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Re: Question about POSIX libgcj signals / exception handling



On Mar 11, 2006, at 1:08 AM, David Daney wrote:


SIGSEGV gets converted to NullPointerException. This is unconditional it happens even if the faulting location is far away from address zero. Native code is not treated any differently than the java code. Any SIGSEGV is converted to NPE.

This is not true for the PPC OS X implementation. Only null pointer accesses are
converted to NPEs.


The rest of David's analysis applies, well except for the SIGFPE part for integer math.
On PPC (and most other targets), function calls are made for divides as the target
does not raise a trap for undefined code unlike x86.


-- Pinski


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