-# fpurge.m4 serial 7
-dnl Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
+# fpurge.m4 serial 8
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
HAVE_FPURGE=1
# Detect BSD bug. Only cygwin 1.7 is known to be immune.
AC_CACHE_CHECK([whether fpurge works], [gl_cv_func_fpurge_works],
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
-]], [FILE *f = fopen ("conftest.txt", "w+");
- if (!f) return 1;
- if (fputc ('a', f) != 'a') return 2;
- rewind (f);
- if (fgetc (f) != 'a') return 3;
- if (fgetc (f) != EOF) return 4;
- if (fpurge (f) != 0) return 5;
- if (putc ('b', f) != 'b') return 6;
- if (fclose (f) != 0) return 7;
- if ((f = fopen ("conftest.txt", "r")) == NULL) return 8;
- if (fgetc (f) != 'a') return 9;
- if (fgetc (f) != 'b') return 10;
- if (fgetc (f) != EOF) return 11;
- if (fclose (f) != 0) return 12;
- if (remove ("conftest.txt") != 0) return 13;
- return 0;])],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <stdio.h>
+]],
+ [FILE *f = fopen ("conftest.txt", "w+");
+ if (!f)
+ return 1;
+ if (fputc ('a', f) != 'a')
+ { fclose (f); return 2; }
+ rewind (f);
+ if (fgetc (f) != 'a')
+ { fclose (f); return 3; }
+ if (fgetc (f) != EOF)
+ { fclose (f); return 4; }
+ if (fpurge (f) != 0)
+ { fclose (f); return 5; }
+ if (putc ('b', f) != 'b')
+ { fclose (f); return 6; }
+ if (fclose (f) != 0)
+ return 7;
+ if ((f = fopen ("conftest.txt", "r")) == NULL)
+ return 8;
+ if (fgetc (f) != 'a')
+ { fclose (f); return 9; }
+ if (fgetc (f) != 'b')
+ { fclose (f); return 10; }
+ if (fgetc (f) != EOF)
+ { fclose (f); return 11; }
+ if (fclose (f) != 0)
+ return 12;
+ if (remove ("conftest.txt") != 0)
+ return 13;
+ return 0;
+ ])],
[gl_cv_func_fpurge_works=yes], [gl_cv_func_fpurge_works=no],
[gl_cv_func_fpurge_works='guessing no'])])
if test "x$gl_cv_func_fpurge_works" != xyes; then