[Rd] C++ complains abouct Rprintf signature

[Prof Brian Ripley]

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It has ....

On Wed, 16 Apr 2008, Vadim Organovich wrote:

> Dear R-devel,
>
> My g++ complains about the first argument to Rprintf being non-const char *. For example when compiling the line
>
> Rprintf("hello world\n");
>
> the following warning is emitted:
> warning: deprecated conversion from string constant to 'char*'
>
>
>
> Is there a reason for the non-const? It is curious that Rf_error, which is similar to RPrintf, is const.
>
>
>
> If there is a need to keep it non-const in C please consider using the patch below in future releases.
>
>
>
> Thanks,
>
> Vadim
>
> Patch to R-2.6.1/include/R_ext/Print.h
>
> #ifdef  __cplusplus
> extern "C" {
> #define CONST const
> #endif
> void Rprintf(CONST char *, ...);
> void REprintf(CONST char *, ...);
> void Rvprintf(const char *, va_list);
> void REvprintf(const char *, va_list);
> #ifdef  __cplusplus
> }
> #undef CONST
> #endif
>
> 	[[alternative HTML version deleted]]
>
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>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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