optimization/10423: -fvolatile switch not working in gcc 3.2-3 when using -O2
Zack Weinberg
zack@codesourcery.com
Wed Apr 16 18:03:00 GMT 2003
dberger@motorola.com writes:
> Compile with following using "gcc -O2 -fvolatile -S":
>
> void test(void)
> {
> *(char *)0x100 = 1;
> *(char *)0x100 = 1;
> *(char *)0x100 = 1;
> *(char *)0x100 = 1;
> }
Allow me to refer you to the release notes for gcc 3.4 (that will be):
GCC no longer accepts the options -fvolatile, -fvolatile-global and
-fvolatile-static. It is unlikely that they worked correctly in any
3.x release.
Note in particular the last sentence. You've just confirmed that it
doesn't work.
(to the list:) How about we remove these options from 3.2.3 and 3.3 as
well? It does not help anyone for them to be present but nonfunctional.
zw
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