[sdcc-devel] [ sdcc-Bugs-658540 ] implicit integral promotion not working

[<no...@so...>]

Bugs item #658540, was opened at 2002-12-25 23:49
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Category: Icode generator
>Group: fixed
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Tzvetan Mikov (mikov)
>Assigned to: Johan Knol (johanknol)
Summary: implicit integral promotion not working

Initial Comment:
This is a followup to a recent bug I submitted. It has 
been fixed in 2.3.2, but unfortunately 2.3.2 seems to be 
broken in the reverse direction.

The code bellow should generate a full 16-bit result due 
to implicit integral promotion. 

unsigned func ( unsigned char a, unsigned char b )
{
  return a + b;
}

In 2.3.2 the promotion is not performed and the result is 
incorrectly truncated to 8-bits. 

Note: I remember seeing something in the 
documentation about deliberately disabling implicit 
integral promotion for efficiency reasons. I hope that I 
am mistaken, because it would be a very very very bad 
idea (tm). The correct way to address the issue of 
efficiency is by using typecasts, not by breaking the 
language (and lots of working code). At least, it should 
be a compiler option.


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>Comment By: Johan Knol (johanknol)
Date: 2002-12-28 15:25

Message:
Logged In: YES 
user_id=63512

fixed in SDCCast.c:1.150


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