Hey Liming,

I would without a doubt vote for VS2005 to be deprecated, especially when it 
isn't even tested anymore.
Who would be in charge of that? The BaseTools maintainers?
If it won't be deprecated, I think merging the changes should be done to 
support all supported toolchains.

Regards,
Marvin.

> -----Original Message-----
> From: Gao, Liming [mailto:liming....@intel.com]
> Sent: Thursday, July 27, 2017 3:17 PM
> To: marvin.haeu...@outlook.com; edk2-devel@lists.01.org
> Cc: Fan, Jeff <jeff....@intel.com>
> Subject: RE: [PATCH] UefiCpuPkg: Add BOOLEAN casts to return statements.
> 
> Marvin:
>   Yes. They are too old. We have no verification for them.
> 
> Thanks
> Liming
> > -----Original Message-----
> > From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of
> > Marvin H?user
> > Sent: Wednesday, July 26, 2017 4:36 PM
> > To: edk2-devel@lists.01.org
> > Cc: Fan, Jeff <jeff....@intel.com>
> > Subject: Re: [edk2] [PATCH] UefiCpuPkg: Add BOOLEAN casts to return
> statements.
> >
> > Hi Jeff,
> >
> > Visual Studio 2005 (and .NET 2003, though it is too old to compile
> > using EDK2. Maybe it should be deprecated?) is the version generating
> those errors, all newer versions are fine.
> >
> > Thanks and regards,
> > Marvin.
> >
> > > -----Original Message-----
> > > From: Fan, Jeff [mailto:jeff....@intel.com]
> > > Sent: Wednesday, July 26, 2017 4:45 AM
> > > To: Marvin Häuser <marvin.haeu...@outlook.com>; edk2-
> > > de...@lists.01.org
> > > Subject: RE: [PATCH] UefiCpuPkg: Add BOOLEAN casts to return
> statements.
> > >
> > > Marvin,
> > >
> > > Could you tell what VS version you are using?
> > >
> > > Jeff
> > >
> > > -----Original Message-----
> > > From: Marvin Häuser [mailto:marvin.haeu...@outlook.com]
> > > Sent: Friday, July 21, 2017 6:20 PM
> > > To: edk2-devel@lists.01.org
> > > Cc: Fan, Jeff
> > > Subject: [PATCH] UefiCpuPkg: Add BOOLEAN casts to return statements.
> > >
> > > Old versions of the Visual Studio C compiler return a value of type
> > > 'int' for comparisons, which is what the C99 standard defines in the
> > > sections 6.5.8 and 6.5.9. When the result of a comparison is
> > > returned, int is implicitely casted to BOOLEAN, which is smaller,
> > > and hence a warning about a possible loss of data is generated. This
> > > patch adds casts to BOOLEAN where necessary to silence these.
> > >
> > > Contributed-under: TianoCore Contribution Agreement 1.1
> > > Signed-off-by: Marvin Haeuser <marvin.haeu...@outlook.com>
> > > ---
> > >  UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c                     | 8 
> > > ++++----
> > >  UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c         | 8
> ++++-
> > > ---
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/Aesni.c                    | 2 +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/C1e.c                      | 2 +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/ClockModulation.c          | 2
> +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/Eist.c                     | 2 +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c           | 2
> +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c           | 4
> ++--
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/LimitCpuIdMaxval.c         | 2
> +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c             | 6
> > > +++---
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/MonitorMwait.c             | 2
> +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c             | 2
> +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c                     | 2 +-
> > >  UefiCpuPkg/Library/CpuCommonFeaturesLib/X2Apic.c                   | 2 +-
> > >  UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
> > > | 2 +-
> > >  15 files changed, 24 insertions(+), 24 deletions(-)
> > >
> > > diff --git a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
> > > b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
> > > index 2091e5e2d0dd..55aee6c607f7 100644
> > > --- a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
> > > +++ b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
> > > @@ -3,7 +3,7 @@
> > >
> > >    This local APIC library instance supports xAPIC mode only.
> > >
> > > -  Copyright (c) 2010 - 2016, Intel Corporation. All rights
> > > reserved.<BR>
> > > +  Copyright (c) 2010 - 2017, Intel Corporation. All rights
> > > + reserved.<BR>
> > >    Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
> > >
> > >    This program and the accompanying materials @@ -49,9 +49,9 @@
> > > StandardSignatureIsAuthenticAMD (
> > >    UINT32  RegEdx;
> > >
> > >    AsmCpuid(CPUID_SIGNATURE, NULL, &RegEbx, &RegEcx, &RegEdx);
> > > -  return (RegEbx == CPUID_SIGNATURE_AUTHENTIC_AMD_EBX &&
> > > -          RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&
> > > -          RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);
> > > +  return (BOOLEAN)(RegEbx ==
> CPUID_SIGNATURE_AUTHENTIC_AMD_EBX
> > > &&
> > > +                   RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&
> > > +                   RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
> > > b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
> > > index d5d4efaeb408..bfd5acceebfa 100644
> > > --- a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
> > > +++ b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
> > > @@ -4,7 +4,7 @@
> > >    This local APIC library instance supports x2APIC capable processors
> > >    which have xAPIC and x2APIC modes.
