[fpc-devel] "Ordinal expression expected" awkwardness
J. Gareth Moreton
gareth at moreton-family.com
Wed Jul 19 19:42:33 CEST 2023
So I've come across a bit of awkwardness with the compiler. I'm not
sure if it's a well-defined rule that I've overlooked, but in a
for-loop, you can't use a 64-bit control variable when compiling for
i386-win32 (and presumably other 32-bit platforms), but you can under
x86_64-win64. In my case, the upper bound is a 64-bit variable (of type
TConstExprInt... a record type in the compiler source), so downsizing is
not ideal (although I will likely put in code that will error out if the
upper bound is too large due to the risk of an malicious inputs causing
said bound to equal 2^63 - 1 or 2^64 - 1).
My example aside, should it be that there's a situation where pure Free
Pascal code can build on a 64-bit compiler but not a 32-bit compiler?
IFpermitting 64-bit control variables is too difficult for 32-bit
systems, should they be forbidden entirely or at least throw a warning?
P.S. As the title implies, trying to use a QWord or Int64 as a for-loop
control variable under i386-win32 causes an "Ordinal expression
expected" error, but compiles without incident on x86_64-win64.
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