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introduce SAL_RET_MAYBENULL

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which for debug builds and MSVC uses _Ret_maybenull_ and -analyze to
enforce null checking

Change-Id: Id7f0ad854be7841819fdbdcd56c862d1a2df86c3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166734
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins
This commit is contained in:
Caolán McNamara 2024-04-29 20:45:05 +01:00
parent 30d376fb7d
commit 1148d6ad13
11 changed files with 66 additions and 37 deletions
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2
cli_ure/Executable_climaker.mk
View file

@ -13,9 +13,11 @@ $(eval $(call gb_Executable_use_package,climaker,\
cli_basetypes_copy \
))
# -analyze- to turn that off due to internal compiler error
$(eval $(call gb_Executable_add_cxxclrflags,climaker,\
-LN \
-wd4715 \
-analyze- \
))
$(eval $(call gb_Executable_add_ldflags,climaker,\

17
include/sal/types.h
View file

@ -273,10 +273,10 @@ typedef void * sal_Handle;
#endif
/** Use this as markup for functions and methods whose return value must be
checked.
used.
Compilers that support a construct of this nature will emit a compile
time warning on unchecked return value.
time warning on unused return value.
*/
#if defined LIBO_INTERNAL_ONLY && defined __cplusplus
#define SAL_WARN_UNUSED_RESULT [[nodiscard]]
@ -288,6 +288,19 @@ typedef void * sal_Handle;
# define SAL_WARN_UNUSED_RESULT
#endif
/** Use this as markup for functions and methods whose return value may be
null and should not be derefenced unconditionally.
Compilers that support a construct of this nature will emit a compile
time warning on unconditional dereference of returned pointer.
*/
#ifdef _MSC_VER
# define SAL_RET_MAYBENULL _Ret_maybenull_
#else
# define SAL_RET_MAYBENULL
#endif
/** Use this for pure virtual classes, e.g. class SAL_NO_VTABLE Foo { ...
This hinders the compiler from setting a generic vtable stating that
a pure virtual function was called and thus slightly reduces code size.

6
include/sfx2/objsh.hxx
View file

@ -249,12 +249,12 @@ public:
static OUString CreateShellID( const SfxObjectShell* pShell );
// Document-Shell Iterator
SAL_WARN_UNUSED_RESULT static SfxObjectShell* GetFirst( const std::function<bool ( const SfxObjectShell* )>& isObjectShell = nullptr,
SAL_RET_MAYBENULL static SfxObjectShell* GetFirst( const std::function<bool ( const SfxObjectShell* )>& isObjectShell = nullptr,
bool bOnlyVisible = true );
SAL_WARN_UNUSED_RESULT static SfxObjectShell* GetNext( const SfxObjectShell& rPrev,
SAL_RET_MAYBENULL static SfxObjectShell* GetNext( const SfxObjectShell& rPrev,
const std::function<bool ( const SfxObjectShell* )>& isObjectShell = nullptr,
bool bOnlyVisible = true );
SAL_WARN_UNUSED_RESULT static SfxObjectShell* Current();
SAL_RET_MAYBENULL static SfxObjectShell* Current();
static css::uno::Reference< css::uno::XInterface >
GetCurrentComponent();
static void SetCurrentComponent( const css::uno::Reference< css::uno::XInterface >& _rxComponent );

