New upstream version 1.9

[debian/gzip] / m4 / fpurge.m4

diff --git a/m4/fpurge.m4 b/m4/fpurge.m4
index 0dd19f3b974edc4befbdc9773965ada61852e88f..99d1fc4d0bbca7663d1138c414a6f14e8d7880f9 100644 (file)
--- a/m4/fpurge.m4
+++ b/m4/fpurge.m4
@@ -1,5 +1,5 @@
-# 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.
@@ -14,23 +14,40 @@ AC_DEFUN([gl_FUNC_FPURGE],
     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