[sdcc-devel] [ sdcc-Bugs-612044 ] Crash when running sdcc - new

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

Bugs item #612044, was opened at 2002-09-20 02:43
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Category: msc51(8051) target
Group: None
>Status: Closed
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Crash when running sdcc - new

Initial Comment:
ralloc.c line 2391:

  if ( (IC_LEFT(uic)->key == IC_RESULT(ic)->key &&
	operandUsesAcc(IC_RIGHT(uic))) ||
       (IC_RIGHT(uic)->key == IC_RESULT(ic)->key &&
	operandUsesAcc(IC_LEFT(uic))) ) 
    return;

IC_LEFT(uic) is NULL when this is called causing an 
exception.

New bug caused by changes in last week.

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>Comment By: Jesus Calvino-Fraga (jesusc)
Date: 2002-09-21 14:28

Message:
Logged In: YES 
user_id=603650

This bug was fixed by Wim Lewis on Sep 20.  The comment 
in the CVS reads:

"Test pointer for NULL *before* dereferencing it, not 
immediately after (fix crash reported by Jesus Calvino-Fraga)"


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Comment By: Graham Barnett (grahamjb)
Date: 2002-09-21 02:35

Message:
Logged In: YES 
user_id=580774

No exception on code snapshot of 1st September 2002.
Exception when running SDCC built from cvs code as of 20 
September 2002.


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