[haiku-bugs] Re: [Haiku] #6704: SIGBUS and SIGSEGV must be different
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Sat, 09 Oct 2010 12:10:53 -0000
#6704: SIGBUS and SIGSEGV must be different
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Reporter: scottmc | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/POSIX | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Has a Patch: 0
Platform: All | Blocking:
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Comment (by bonefish):
Replying to [comment:3 phoudoin]:
> Can't we raise SIGBUS too when SIGSEGV signal is raised, making SIGBUS
an alias of SIGSEGV but allowing two signal handlers as required by POSIX?
The problem is that SIGSEGV == SIGBUS (i.e. the constants are equal).
Redefining SIGBUS and actually raising the signal could be a binary
compatibility issue, since old applications might expect that the signal
is never thrown -- though I suspect there aren't that many programs that
actually handle these signals anyway (at least all ported code could be
updated accordingly). Redefining it and not raising it might work, but the
signals do have a different meaning (cf.
[http://www.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html the
specs]), so it would make most sense to implement them correctly.
--
Ticket URL: <http://dev.haiku-os.org/ticket/6704#comment:4>
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