -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -DNO_PRAGMA -mms-bitfields -verify -triple armv7-apple-darwin9 -std=c++11 %s
+#ifndef NO_PRAGMA
#pragma ms_struct on
+#endif
struct A {
unsigned long a:4;
@@ -12,7 +15,7 @@
struct B : public A {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
-#else
+#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#endif
unsigned long c:16;
@@ -27,7 +30,7 @@
struct C {
#ifdef TEST_FOR_ERROR
// expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
-#else
+#elif defined(TEST_FOR_WARNING)
// expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
#endif
virtual void foo();
@@ -36,3 +39,6 @@
static_assert(__builtin_offsetof(C, n) == 8,
"long long field in ms_struct should be 8-byte aligned");
+#if !defined(TEST_FOR_ERROR) && !defined(TEST_FOR_WARNING)
+// expected-no-diagnostics
+#endif
Index: clang/lib/Sema/SemaDeclCXX.cpp
===================================================================
--- clang/lib/Sema/SemaDeclCXX.cpp
+++ clang/lib/Sema/SemaDeclCXX.cpp
@@ -6773,7 +6773,11 @@
// headers, sweeping up a bunch of types that the project doesn't
// really rely on MSVC-compatible layout for. We must therefore
// support "ms_struct except for C++ stuff" as a secondary ABI.
- if (Record->isMsStruct(Context) &&
+ // Don't emit this diagnostic if the feature was enabled as a
+ // language option (as opposed to via a pragma or attribute), as
+ // the option -mms-bitfields otherwise essentially makes it impossible
+ // to build C++ code, unless this diagnostic is turned off.
+ if (Record->isMsStruct(Context) && !Context.getLangOpts().MSBitfields &&
(Record->isPolymorphic() || Record->getNumBases())) {
Diag(Record->getLocation(), diag::warn_cxx_ms_struct);
}
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