inno setup - Pascal (Script) and exception control flow -

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i'm working pascalscript innosetup installer, , fail see control of following block flowing.

function foo(): string; begin   result := 'foo';   raiseexception('...'); end;  procedure test(); var   z : string; begin   z := '';   try     z := foo();   except     log(z);   end end;

my installer seems indicate z being set result of foo function. understanding of exceptions in 'most' programming languages tells me assignment z := foo() should not happen in case of exception.

when foo function raises, should z still assigned to?

probably handles result values reference implicit first argument. can happen. considered legal of codegeneration/optimization, since quite common way of handling return values.

however defined in object pascal outside testing delphi murky territory, since there x86 , x86_64 implementation. , delphi return value in eax, if follow logic illegal.

added later:

i tested delphi structured types, , while passes reference, creates copy on stack pass it.

this make hard optimize code structured types though, modifier/attribute declare return type const fix if ever needed.


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