diff options
Diffstat (limited to 'libio/libioP.h')
| -rw-r--r-- | libio/libioP.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/libio/libioP.h b/libio/libioP.h index 8c75f15167..1c434ec3a1 100644 --- a/libio/libioP.h +++ b/libio/libioP.h @@ -817,7 +817,35 @@ extern int _IO_vscanf (const char *, va_list) __THROW; # endif #endif -extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf; +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) +/* See oldstdfiles.c. These are the old stream variables. */ +extern struct _IO_FILE_plus _IO_stdin_; +extern struct _IO_FILE_plus _IO_stdout_; +extern struct _IO_FILE_plus _IO_stderr_; + +static inline bool +_IO_legacy_file (FILE *fp) +{ + return fp == (FILE *) &_IO_stdin_ || fp == (FILE *) &_IO_stdout_ + || fp == (FILE *) &_IO_stderr_; +} +#endif + +/* Deallocate a stream if it is heap-allocated. Preallocated + stdin/stdout/stderr streams are not deallocated. */ +static inline void +_IO_deallocate_file (FILE *fp) +{ + /* The current stream variables. */ + if (fp == (FILE *) &_IO_2_1_stdin_ || fp == (FILE *) &_IO_2_1_stdout_ + || fp == (FILE *) &_IO_2_1_stderr_) + return; +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) + if (_IO_legacy_file (fp)) + return; +#endif + free (fp); +} #ifdef IO_DEBUG # define CHECK_FILE(FILE, RET) do { \ |