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Avoid a fault from locking a closed standard file. 

* 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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12
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
@ -1553,8 +1559,8 @@
be in sync with current kernels. be in sync with current kernels.
2008-11-20 Ken Werner <ken.werner@de.ibm.com> 2008-11-20 Ken Werner <ken.werner@de.ibm.com>
Patrick Mansfield <patmans@us.ibm.com> Patrick Mansfield <patmans@us.ibm.com>
Joel Schopp <jschopp@austin.ibm.com> Joel Schopp <jschopp@austin.ibm.com>
* libc/machine/spu/configure.in: Add __ea detection. * libc/machine/spu/configure.in: Add __ea detection.
* libc/machine/spu/Makefile.am: Add new files. * libc/machine/spu/Makefile.am: Add new files.
@ -2347,7 +2353,7 @@
* libc/machine/spu/Makefile.am: Add new files. * libc/machine/spu/Makefile.am: Add new files.
* libc/machine/spu/Makefile.in: Likewise. * libc/machine/spu/Makefile.in: Likewise.
* libc/machine/spu/include/spu_timer.h: New file to add timer support * libc/machine/spu/include/spu_timer.h: New file to add timer support
using interrupts. using interrupts.
* libc/machine/spu/spu_clock_stop.c: Likewise. * libc/machine/spu/spu_clock_stop.c: Likewise.
* libc/machine/spu/spu_clock_svcs.c: Likewise. * libc/machine/spu/spu_clock_svcs.c: Likewise.
* libc/machine/spu/spu_timer_flih.S: Likewise. * libc/machine/spu/spu_timer_flih.S: Likewise.

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;