It seems that dmc.exe uses C99 rules for default type of a decimal literal, even if -A90 option is used.

The assert(-1 == 4294967295); fails regardless of -A option, although
it should pass on C90 compilers (assuming 32-bit long). The reason of
different behavior is that C90 takes RHS as uint32, while C99 assume
it int64.
Besides, probably -A90 allows another C99 features (like initial
declaration in a 'for' loop), so I wonder, does -A90 is supported?

Andrey wrote:
> It seems that dmc.exe uses C99 rules for default type of a decimal
> literal, even if -A90 option is used.
> 
> The assert(-1 == 4294967295); fails regardless of -A option, although
> it should pass on C90 compilers (assuming 32-bit long). The reason of
> different behavior is that C90 takes RHS as uint32, while C99 assume
> it int64.
> Besides, probably -A90 allows another C99 features (like initial
> declaration in a 'for' loop), so I wonder, does -A90 is supported?
> 

Sorry, -A90 is incompletely supported at best.