Re: [boost] [preprocessor] Dropping support for compilers that do not implement variadic macros

On Fri, Sep 18, 2020 at 1:10 AM Joaquín M López Muñoz via Boost wrote:

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Em 17 de set de 2020, à(s) 23:09, Edward Diener via Boost escreveu:

On 9/15/2020 7:13 AM, Peter Dimov via Boost wrote:

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Edward Diener wrote:

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Which compilers will be affected?

Right now these compilers are considered by PP to not support variadic macros:

gccxml nvcc when cuda is being used PathScale Digital Mars and Symantec C++ bcc32 metrowerks sun/oracle C++ < version 5.12 ( current oracle C++ version is 12.6 ) HP aC++ when not using EDG MPW C++ PGI when not using EDG This doesn't sound that bad, as most of these compilers are dead, although I hope nvcc does support variadic macros nowadays.

I did discover that if gcc or clang is compiled at the C++03 level with -pedantic there will be a ton of warnings, and if with -pedantic-errros there will be a ton of errors for those warnings.

Don’t warning disabling pragmas *around preprocessor definitions* solve the issue?

Note that gcc supports push/pop pragmas only since gcc 4.6. Before that you can't disable a warning without affecting the user's code compilation. I'm also not sure disabling the warning around a macro *definition* works.