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Specifically mark the members of 'FILE' that are accessed via inline

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functions or macros since they are part of the public ABI as a result.

MFC after:	1 month
This commit is contained in:
John Baldwin 2008-04-17 19:06:00 +00:00
parent 1b164f3101
commit 7266fe16da
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=178282
1 changed files with 10 additions and 6 deletions
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16
include/stdio.h
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@ -98,15 +98,19 @@ struct __sFILEX;
* that does not match the previous one in _bf. When this happens,
* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
*
* Certain members of __sFILE are accessed directly via macros or
* inline functions. To preserve ABI compat, these members must not
* be disturbed. These members are marked below with (*).
*/
typedef struct __sFILE {
unsigned char *_p; /* current position in (some) buffer */
int _r; /* read space left for getc() */
int _w; /* write space left for putc() */
short _flags; /* flags, below; this FILE is free if 0 */
short _file; /* fileno, if Unix descriptor, else -1 */
unsigned char *_p; /* (*) current position in (some) buffer */
int _r; /* (*) read space left for getc() */
int _w; /* (*) write space left for putc() */
short _flags; /* (*) flags, below; this FILE is free if 0 */
short _file; /* (*) fileno, if Unix descriptor, else -1 */
struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
int _lbfsize; /* 0 or -_bf._size, for inline putc */
int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */
/* operations */
void *_cookie; /* cookie passed to io functions */