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-rw-r--r--libio/strops.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libio/strops.c b/libio/strops.c
index 9fa48eadc3..ee2ed16c51 100644
--- a/libio/strops.c
+++ b/libio/strops.c
@@ -88,7 +88,7 @@ DEFUN(_IO_str_init_static, (fp, ptr, size, pstart),
   if (pstart)
     {
       fp->_IO_write_ptr = pstart;
-      fp->_IO_write_end = ptr+size;
+      fp->_IO_write_end = pstart;
       fp->_IO_read_end = pstart;
     }
   else
@@ -158,7 +158,7 @@ DEFUN(_IO_str_overflow, (fp, c),
 	  fp->_IO_write_ptr = new_buf + (fp->_IO_write_ptr - old_buf);
 
 	  fp->_IO_write_base = new_buf;
-	  fp->_IO_write_end = fp->_IO_buf_end;
+	  fp->_IO_write_end = new_buf + (fp->_IO_write_end - old_buf);
 	}
     }