🚀 go-pugleaf

/*
    The following trivial function demonstrates a bug in gcc v1.32 for
    a 68020 running SunOS 4.0.1
    
    When compiled by gcc v1.32 without any optimisation, the compiler 
    produces the following code, which appears to be correct.

#NO_APP
gcc_compiled.:
.text
	.even
.globl _fred
_fred:
	link a6,#-4
	moveb a6@(11),a6@(-1)
L1:
	unlk a6
	rts
   
    When compiled with "-O", it produces the following code, which extracts 
    the MSB of the parameter rather than the LSB.

#NO_APP
gcc_compiled.:
.text
	.even
.globl _fred
_fred:
	link a6,#-4
	moveb a6@(8),d0
	moveb d0,a6@(-1)
	unlk a6
	rts
*/

fred( int j )
    {
    volatile char x;

    x = j;
    }