gawk 3.1.1 has bad configure check for mmap() on Solaris

[Drazen Kacar]

Hi,

Configure script for gawk 3.1.1 on Solaris 8 with Sun's compiler claims
that mmap() doesn't work. config.log reports this:

"configure", line 2900: identifier redeclared: malloc
        current : function() returning pointer to char
        previous: function(unsigned int) returning pointer to void :
                  "/usr/include/iso/stdlib_iso.h", line 105
cc: acomp failed for conftest.c

The problem is in the following lines in mmap configure check:

#ifdef __cplusplus
extern "C" { void *malloc(unsigned); }
#else
char *malloc();
#endif


Changing the declaration to "void *malloc();" fixes the problem.

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