osmo-pcu[master]: Fix EGPRS DL window calculation during tbf update

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Neels Hofmeyr gerrit-no-reply at lists.osmocom.org
Tue Sep 13 23:42:39 UTC 2016


Patch Set 4: Code-Review-1

(1 comment)

fine except for the luring null pointer segfault

https://gerrit.osmocom.org/#/c/798/4/src/tbf.cpp
File src/tbf.cpp:

Line 380: 		gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(this);
If this happens to not be a dl_tbf instance, as_dl_tbf()
will return NULL. You need to guard against that.

side note:

In puristic C++ thought, this is a bit ugly: adding child class
functionality in the base class is Not Good (tm). But class
gprs_rlcmac_tbf seems to have been designed this way...
So I guess it's not your fault, and on the plus side this
avoids the overhead of virtual functions.

"Class inheritance is highly overrated"


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Gerrit-MessageType: comment
Gerrit-Change-Id: I41aa807068520460fd665a55e3529e60f6bbb630
Gerrit-PatchSet: 4
Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Owner: arvind.sirsikar <arvind.sirsikar at radisys.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: arvind.sirsikar <arvind.sirsikar at radisys.com>
Gerrit-HasComments: Yes



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