Update iconv.m4 from gnulib.

* m4/iconv.m4: Update from gnulib-v0.1-2176-ga79f2a287.

diff --git a/m4/iconv.m4 b/m4/iconv.m4
index bdafc54e3097fc9ac9638cebbd182b57b5c8522f..877d8822dc492d41d1ec3bc3e9ded981a06082fe 100644 (file)
--- a/m4/iconv.m4
+++ b/m4/iconv.m4
@@ -1,5 +1,6 @@
-# iconv.m4 serial 20
-dnl Copyright (C) 2000-2002, 2007-2014, 2016 Free Software Foundation, Inc.
+# iconv.m4 serial 21
+dnl Copyright (C) 2000-2002, 2007-2014, 2016-2018 Free Software Foundation,
+dnl 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.
@@ -167,15 +168,27 @@ AC_DEFUN([AM_ICONV_LINK],
 #endif
   /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
      provided.  */
-  if (/* Try standardized names.  */
-      iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
-      /* Try IRIX, OSF/1 names.  */
-      && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
-      /* Try AIX names.  */
-      && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
-      /* Try HP-UX names.  */
-      && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
-    result |= 16;
+  {
+    /* Try standardized names.  */
+    iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP");
+    /* Try IRIX, OSF/1 names.  */
+    iconv_t cd2 = iconv_open ("UTF-8", "eucJP");
+    /* Try AIX names.  */
+    iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP");
+    /* Try HP-UX names.  */
+    iconv_t cd4 = iconv_open ("utf8", "eucJP");
+    if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1)
+        && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1))
+      result |= 16;
+    if (cd1 != (iconv_t)(-1))
+      iconv_close (cd1);
+    if (cd2 != (iconv_t)(-1))
+      iconv_close (cd2);
+    if (cd3 != (iconv_t)(-1))
+      iconv_close (cd3);
+    if (cd4 != (iconv_t)(-1))
+      iconv_close (cd4);
+  }
   return result;
 ]])],
           [am_cv_func_iconv_works=yes], ,