8
include/sfx2/viewfrm.hxx
View file

@ -96,11 +96,11 @@ public:
static SfxViewFrame* LoadDocumentIntoFrame( SfxObjectShell const & i_rDoc, const css::uno::Reference< css::frame::XFrame >& i_rFrameItem );
static SfxViewFrame* DisplayNewDocument( SfxObjectShell const & i_rDoc, const SfxRequest& i_rCreateDocRequest );
SAL_WARN_UNUSED_RESULT static SfxViewFrame* Current();
SAL_WARN_UNUSED_RESULT static SfxViewFrame* GetFirst( const SfxObjectShell* pDoc = nullptr, bool bOnlyVisible = true );
SAL_WARN_UNUSED_RESULT static SfxViewFrame* GetNext( const SfxViewFrame& rPrev, const SfxObjectShell* pDoc = nullptr, bool bOnlyVisible = true );
SAL_RET_MAYBENULL static SfxViewFrame* Current();
SAL_RET_MAYBENULL static SfxViewFrame* GetFirst( const SfxObjectShell* pDoc = nullptr, bool bOnlyVisible = true );
SAL_RET_MAYBENULL static SfxViewFrame* GetNext( const SfxViewFrame& rPrev, const SfxObjectShell* pDoc = nullptr, bool bOnlyVisible = true );
SAL_WARN_UNUSED_RESULT SAL_DLLPRIVATE static SfxViewFrame* Get( const css::uno::Reference< css::frame::XController>& i_rController, const SfxObjectShell* i_pDoc );
SAL_RET_MAYBENULL SAL_DLLPRIVATE static SfxViewFrame* Get( const css::uno::Reference< css::frame::XController>& i_rController, const SfxObjectShell* i_pDoc );
SAL_DLLPRIVATE void DoActivate(bool bMDI);
SAL_DLLPRIVATE void DoDeactivate(bool bMDI, SfxViewFrame const *pOld);

8
include/sfx2/viewsh.hxx
View file

@ -204,14 +204,14 @@ protected:
public:
// Iteration
SAL_WARN_UNUSED_RESULT static SfxViewShell* GetFirst( bool bOnlyVisible = true, const std::function<bool ( const SfxViewShell& )>& isViewShell = nullptr );
SAL_WARN_UNUSED_RESULT static SfxViewShell* GetNext( const SfxViewShell& rPrev,
SAL_RET_MAYBENULL static SfxViewShell* GetFirst( bool bOnlyVisible = true, const std::function<bool ( const SfxViewShell& )>& isViewShell = nullptr );
SAL_RET_MAYBENULL static SfxViewShell* GetNext( const SfxViewShell& rPrev,
bool bOnlyVisible = true,
const std::function<bool ( const SfxViewShell& )>& isViewShell = nullptr );
SAL_WARN_UNUSED_RESULT static SfxViewShell* Current();
SAL_RET_MAYBENULL static SfxViewShell* Current();
SAL_WARN_UNUSED_RESULT static bool IsCurrentLokViewReadOnly();
SAL_WARN_UNUSED_RESULT static SfxViewShell* Get( const css::uno::Reference< css::frame::XController>& i_rController );
SAL_RET_MAYBENULL static SfxViewShell* Get( const css::uno::Reference< css::frame::XController>& i_rController );
// Initialize Constructors/Destructors
SFX_DECL_INTERFACE(SFX_INTERFACE_SFXVIEWSH)

8
sfx2/source/doc/objxtor.cxx
View file

@ -458,7 +458,7 @@ OUString SfxObjectShell::CreateShellID( const SfxObjectShell* pShell )
// returns a pointer the first SfxDocument of specified type
SfxObjectShell* SfxObjectShell::GetFirst
SAL_RET_MAYBENULL SfxObjectShell* SfxObjectShell::GetFirst
(
const std::function<bool ( const SfxObjectShell* )>& isObjectShell,
bool bOnlyVisible
@ -483,7 +483,7 @@ SfxObjectShell* SfxObjectShell::GetFirst
// returns a pointer to the next SfxDocument of specified type behind *pDoc
SfxObjectShell* SfxObjectShell::GetNext
SAL_RET_MAYBENULL SfxObjectShell* SfxObjectShell::GetNext
(
const SfxObjectShell& rPrev,
const std::function<bool ( const SfxObjectShell* )>& isObjectShell,
@ -512,14 +512,12 @@ SfxObjectShell* SfxObjectShell::GetNext
return nullptr;
}
SfxObjectShell* SfxObjectShell::Current()
SAL_RET_MAYBENULL SfxObjectShell* SfxObjectShell::Current()
{
SfxViewFrame *pFrame = SfxViewFrame::Current();
return pFrame ? pFrame->GetObjectShell() : nullptr;
}
bool SfxObjectShell::IsInPrepareClose() const
{
return pImpl->bInPrepareClose;

