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Avoid a fault from locking a closed standard file.

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* libc/stdio/fflush.c (_fflush_r): Give up early if stream has
been previously closed.
This commit is contained in:
Eric Blake 2009-07-22 02:17:12 +00:00
parent dc176ff60c
commit d6438f13d1
2 changed files with 14 additions and 5 deletions
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newlib/ChangeLog
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@ -1,3 +1,9 @@
2009-07-22 Eric Blake <ebb9@byu.net>
Avoid a fault from locking a closed standard file.
* libc/stdio/fflush.c (_fflush_r): Give up early if stream has
been previously closed.
2009-07-09 Craig Howland <howland@LGSInnovations.com> 2009-07-09 Craig Howland <howland@LGSInnovations.com>
* libm/math/ef_scalb.c: Replace isnanf() (pre-C99 function call) with * libm/math/ef_scalb.c: Replace isnanf() (pre-C99 function call) with

3
newlib/libc/stdio/fflush.c
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@ -93,6 +93,9 @@ _DEFUN(_fflush_r, (ptr, fp),
CHECK_INIT (ptr, fp); CHECK_INIT (ptr, fp);
if (!fp->_flags)
return 0;
_flockfile (fp); _flockfile (fp);
t = fp->_flags; t = fp->_flags;