[bug #14684] make fails if LC_CTYPE is iso_8859_1

[DAvid Byers]

Follow-up Comment #8, bug #14684 (project make):

On Solaris 10, with LC_CTYPE set to iso_8859_1, isblank returns zero for
isblank('\t'), which (at least for me) causes the problem described in the
original report.

The following program demonstrates the issue:

#include <stdio.h>
#include <ctype.h>
#include <locale.h>

int main(int argc,char** argv) {
  setlocale(LC_ALL,"");
  printf("isblank=%d\n", isblank('\t'));
}

This behavior seems to be consistent, and it seems to be a bug in Solaris
rather than in make. I wonder, though, if make should maybe check for a
working isblank in the configure script?


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