I don’t think we ever received a reproducer for this that would allow us to investigate this (or write a fix).
- Raphael > On 8. Dec 2019, at 23:02, Vadim Chugunov via lldb-dev > <lldb-dev@lists.llvm.org> wrote: > > Looks like I am hitting the same issue. Was there a fix checked in for this? > > On Thu, Mar 7, 2019 at 3:05 PM Raphael Isemann via lldb-dev > <lldb-dev@lists.llvm.org <mailto:lldb-dev@lists.llvm.org>> wrote: > You can also dump() the AST to a file on disk if that is easier to > capture than stderr. See the overload of `dump()` that takes a stream: > https://clang.llvm.org/doxygen/ASTDumper_8cpp_source.html#l00225 > <https://clang.llvm.org/doxygen/ASTDumper_8cpp_source.html#l00225> > > - Raphael > > Am Do., 7. März 2019 um 19:20 Uhr schrieb Ben Ruthig <brut...@google.com > <mailto:brut...@google.com>>: > > > > Hey Raphael, > > > > Yes, you did advise me to drop a D->dumpColor() call in to > > getASTRecordLayout(). For frustrating reasons I still haven't been able to > > capture those logs but when I do I will report back. > > > > Thanks so much for your help and quick response! > > > > Ben > > > > On Thu, Mar 7, 2019 at 12:56 PM Raphael Isemann <teempe...@gmail.com > > <mailto:teempe...@gmail.com>> wrote: > >> > >> Hi Ben, > >> > >> I think I already answered this last week: > >> http://lists.llvm.org/pipermail/lldb-dev/2019-February/014789.html > >> <http://lists.llvm.org/pipermail/lldb-dev/2019-February/014789.html> > >> > >> I don't think you'll get an answer here without posting the > >> problematic source or giving any more information as I described in my > >> mail. > >> > >> Cheers, > >> - Raphael > >> > >> Am Do., 7. März 2019 um 18:13 Uhr schrieb Ben Ruthig via lldb-dev > >> <lldb-dev@lists.llvm.org <mailto:lldb-dev@lists.llvm.org>>: > >> > > >> > Hello all, > >> > > >> > I am currently investigating an issue where LLDB is crashing due to a > >> > stack overflow when attempting to evaluate an expression. I have seen > >> > the same issue in 6.0.1 and have reproduced it in 7.0.1. Any help to > >> > diagnose and fix would be greatly appreciated as I am trying to meet a > >> > release deadline early next week! > >> > > >> > The facts: > >> > - The expression being evaluated is not a valid expression in the C++ > >> > domain. For example the expression is a datatype like 'Foobar'. (For > >> > reasons unexplained I am constrained to supporting this use case.) > >> > - The crash occurs when using the C++ LLDB API but not when trying to > >> > evaluate the expression via the LLDB shell or the LLDB Python script > >> > shell. However, when doing 'expr Foobar' there is no output and the > >> > operation is completely silent. It is similar when trying to do > >> > 'lldb.frame.EvaluateExpression("Foobar")' in the Python shell as well. > >> > I would expect to get some error output or an SbValue in an error state > >> > but no such luck. > >> > - I was able to capture a stack trace (attached) and it seems to be a > >> > recursive loop bottoming out. For brevity two 'loops' of stacktrace are > >> > included here: > >> > > >> > 3387. liblldb.dll!clang::ASTContext::getASTRecordLayout(const > >> > clang::RecordDecl * D) Line 2965 C++ > >> > 3388. liblldb.dll!`anonymous > >> > namespace'::EmptySubobjectMap::ComputeEmptySubobjectSizes() Line 216 > >> > C++ > >> > 3389. liblldb.dll!`anonymous > >> > namespace'::EmptySubobjectMap::EmptySubobjectMap(const clang::ASTContext > >> > & Context, const clang::CXXRecordDecl * Class) Line 172 C++ > >> > 3390. liblldb.dll!clang::ASTContext::getASTRecordLayout(const > >> > clang::RecordDecl * D) Line 2965 C++ > >> > 3391. liblldb.dll!`anonymous > >> > namespace'::EmptySubobjectMap::ComputeEmptySubobjectSizes() Line 216 > >> > C++ > >> > 3392. liblldb.dll!`anonymous > >> > namespace'::EmptySubobjectMap::EmptySubobjectMap(const clang::ASTContext > >> > & Context, const clang::CXXRecordDecl * Class) Line 172 C++ > >> > 3393. liblldb.dll!clang::ASTContext::getASTRecordLayout(const > >> > clang::RecordDecl * D) Line 2965 C++ > >> > > >> > Help please :S > >> > > >> > Thanks, > >> > Ben > >> > > >> > > >> > _______________________________________________ > >> > lldb-dev mailing list > >> > lldb-dev@lists.llvm.org <mailto:lldb-dev@lists.llvm.org> > >> > https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > >> > <https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev> > > > > > > > > -- > > "Sometimes I've believed as many as six impossible things before breakfast" > > - Alice in Wonderland > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org <mailto:lldb-dev@lists.llvm.org> > https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > <https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev> > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org > https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
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