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Remove memory leak in fdopen (bug 31840)

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Deallocate the memory for the FILE structure when seeking to the end fails
in append mode.

Fixes: ea33158c96 ("Fix offset caching for streams and use it for ftell (BZ #16680)")
This commit is contained in:
Andreas Schwab 2024-06-04 11:01:11 +02:00
parent 1d441791cb
commit b2c3ee3724
1 changed files with 5 additions and 1 deletions
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4
libio/iofdopen.c
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@ -156,8 +156,12 @@ _IO_new_fdopen (int fd, const char *mode)
{ {
off64_t new_pos = _IO_SYSSEEK (&new_f->fp.file, 0, _IO_seek_end); off64_t new_pos = _IO_SYSSEEK (&new_f->fp.file, 0, _IO_seek_end);
if (new_pos == _IO_pos_BAD && errno != ESPIPE) if (new_pos == _IO_pos_BAD && errno != ESPIPE)
{
_IO_un_link (&new_f->fp);
free (new_f);
return NULL; return NULL;
} }
}
return &new_f->fp.file; return &new_f->fp.file;
} }
libc_hidden_ver (_IO_new_fdopen, _IO_fdopen) libc_hidden_ver (_IO_new_fdopen, _IO_fdopen)