TIP: Click on subject to list as thread! ANSI
echo: os2prog
to: Francois Thunus
from: Jonathan de Boyne Pollard
date: 1997-01-31 11:09:04
subject: redirection

FT>
  >  HdA> So how can i redirect my info (printf) to a file,
  >  HdA> when the program traps?
  >
  > try (f)pritf(stderr), look up atexit() if on your compiler
FT>

  Note:

  `atexit' is a function of the Standard C RTL, and doesn't necessarily
  map to an operating system function.  In many C++ compilers, `atexit'
  merely manipulates a table maintained by the RTL, which is scanned by
  the `exit' function.  If the program exits abnormally (as it does in
  Hank's case, with a SYS317x) then the `exit' function is not called (the
  `exit' function is _not_ a system API function).

  To catch abnormal program termination, one _must_ use an exception
  handler, or a RTL function that maps onto it (such as `signal' --
  although not all of the power of OS/2 exception handling is available
  through `signal').

  > JdeBP <
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