[Mpi-forum] Compile problems with examples in MPI Standard

[Dries Kimpe]

* William Gropp <wgropp at illinois.edu> [2012-07-24 10:27:43]:

> Here's the test case for everyone.  No const.

> int MPI_Init( int *argc_p, char *((*argv_p)[]) );
> int main( int argc, char *argv[] )
> { 
>      MPI_Init( &argc, &argv );
>      return 0;
> }  

> This gives a warning with my gcc:

> GroppsMac3:MPI-3.0 gropp$ gcc -c f1.c
> f1.c: In function ‘main’:
> f1.c:4: warning: passing argument 2 of ‘MPI_Init’ from incompatible pointer type

gcc 4.5.3 gives the reason for the warning in more detail:

t.c: In function ‘main’:
t.c:5:6: warning: passing argument 2 of ‘MPI_Init’ from incompatible pointer type
t.c:2:5: note: expected ‘char * (*)[]’ but argument is of type ‘char ***’

   Dries
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