> > >
> > > -  Copyright (c) 2010 - 2016, Intel Corporation. All rights
> > > reserved.<BR>
> > > +  Copyright (c) 2010 - 2017, Intel Corporation. All rights
> > > + reserved.<BR>
> > >    Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
> > >
> > >    This program and the accompanying materials @@ -50,9 +50,9 @@
> > > StandardSignatureIsAuthenticAMD (
> > >    UINT32  RegEdx;
> > >
> > >    AsmCpuid(CPUID_SIGNATURE, NULL, &RegEbx, &RegEcx, &RegEdx);
> > > -  return (RegEbx == CPUID_SIGNATURE_AUTHENTIC_AMD_EBX &&
> > > -          RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&
> > > -          RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);
> > > +  return (BOOLEAN)(RegEbx ==
> CPUID_SIGNATURE_AUTHENTIC_AMD_EBX
> > > &&
> > > +                   RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&
> > > +                   RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);
> > >  }
> > >
> > >  /**
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Aesni.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Aesni.c
> > > index 178bfb50abcf..df0f56ab9d82 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Aesni.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Aesni.c
> > > @@ -69,7 +69,7 @@ AesniSupport (
> > >        IS_XEON_PHI_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo-
> > > >DisplayModel)) {
> > >      MsrFeatureConfig =
> (MSR_SANDY_BRIDGE_FEATURE_CONFIG_REGISTER
> > > *) ConfigData;
> > >      MsrFeatureConfig[ProcessorNumber].Uint64 = AsmReadMsr64
> > > (MSR_SANDY_BRIDGE_FEATURE_CONFIG);
> > > -    return (CpuInfo->CpuIdVersionInfoEcx.Bits.AESNI == 1);
> > > +    return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.AESNI == 1);
> > >    }
> > >    return FALSE;
> > >  }
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/C1e.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/C1e.c
> > > index 47116355a8ff..00ebc5c9a19e 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/C1e.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/C1e.c
> > > @@ -38,7 +38,7 @@ C1eSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return IS_NEHALEM_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo-
> > > >DisplayModel);
> > > +  return (BOOLEAN)IS_NEHALEM_PROCESSOR (CpuInfo->DisplayFamily,
> > > + CpuInfo->DisplayModel);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ClockModulation.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ClockModulation.c
> > > index 56e53561e9de..e625b061829f 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ClockModulation.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ClockModulation.c
> > > @@ -38,7 +38,7 @@ ClockModulationSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return (CpuInfo->CpuIdVersionInfoEdx.Bits.ACPI == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEdx.Bits.ACPI == 1);
> > >  }
> > >
> > >  /**
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Eist.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Eist.c
> > > index 2038171a14c3..593a1e1b35b5 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Eist.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Eist.c
> > > @@ -38,7 +38,7 @@ EistSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return (CpuInfo->CpuIdVersionInfoEcx.Bits.EIST == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.EIST == 1);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
> > > index 921656a1e869..1ba942990113 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
> > > @@ -50,7 +50,7 @@ ExecuteDisableSupport (
> > >    }
> > >
> > >    AsmCpuid (CPUID_EXTENDED_CPU_SIG, NULL, NULL, NULL,
> &Edx.Uint32);
> > > -  return (Edx.Bits.NX != 0);
> > > +  return (BOOLEAN)(Edx.Bits.NX != 0);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
> > > index d28c4ec51a04..fae09d8be711 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
> > > @@ -65,7 +65,7 @@ VmxSupport (
> > >    ASSERT (ConfigData != NULL);
> > >    MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *)
> ConfigData;
> > >    MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64
> > > (MSR_IA32_FEATURE_CONTROL);
> > > -  return (CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1);
> > >  }
> > >
> > >  /**
> > > @@ -215,7 +215,7 @@ SmxSupport (
> > >    ASSERT (ConfigData != NULL);
> > >    MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *)
> ConfigData;
> > >    MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64
> > > (MSR_IA32_FEATURE_CONTROL);
> > > -  return (CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/CpuCommonFeaturesLib/LimitCpuIdMaxval.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/LimitCpuIdMaxval.c
