Marcus Binny <marcusbinny@xxxxxxxxx> writes: >> >> They don't. They have been broken since GCC 3.0 and >> will be removed >> entirely in GCC 3.4. >> > what about 2.97? There never was an official 2.97 release. You could be talking about any development snapshot released from mid-2000 through mid-2001. 2.95 is the last major official release in which the -fvolatile options are known to have worked. We do not know, nor do we care, precisely what change broke them. zw