8
sfx2/source/view/viewfrm.cxx
View file

@ -2067,14 +2067,14 @@ void SfxViewFrame::KillDispatcher_Impl()
}
}
SfxViewFrame* SfxViewFrame::Current()
SAL_RET_MAYBENULL SfxViewFrame* SfxViewFrame::Current()
{
SfxApplication* pApp = SfxApplication::Get();
return pApp ? pApp->Get_Impl()->pViewFrame : nullptr;
}
// returns the first window of spec. type viewing the specified doc.
SfxViewFrame* SfxViewFrame::GetFirst
SAL_RET_MAYBENULL SfxViewFrame* SfxViewFrame::GetFirst
(
const SfxObjectShell* pDoc,
bool bOnlyIfVisible
@ -2097,7 +2097,7 @@ SfxViewFrame* SfxViewFrame::GetFirst
}
// returns the next window of spec. type viewing the specified doc.
SfxViewFrame* SfxViewFrame::GetNext
SAL_RET_MAYBENULL SfxViewFrame* SfxViewFrame::GetNext
(
const SfxViewFrame& rPrev,
const SfxObjectShell* pDoc,
@ -2448,7 +2448,7 @@ SfxViewFrame* SfxViewFrame::DisplayNewDocument( SfxObjectShell const & i_rDoc, c
);
}
SfxViewFrame* SfxViewFrame::Get( const Reference< XController>& i_rController, const SfxObjectShell* i_pDoc )
SAL_RET_MAYBENULL SfxViewFrame* SfxViewFrame::Get( const Reference< XController>& i_rController, const SfxObjectShell* i_pDoc )
{
if ( !i_rController.is() )
return nullptr;

11
sfx2/source/view/viewsh.cxx
View file

@ -2835,8 +2835,7 @@ bool SfxViewShell::PrepareClose
return true;
}
SfxViewShell* SfxViewShell::Current()
SAL_RET_MAYBENULL SfxViewShell* SfxViewShell::Current()
{
SfxViewFrame *pCurrent = SfxViewFrame::Current();
return pCurrent ? pCurrent->GetViewShell() : nullptr;
@ -2850,7 +2849,7 @@ bool SfxViewShell::IsCurrentLokViewReadOnly()
return pCurrent && pCurrent->IsLokReadOnlyView();
}
SfxViewShell* SfxViewShell::Get( const Reference< XController>& i_rController )
SAL_RET_MAYBENULL SfxViewShell* SfxViewShell::Get( const Reference< XController>& i_rController )
{
if ( !i_rController.is() )
return nullptr;
@ -2866,7 +2865,6 @@ SfxViewShell* SfxViewShell::Get( const Reference< XController>& i_rController )
return nullptr;
}
SdrView* SfxViewShell::GetDrawView() const
/* [Description]
@ -3011,7 +3009,7 @@ void SfxViewShell::WriteUserDataSequence ( uno::Sequence < beans::PropertyValue
// returns the first shell of spec. type viewing the specified doc.
SfxViewShell* SfxViewShell::GetFirst
SAL_RET_MAYBENULL SfxViewShell* SfxViewShell::GetFirst
(
bool bOnlyVisible,
const std::function< bool ( const SfxViewShell& ) >& isViewShell
@ -3040,7 +3038,7 @@ SfxViewShell* SfxViewShell::GetFirst
}
// returns the next shell of spec. type viewing the specified doc.
SfxViewShell* SfxViewShell::GetNext
SAL_RET_MAYBENULL SfxViewShell* SfxViewShell::GetNext
(
const SfxViewShell& rPrev,
bool bOnlyVisible,
@ -3068,7 +3066,6 @@ SfxViewShell* SfxViewShell::GetNext
return nullptr;
}
void SfxViewShell::Notify( SfxBroadcaster& rBC,
const SfxHint& rHint )
{

