I have a couple ATA drivers that spit out "foo might be used
uninitialized" warnings. Rather than the usual gcc nonsense, it turns
out that the code follows this pattern:
type_t foo;
if (condition 1)
foo = x;
else if (condition 2)
foo = y;
else
BUG();
It doesn't warn on other platforms, so I dug into the BUG() code on x86,
and discovered that it is missing the 'noreturn' attribute found in
other BUG() definitions.
Being rusty on the gcc asm syntax -- does an inline asm statement permit
'noreturn'? -- I figured it would be best just to report this, rather
than create a patch myself.
Jeff
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