X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fstrerror_r.c;h=1fa52d99da600dbf43e19cd46c23f9230296ef4f;hb=f9e83fd48cb5c5a0b5a65751710138d42c814402;hp=ec89762d72a1fef99fb98e950451db01ad19072c;hpb=1838494765155d7c9ac63832182cd4ef9f368bf5;p=gnulib.git

diff --git a/lib/strerror_r.c b/lib/strerror_r.c
index ec89762d7..1fa52d99d 100644
--- a/lib/strerror_r.c
+++ b/lib/strerror_r.c
@@ -1,6 +1,6 @@
 /* strerror_r.c --- POSIX compatible system error routine
 
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -24,10 +24,10 @@
 
 #include <errno.h>
 
-#if HAVE_DECL_STRERROR_R && !(__GLIBC__ >= 2) && !EXTEND_STRERROR_R
+#if HAVE_DECL_STRERROR_R && !(__GLIBC__ >= 2 || defined __UCLIBC__) && !EXTEND_STRERROR_R
 
 /* The system's strerror_r function is OK, except that its third argument
-   is 'int', not 'size_t'.  */
+   is 'int', not 'size_t', or its return type is wrong.  */
 
 # include <limits.h>
 
@@ -61,6 +61,11 @@ strerror_r (int errnum, char *buf, size_t buflen)
     else
       ret = strerror_r (errnum, buf, buflen);
   }
+# elif defined __CYGWIN__
+  /* Cygwin only provides the glibc interface, is thread-safe, and
+     always succeeds (although it may truncate). */
+  strerror_r (errnum, buf, buflen);
+  ret = 0;
 # else
   ret = strerror_r (errnum, buf, buflen);
 # endif
@@ -90,7 +95,7 @@ strerror_r (int errnum, char *buf, size_t buflen)
   return (ret < 0 ? errno : ret);
 }
 
-#elif __GLIBC__ >= 2 && HAVE___XPG_STRERROR_R /* glibc >= 2.3.4 */ && !EXTEND_STRERROR_R
+#elif (__GLIBC__ >= 2 || defined __UCLIBC__) && HAVE___XPG_STRERROR_R /* glibc >= 2.3.4 */ && !EXTEND_STRERROR_R
 
 int
 strerror_r (int errnum, char *buf, size_t buflen)
@@ -98,10 +103,10 @@ strerror_r (int errnum, char *buf, size_t buflen)
   extern int __xpg_strerror_r (int errnum, char *buf, size_t buflen);
 
   int ret = __xpg_strerror_r (errnum, buf, buflen);
-  return (ret < 0 ? errno : 0);
+  return (ret < 0 ? errno : ret);
 }
 
-#else /* (__GLIBC__ >= 2 ? !HAVE___XPG_STRERROR_R : !HAVE_DECL_STRERROR_R) || EXTEND_STRERROR_R */
+#else /* (__GLIBC__ >= 2 || defined __UCLIBC__ ? !HAVE___XPG_STRERROR_R : !HAVE_DECL_STRERROR_R) || EXTEND_STRERROR_R */
 
 # include "glthread/lock.h"