14
solenv/gbuild/platform/com_MSC_class.mk
View file

@ -49,7 +49,7 @@ endef
gb_Helper_remove_overridden_flags = \
$(filter-out -W4 -w -arch:SSE -arch:SSE2 -arch:AVX -arch:AVX2 -Od -O2 -Zc:inline -Zc:inline- \
-Zc:dllexportInlines -Zc:dllexportInlines- -EHs -EHa -DNOMINMAX -UNOMINMAX -D_X86_=1 -U_X86_ \
-D_AMD64_=1 -U_AMD64_,$(1)) \
-D_AMD64_=1 -U_AMD64_ $(MSVC_ANALYZE_FLAGS) -analyze-,$(1)) \
$(lastword $(filter -W4 -w,$(1))) \
$(lastword $(filter -Od -O2,$(1))) \
$(lastword $(filter -arch:SSE -arch:SSE2 -arch:AVX -arch:AVX2,$(1))) \
@ -58,7 +58,14 @@ gb_Helper_remove_overridden_flags = \
$(lastword $(filter -D_X86_=1 -U_X86_,$(1))) \
$(lastword $(filter -D_AMD64_=1 -U_AMD64_,$(1))) \
$(lastword $(filter -Zc:inline -Zc:inline-,$(1))) \
$(lastword $(filter -Zc:dllexportInlines -Zc:dllexportInlines-,$(1)))
$(lastword $(filter -Zc:dllexportInlines -Zc:dllexportInlines-,$(1))) \
$(lastword $(filter $(MSVC_ANALYZE_FLAGS) -analyze-,$(1)))
# When gb_LinkTarget_use_clang is used, filter out MSVC flags that Clang doesn't know.
# $(call gb_CObject__filter_out_clang_cflags,cflags)
define gb_CObject__filter_out_clang_cflags
$(filter-out $(gb_FilterOutClangCFLAGS),$(1))
endef
# $(call gb_CObject__command_pattern,object,flags,source,dep-file,compiler-plugins,compiler)
define gb_CObject__command_pattern
@ -71,7 +78,8 @@ $(call gb_Helper_abbreviate_dirs,\
$(call gb_Helper_remove_overridden_flags, \
$(DEFS) \
$(if $(filter YES,$(LIBRARY_X64)), ,$(gb_LTOFLAGS)) \
$(2) $(if $(WARNINGS_DISABLED),$(gb_CXXFLAGS_DISABLE_WARNINGS)) \
$(if $(6), $(call gb_CObject__filter_out_clang_cflags,$(2)),$(2)) \
$(if $(WARNINGS_DISABLED),$(gb_CXXFLAGS_DISABLE_WARNINGS)) \
$(if $(EXTERNAL_CODE), \
$(if $(filter -clr,$(2)),,$(if $(COM_IS_CLANG),-Wno-undef)), \
$(gb_DEFS_INTERNAL)) \

5
solenv/gbuild/platform/com_MSC_defs.mk
View file

@ -104,6 +104,10 @@ gb_AFLAGS := $(AFLAGS)
# C4706: assignment within conditional expression
MSVC_ANALYZE_FLAGS := -analyze:ruleset$(SRCDIR)/solenv/vs/LibreOffice.ruleset
gb_FilterOutClangCFLAGS += $(MSVC_ANALYZE_FLAGS)
gb_CFLAGS := \
-utf-8 \
-Gd \
@ -141,6 +145,7 @@ gb_CXXFLAGS := \
-wd4611 \
-wd4706 \
-bigobj \
$(if $(ENABLE_DEBUG),$(MSVC_ANALYZE_FLAGS),) \
ifneq ($(COM_IS_CLANG),TRUE)
gb_CXXFLAGS += -Zc:inline

6
solenv/vs/LibreOffice.ruleset Normal file
View file

@ -0,0 +1,6 @@
<?xml version="1.0" encoding="utf-8"?>
<RuleSet Name="LibreOffice Rule Set" Description=" " ToolsVersion="15.0">
<Rules AnalyzerId="Microsoft.Analyzers.NativeCodeAnalysis" RuleNamespace="Microsoft.Rules.Native">
<Rule Id="C6011" Action="Warning"/>
</Rules>
</RuleSet>