Avoid running into nonexistent system calls repeatedly.

[gnulib.git] / ChangeLog

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 2009-08-23  Bruno Haible  <bruno@clisp.org>
 
+       * lib/dup3.c (dup3): Test only once whether the system actually exists.
+       * lib/pipe2.c (pipe2): Likewise.
+       Suggested by Eric Blake.
+
+2009-08-23  Bruno Haible  <bruno@clisp.org>
+
        Tolerate declared but missing dup3 syscall.
        * lib/dup3.c (dup3): Invoke original dup3 function first, if available.
        * lib/unistd.in.h (dup3): If the function is already present,