[GRASS-dev] Re: [GRASS GIS] #66: v.out.svg: Standardise the `type' option interpretation

[GRASS GIS]

#66: v.out.svg: Standardise the `type' option interpretation
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  Reporter:  1gray        |       Owner:  grass-dev at lists.osgeo.org
      Type:  enhancement  |      Status:  new                      
  Priority:  minor        |   Milestone:  7.0.0                    
 Component:  default      |     Version:  unspecified              
Resolution:               |    Keywords:                           
  Platform:  Unspecified  |         Cpu:  Unspecified              
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Comment (by glynn):

 Replying to [comment:3 1gray]:

 > > You can implicitly cast {{{char *}}} to {{{const char *}}}, but not
 with additional levels of indirection. In theory, a {{{const char *}}}
 could be wider than a {{{char *}}}, so you can cast these types, but not
 pointers to them.
 >
 > Is this actually permitted by some standard (either C89 or C99)?

 Is what permitted? Implicit casts or pointer size varying depending upon
 whether the target is "const"? The answers are "sometimes" and "yes"
 respectively, for both C89 and C99.

 > > {{{char * const *}}} should work.
 >
 > Do I understand it correctly that it means variable pointer to constant
 pointer to variable character data?

 Yes.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/66#comment:4>
GRASS GIS <http://grass.osgeo.org>