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From: Berger David-MGI2063 <dberger@motorola.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: RE: optimization/10423: -fvolatile switch not working in gcc 3.2- 3 when using -O2 Date: Wed, 16 Apr 2003 18:16:00 -0000 [thread overview] Message-ID: <20030416181600.26115.qmail@sources.redhat.com> (raw) The following reply was made to PR optimization/10423; it has been noted by GNATS. From: Berger David-MGI2063 <dberger@motorola.com> To: "'Zack Weinberg'" <zack@codesourcery.com> Cc: "'gcc-gnats@gcc.gnu.org'" <gcc-gnats@gcc.gnu.org>, "'gcc-bugs@gcc.gnu.org'" <gcc-bugs@gcc.gnu.org> Subject: RE: optimization/10423: -fvolatile switch not working in gcc 3.2- 3 when using -O2 Date: Wed, 16 Apr 2003 11:06:25 -0700 Why are they being removed ?!? Are you just going to break all the legacy programs out there? -----Original Message----- From: Zack Weinberg [mailto:zack@codesourcery.com] Sent: Wednesday, April 16, 2003 11:03 AM To: David Berger Cc: gcc-gnats@gcc.gnu.org; gcc-bugs@gcc.gnu.org Subject: Re: optimization/10423: -fvolatile switch not working in gcc 3.2-3 when using -O2 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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