> > > index 40cc9d5fe0cf..ee037c35dc5a 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/LimitCpuIdMaxval.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/LimitCpuIdMaxval.c
> > > @@ -41,7 +41,7 @@ LimitCpuidMaxvalSupport (
> > >    UINT32  Eax;
> > >
> > >    AsmCpuid (CPUID_SIGNATURE, &Eax, NULL, NULL, NULL);
> > > -  return (Eax > 3);
> > > +  return (BOOLEAN)(Eax > 3);
> > >  }
> > >
> > >  /**
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c
> > > index 72f665d32e36..0e3b3468d7bc 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/MachineCheck.c
> > > @@ -38,7 +38,7 @@ MceSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCE == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEdx.Bits.MCE == 1);
> > >  }
> > >
> > >  /**
> > > @@ -105,7 +105,7 @@ McaSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCA == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEdx.Bits.MCA == 1);
> > >  }
> > >
> > >  /**
> > > @@ -191,7 +191,7 @@ McgCtlSupport (
> > >      return FALSE;
> > >    }
> > >    McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
> > > -  return (McgCap.Bits.MCG_CTL_P == 1);
> > > +  return (BOOLEAN)(McgCap.Bits.MCG_CTL_P == 1);
> > >  }
> > >
> > >  /**
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/MonitorMwait.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/MonitorMwait.c
> > > index 1d43bd128afe..67aaf37d4e3d 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/MonitorMwait.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/MonitorMwait.c
> > > @@ -38,7 +38,7 @@ MonitorMwaitSupport (
> > >    IN VOID                              *ConfigData  OPTIONAL
> > >    )
> > >  {
> > > -  return (CpuInfo->CpuIdVersionInfoEcx.Bits.MONITOR == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.MONITOR ==
> 1);
> > >  }
> > >
> > >  /**
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
> > > index 8cafba4f4a87..5df2ef15ddcf 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
> > > @@ -43,7 +43,7 @@ PendingBreakSupport (
> > >        IS_CORE_PROCESSOR (CpuInfo->DisplayFamily,
> > > CpuInfo->DisplayModel)
> > > ||
> > >        IS_PENTIUM_4_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo-
> > > >DisplayModel) ||
> > >        IS_PENTIUM_M_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo-
> > > >DisplayModel)) {
> > > -    return (CpuInfo->CpuIdVersionInfoEdx.Bits.PBE == 1);
> > > +    return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEdx.Bits.PBE == 1);
> > >    }
> > >    return FALSE;
> > >  }
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c
> > > index 146c4cfda3f9..438578a83230 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c
> > > @@ -53,7 +53,7 @@ PpinSupport (
> > >      // Check whether platform support this feature.
> > >      //
> > >      PlatformInfo.Uint64 = AsmReadMsr64
> > > (MSR_IVY_BRIDGE_PLATFORM_INFO_1);
> > > -    return (PlatformInfo.Bits.PPIN_CAP != 0);
> > > +    return (BOOLEAN)(PlatformInfo.Bits.PPIN_CAP != 0);
> > >    }
> > >
> > >    return FALSE;
> > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/X2Apic.c
> > > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/X2Apic.c
> > > index b4a453c3525c..ecaf47a4af00 100644
> > > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/X2Apic.c
> > > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/X2Apic.c
> > > @@ -71,7 +71,7 @@ X2ApicSupport (
> > >    //
> > >    X2ApicEnabled[ProcessorNumber] = (GetApicMode () ==
> > > LOCAL_APIC_MODE_X2APIC) ? TRUE : FALSE;
> > >
> > > -  return (CpuInfo->CpuIdVersionInfoEcx.Bits.x2APIC == 1);
> > > +  return (BOOLEAN)(CpuInfo->CpuIdVersionInfoEcx.Bits.x2APIC == 1);
> > >  }
> > >
> > >  /**
> > > diff --git
> > > a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
> > > b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
> > > index 338f1a495cf4..c093356ab150 100644
> > > ---
> > > a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
> > > +++
> > > b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c
> > > @@ -650,7 +650,7 @@ IsCpuFeatureSetInCpuPcd (
> > >    if ((Feature >> 3) >= CpuBitMaskSize) {
> > >      return FALSE;
> > >    }
> > > -  return ((*(CpuBitMask + (Feature >> 3)) & (1 << (Feature &
> > > 0x07))) != 0);
> > > +  return (BOOLEAN)((*(CpuBitMask + (Feature >> 3)) & (1 << (Feature
> > > + &
> > > + 0x07))) != 0);
> > >  }
> > >
> > >  /**
> > > --
> > > 2.12.2.windows.2
> >
> > _______________________________________________
> > edk2-devel mailing list
> > edk2-devel@lists.01.org
> > https://lists.01.org/mailman/listinfo/edk2-devel
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