I've bisected the issue (which still happens with only --enable-languages=c,c++ instead of --enable-languages=java), and 0a0c2c3f06227d46b5e9542dfdd4e0fd2d67d894 is the first bad commit apparently. I think I've done it wrong though, and that 7a42b1fa1a090ead96cc0f94a8060a9650c810d5 is the breaking change. Judging by the commit details, that seems likely, as it modifies what appears to be relevant code. I wonder why it didn't break bootstrap on upstream. On Mon, May 2, 2022 at 8:24 PM Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> wrote: > On Mon, 2022-05-02 at 20:02 +1000, Zopolis0 wrote: > > The thing is, that builds fine, but I havent changed anything to do > > with libstdc++-v3. > > Then maybe you've modified some compiler code common for languages and > cause GCC to misbehave on libstdc++ code (then stage 1 libstdc++ fails), > or maybe it causes GCC to miscompile itself and generate a compiler > misbehaving on libstdc++ code (so stage 2 libstdc++ fails). Or maybe > some modification to the building system causes libstdc++ built with > wrong CXXFLAGS. Who knows? We have no idea how the code is modified. > > > On Mon, May 2, 2022 at 7:29 PM Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> > > wrote: > > > On Mon, 2022-05-02 at 19:20 +1000, Zopolis0 via Gcc-help wrote: > > > > While trying to compile gcj, it breaks on a number of errors, many > > > > of which > > > > are along the lines of "no matching function for call to ‘operator > > > > new(sizetype, sizetype)". However, I have not touched this code, > > > > and this > > > > error does not appear on another branch which is a few months back > > > > from > > > > master. This leads me to believe that this is an error present on > > > > master, > > > > although I have not yet been able to locate the breaking commit. > > > > (Example > > > > of one such error:) > > > > > > Don't guess. Just build the unmodified trunk and if it fails > > > reports to > > > https://gcc.gnu.org/bugzilla. > > -- > Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> > School of Aerospace Science and Technology, Xidian University >
