[sdcc-devel] [ sdcc-Bugs-1065458 ] mishandling of "short" return value

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

Bugs item #1065458, was opened at 2004-11-13 00:42
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100599&aid=1065458&group_id=599

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Stas Sergeev (stsp)
Assigned to: Nobody/Anonymous (nobody)
Summary: mishandling of "short" return value

Initial Comment:
Hi.

This bug was recently introduced in CVS.
The following code (attached):
---
unsigned short f()
{
  return 0xff00;
}
 
unsigned short main()
{
  return f() ? 1 : 0;
}
---
returns 0 instead of 1.

The asm code at fault is this:
---
        lcall   _f
        mov     a,dpl
;     genIfx
;       Peephole 105    removed redundant mov
;       Peephole 177.c  removed redundant move
        mov     b,a      <---- BUG
        orl     a,b
---

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100599&aid=1065458&group_id=599