https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61913
--- Comment #9 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- (In reply to Marek Polacek from comment #8) > (In reply to Manuel López-Ibáñez from comment #6) > > (In reply to Marek Polacek from comment #5) > > > (In reply to Manuel López-Ibáñez from comment #4) > > > > It is pretty strange that you need a Var() if it is not used anywhere. > > > > > > It is, we have a bug for it: PR61480. > > > > But there is no Init(1) there. In fact, I doubt Wodr is enabled by default > > as the documentation says without Init(1). > > I guess it doesn't matter whether there's Init() or not then. It doesn't seem to be the same bug at all. The other one does not ICE, just ignores -Wno-. I understand why -Wno- is ignored, but I don't understand why it -Wodr ICEs without Var(). > > > The issue is that lto.exp does not allow to scan for 'warning:'. > > > > Isn't that a bug/missing feature? It seems crucial if one wants to add > > warnings/errors generated by LTO. > > It certainly is a deficiency. It seems quite a major deficiency if we are going to keep adding warnings to LTO, which are never tested and there is a high chance they are not working at all. Is there a PR about it? Is Jan or someone else working on it? > > In particular, the manual does not show Wodr: > > https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#Warning-Options > > The description is there (after -Wno-overflow), but @item is missing, so the > warning name isn't listed there. I'll add it. I added the correct entry in my review. You could use that. It fixes several deficiencies with the current entry.
