[tor-bugs] #29662 [Core Tor/Tor]: Introduce assert functions that allow us to printf error message

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#29662: Introduce assert functions that allow us to printf error message
------------------------------------------------+--------------------------
 Reporter:  rl1987                              |          Owner:  rl1987
     Type:  enhancement                         |         Status:
                                                |  needs_review
 Priority:  Medium                              |      Milestone:  Tor:
                                                |  0.4.1.x-final
Component:  Core Tor/Tor                        |        Version:
 Severity:  Normal                              |     Resolution:
 Keywords:  asn-merge, nickm-merge, teor-merge  |  Actual Points:
Parent ID:                                      |         Points:
 Reviewer:  ahf                                 |        Sponsor:
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Comment (by rl1987):

 Replying to [comment:11 rl1987]:
 > Replying to [comment:10 nickm]:
 > > Can the "Non-fatal assertion %s failed" lines be reached with `extra
 == NULL`?  I think it can, and I think that's a bug.
 > >
 >
 > That preserves the old code behavior (for no `expr` and variable
 arguments, thus `extra == NULL`) and enables using the same functions for
 `tor_assert{_nonfatal}()` and the new `tor_assertf{_nonfatal}()` macros.
 Unless I'm missing something here?

 Fixed in 53192a6467771abddee08e7e8256f43d935037e9 after talking about this
 on IRC.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29662#comment:13>
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