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[PATCH] libio: Use wmemset instead of __wmemset to avoid linknamespace issue


If the wide string operations are pulled into the link, the
wmemset symbol can cause a linknamespace failure.

2016-06-03  Florian Weimer  <fweimer@redhat.com>

	* libio/wstrops.c (_IO_wstr_overflow, enlarge_userbuf): Use
	__wmemset instead of wmemset.

diff --git a/libio/wstrops.c b/libio/wstrops.c
index 2b9d036..8d0e1cb 100644
--- a/libio/wstrops.c
+++ b/libio/wstrops.c
@@ -111,7 +111,7 @@ _IO_wstr_overflow (_IO_FILE *fp, _IO_wint_t c)
 	      fp->_wide_data->_IO_buf_base = NULL;
 	    }
 
-	  wmemset (new_buf + old_wblen, L'\0', new_size - old_wblen);
+	  __wmemset (new_buf + old_wblen, L'\0', new_size - old_wblen);
 
 	  _IO_wsetb (fp, new_buf, new_buf + new_size, 1);
 	  fp->_wide_data->_IO_read_base =
@@ -228,9 +228,9 @@ enlarge_userbuf (_IO_FILE *fp, _IO_off64_t offset, int reading)
      new position.  */
   assert (offset >= oldend);
   if (reading)
-    wmemset (wd->_IO_read_base + oldend, L'\0', offset - oldend);
+    __wmemset (wd->_IO_read_base + oldend, L'\0', offset - oldend);
   else
-    wmemset (wd->_IO_write_base + oldend, L'\0', offset - oldend);
+    __wmemset (wd->_IO_write_base + oldend, L'\0', offset - oldend);
 
   return 0;
 }


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