On Sat, 1 Mar 2008, Joseph S. Myers wrote: > On Sat, 1 Mar 2008, Richard Guenther wrote: > > > This is a request to depcrecate -ftrapv which has numerous problems > > making it not work as expected since a long time. As nobody seems > > to have the energy to ensure it is working I propose to deprecate it > > for GCC 4.3 to make it possible to remove it during 4.4 (and not > > block removing libcall notes by it). > > > > Ok for 4.3? I'll prepare an entry for the changes.html as well. > > If this does need to be deprecated (and it's a feature for which I hope > someone will step forward to fix or reimplement it, since we know people > have used it to find integer overflow bugs in their code, despite its > known limitations), it should give a deprecation warning on all > compilations using the option, not just be deprecated in documentation.
I seriously doubt anyone has used it for anything useful since at least the advent of tree-ssa. I see we for example warn for -fforce-mem in 4.2, but that is a no-op there. Do we have an option to disable such warnings? After all it would break -Werror. Richard.
