labath added a comment. In D88728#2315648 <https://reviews.llvm.org/D88728#2315648>, @MaskRay wrote:
> LGTM. Worth mentioning that this will be in POSIX issue 8 > https://www.austingroupbugs.net/bug_view_page.php?bug_id=508 Oh, cool. I didn't know posix is still being worked on :P ================ Comment at: lldb/source/Host/common/PseudoTerminal.cpp:149 + int r = ptsname_r(m_primary_fd, buf, sizeof(buf)); + assert(r == 0); + return buf; ---------------- MaskRay wrote: > labath wrote: > > MaskRay wrote: > > > MaskRay wrote: > > > > labath wrote: > > > > > mgorny wrote: > > > > > > labath wrote: > > > > > > > mgorny wrote: > > > > > > > > I would really feel better with a real error handling here. It > > > > > > > > shouldn't be hard to use `ErrorOr` here. > > > > > > > Yeah, but what are you going to do with that value? Pass it to > > > > > > > the caller? The existing callers are ignoring the error return > > > > > > > anyway, and I don't want to add error handling everywhere as > > > > > > > afaict, this function can't fail unless the user messes up the > > > > > > > master state (which is not something I want to support). > > > > > > I get your point but I've literally wasted days because of missing > > > > > > error handling, so I'd really preferred if we wouldn't make it even > > > > > > worse. Though I guess `assert` is good enough. > > > > > In some ways it's even better because it will point you straight to > > > > > the place where the assumption is violated, whereas a propagated > > > > > logic error can manifest itself much farther away (or not at all). :) > > > > If `ptsname/ptsname_r` fails, buf will be uninitialized and trigger a > > > > use-of-uninitialized-value error. > > > ... in a -DLLVM_ENABLE_ASSERTIONS=off build. > > > > > > This probably still needs some protection. > > What kind of protection did you have it mind? Initialize the buffer to an > > empty string? > In the case of a non-zero return value, `buf[0] = '\0'` is probably > sufficient to avoid an uninitialized value. sounds good. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D88728/new/ https://reviews.llvm.org/D88728 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
