Why does IRA force all pseudos live across a setjmp call to be spilled?

Sun Mar 4 17:39:00 GMT 2018

On MÃ¤r 04 2018, Peter Bergner <bergner@vnet.ibm.com> wrote:

> Clearly returning from the function that calls
> setjmp before calling longjmp must be illegal, since that would result
> in clobbering of the stack frame the longjmp would attempt to restore to.
> I don't know off hand who/what states that restriction.

7.13.2.1#2 ... if the function containing the invocation of the setjmp
macro has terminated execution in the interim, ... the behavior is
undefined.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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