(0005428)
alanc (reporter)
2021-08-03 19:19
|
Thanks, I was unaware that asprintf() had been specified in that ISO TR.
Of the above listed implementations, all but GNU libc document that they will
set *ptr to NULL on error, while GNU libc explicitly states that you cannot
rely on it to do so (and looking at its code, sometimes it does, sometimes
it doesn't). |
(0005543)
nick (manager)
2021-12-05 12:48
edited on: 2021-12-09 16:39
|
(Bugnote updated after the 2021-12-09 teleconference):
Add pointer page for asprintf referencing fprintf.
Add pointer page for vasprintf referencing vfprintf.
On p909 line 30737 add asprintf to the title line.
On P 909, before line 30740, add
[CX]<tt>int asprintf(char ** restrict ptr, const char * restrict format, ...);</tt>
(the next line, dprintf() is already CX shaded, so this extends the shading backwards).
On line 30747, change
Excluding dprintf( ):
to
Excluding asprintf() and dprintf():
Before line 30754 insert a new paragraph, CX shaded:
The asprintf() function shall be equivalent to sprintf(),
except that the output string shall be written to dynamically allocated memory, allocated as if by a call to malloc(), of sufficient length to hold the resulting string, including a terminating null byte. If the call to asprintf() is successful, the address of this dynamically allocated string shall be stored in the location referenced by ptr.
Before line 31016, Add a new paragraph, CX shaded:
Upon successful completion, the asprintf() function shall return the number of bytes written to
the allocated string stored in the location referenced by ptr, excluding the terminating null byte.
At line 31021 append a sentence CX shaded:
For asprintf(), if memory allocation was not possible, or if some other
error occurs, the function shall return a negative value, and the contents of
ptr are undefined, but shall not refer to allocated memory.
Before line 31032 add:
[CX]The asprintf() function shall fail if:
[ENOMEM] Insufficient storage space is available.[/CX]
Add CX shading to lines 31032-33.
On page 920, APPLICATION USAGE, after line 31260 add a new paragraph:
The space allocated by a successful call to asprintf() should be subsequently freed
by a call to free().
On page 2212, line 70651 add vasprintf to the title line.
Insert before line 70655 (extending the CX shading backwards a line)
[CX]
<tt>int vasprintf(char ** restrict ptr, const char * restrict format, va_list arg);</tt>
At line 70666, change
The [CX]vdprintf()[/CX], ...
to
The [CX]vasprintf(), vdprintf()[/CX], ...
At line 70667, change
[CX]dprintf()[/CX], ...
to
[CX]asprintf(), dprintf()[/CX], ...
Note:
Though the ISO TR includes aswprintf, no current implementations appear to
provide this, so it is not included here. Additionally, such functionality
is available using open_wmemstream, so invention here is really unecessary.
|
tr24731-2.pdf [^] (81,033 bytes) 2021-12-02 16:17 
