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https://issues.apache.org/jira/browse/XERCESC-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Boris Kolpackov closed XERCESC-1382.
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Resolution: Invalid
Compilers without bool are no longer supported.
> Unreliable bool definition for compilers without bool type
> ----------------------------------------------------------
>
> Key: XERCESC-1382
> URL: https://issues.apache.org/jira/browse/XERCESC-1382
> Project: Xerces-C++
> Issue Type: Bug
> Affects Versions: 2.6.0
> Environment: Solaris 2.8 SPARCompiler 4.2
> Reporter: Maciek Samsel
>
> For those compilers that do not recognize bool type yet the definition as it
> is now (see below) will not cut:
> #if defined(NO_NATIVE_BOOL)
> #ifndef bool
> typedef int bool;
> #endif
> #ifndef true
> #define true 1
> #endif
> #ifndef false
> #define false 0
> #endif
> #endif
> That will cause compiler errors whenever you have declaration/definition of a
> method with int and and another with bool. Compiler tries to build the same
> signature and gets confused. It happend with:
> XSerializeEngine.hpp:
> XSerializeEngine& operator<<(int);
> XSerializeEngine& operator<<(bool);
> // NO GO! Compiler error if bool is typedef as alias to int
> The better approach that will not confuse compiler without bool type is to
> base bool on enumeration like that:
> #if defined(NO_NATIVE_BOOL)
> #ifndef bool
> typedef enum {false=0, true=1} bool;
> #endif
> #endif
> ... as long as we do not set enum as not convertible to integer (which was
> possible at least with IBM VisualAge for C++ compiler).
> Please adjust the file... as it compiles with proposed definition quite well.
> There are also other approaches to deal with bool type or "smart enumeration
> types". See how it was done in Java without enum but strict type checking -
> it would be preferable way to apply to undefined bool type as other vendor
> may define bool differently for libraries and it will cause conflicts with
> current or proposed here solution in Xerces.
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