On Sat, 21 Mar 2015 22:37:58 +0200, Binyamin Dissen wrote:
>I cannot seem to force fixed point overflow under PL/1. Specified (FOFL) as a
>statement qualifier and it does not seem to affect the compile.
>
I believe I've read (perhaps even in these pages) that:
o The C standard states:
- The value resulting from an operation on signed operands when
the mathematical result is outside the value set of the result time
is implementation-defined.
- It does not state that an error is allowed to occur.
- Many C programmers rely on the assumption that no error will
be reported, perhaps even assuming it will be treated modulo(
cardinality( value set ) ).
o The C compiler and runtime are coming increasingly to share
code with PL/1, so in order to accommodate the C carelessness
the common compiler backend and runtime no longer report
integer overflows.
I'm dismayed. But I'm likewise dismayed that HLASM tolerates
division by zero in assembly-time arithmetic.
--gil
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