[tor-bugs] #31475 [Core Tor/Tor]: config: stop using atof()

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#31475: config: stop using atof()
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 Reporter:  nickm         |          Owner:  nickm
     Type:  defect        |         Status:  needs_revision
 Priority:  Low           |      Milestone:  Tor: 0.4.2.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  0.5
 Reviewer:                |        Sponsor:
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Comment (by nickm):

 I've added overflow/underflow detection to the branch.  I'm not checking
 for 0 or HUGE_VAL explicitly, but looking at the errno value instead.
 I've added tests to make sure it works.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31475#comment:7>
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