[sdcc-devel] [ sdcc-Bugs-1609244 ] function return value mismatch

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Bugs item #1609244, was opened at 2006-12-05 15:19
Message generated for change (Comment added) made by maartenbrock
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Category: C-Front End
>Group: fixed
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Maarten Brock (maartenbrock)
>Assigned to: Maarten Brock (maartenbrock)
Summary: function return value mismatch

Initial Comment:
Compiling the following code generates two warnings and finally broken code:

typedef char * PCHAR;

char KAR;

PCHAR foo(void) reentrant   //this fails
{
    return &KAR;
}

PCHAR bar(void)             // this is ok
{
    return &KAR;
}

sdcc -c bug.c

bug.c:7: warning 60: function return value mismatch from type 'char near* '
to type 'char generic*  unknown type'
bug.c:5: warning 59: function 'foo' must return value

Used SDCC 2.6.1 #4471

;------------------------------------------------------------
;	bug.c:5: PCHAR foo(void) reentrant   //this fails
;	-----------------------------------------
;	 function foo
;	-----------------------------------------
_foo:
;	bug.c:7: return &KAR;  <<<<< NO CODE GENERATED
;	Peephole 300	removed redundant label 00101$
	ret
;------------------------------------------------------------
;Allocation info for local variables in function 'bar'
;------------------------------------------------------------
;------------------------------------------------------------
;	bug.c:10: PCHAR bar(void)             // this is ok
;	-----------------------------------------
;	 function bar
;	-----------------------------------------
_bar:
;	bug.c:12: return &KAR;
;	genRet
;	Peephole 182.a	used 16 bit load of DPTR
	mov	dptr,#_KAR
	mov	b,#0x40
;	Peephole 300	removed redundant label 00101$
	ret

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

>Comment By: Maarten Brock (maartenbrock)
Date: 2006-12-06 18:04

Message:
Logged In: YES 
user_id=888171
Originator: YES

Fixed in SDCC 2.6.2 #4503.

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

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100599&aid=1609244&group_id=599