[Mesa-dev] [PATCH] i965: Use new/delete instead of realloc() in brw_ir_allocator.h

Francisco Jerez currojerez at riseup.net
Wed Feb 11 09:30:48 PST 2015

Matt Turner <mattst88 at gmail.com> writes:

> On Wed, Feb 11, 2015 at 9:16 AM, Francisco Jerez <currojerez at riseup.net> wrote:
>> Matt Turner <mattst88 at gmail.com> writes:
>>> On Wed, Feb 11, 2015 at 6:37 AM, Juha-Pekka Heikkila
>>> <juhapekka.heikkila at gmail.com> wrote:
>>>> There is no error path available thus instead of giving
>>>> realloc possibility to fail use new which will never
>>>> return null pointer and throws bad_alloc on failure.
>>> The problem was that we weren't checking if realloc failed.
>>> Why is the solution to change from malloc/free to new/delete?
>> The new operator is guaranteed not to return NULL by the C++ standard.
>> Aside from that Juha-Pekka's code seems more idiomatic to me than
>> calling realloc() from a C++ source file, but that might just be a
>> matter of taste.
> But new will throw an exception if it fails, right? Presumably under
> the same conditions as malloc/realloc returning NULL (i.e., being out
> of address space).

Yeah, so this patch doesn't really handle the out of memory condition.
According to Juha-Pekka it silences a Klocwork warning and IMHO it
improves code-style slightly.  But, sure, if it actually happens it's
just trading one kind of failure for another.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 212 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/mesa-dev/attachments/20150211/b4fcde61/attachment.sig>

More information about the mesa-dev mailing list