avr-gcc-12.1.0-x64-windows new warnings ?

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Hi,

I just tried avr-gcc 12.1.0 on an old project, and got some new warning I
can't explain.

The code is:

PORTC &= 0xFE ;  //clear bit 0.

and the warning is:
warning: array subscript 0 is outside array bounds of 'volatile uint8_t[0]'
{aka 'volatile unsigned char[]'} [-Warray-bounds]

What is this warning and what array is it referring to?

Thank you!

-- 
Best Regards,

-- Royce Pereira

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<div dir=3D"ltr">Hi,<div><br></div><div>I just tried avr-gcc 12.1.0 on an o=
ld project, and got some new warning I can&#39;t explain.</div><div><br></d=
iv><div>The code is:</div><div><br></div><div>PORTC &amp;=3D 0xFE ;=C2=A0 /=
/clear bit 0.<br></div><div><br></div><div>and the warning is:</div><div>wa=
rning: array subscript 0 is outside array bounds of &#39;volatile uint8_t[0=
]&#39; {aka &#39;volatile unsigned char[]&#39;} [-Warray-bounds]<br></div><=
div><br></div><div>What is this warning and what array is it referring=C2=
=A0to?</div><div><br></div><div>Thank you!</div><div><br></div><span class=
=3D"gmail_signature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_s=
ignature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">Best Regards,=
<div><br></div><div>-- Royce Pereira</div></div></div></div>

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