whisperity added a reviewer: dyung. whisperity added a subscriber: dyung. whisperity added a comment.
In https://reviews.llvm.org/D45050#1280831, @dyung wrote: > I have attached a bzipped preprocessed file that I can confirm will show the > failure if built with clang++ version 3.7.1, specifically the version that > shipped with ubuntu 14.04.5 LTS. Here is the full version information: > > Ubuntu clang version 3.7.1-svn253742-1~exp1 (branches/release_37) (based on > LLVM 3.7.1) > > Target: x86_64-pc-linux-gnu > Thread model: posix > > If you build it with “clang++ -std=c++11 > NotNullTerminatedResultCheck.preproc.cpp” you should see the failure. I have installed said Ubuntu in a virtual machine for testing this, but unfortunately only the following Clangs are available in the package manager for `Trusty`: clang - C, C++ and Objective-C compiler (LLVM based) clang-3.3 - C, C++ and Objective-C compiler (LLVM based) clang-3.4 - C, C++ and Objective-C compiler (LLVM based) clang-3.5 - C, C++ and Objective-C compiler (LLVM based) clang-3.6 - C, C++ and Objective-C compiler (LLVM based) clang-3.8 - C, C++ and Objective-C compiler (LLVM based) clang-3.9 - C, C++ and Objective-C compiler (LLVM based) (Where `clang` is just a synonym for `clang-3.4`.) **There is no Clang 3.7 in the package upstream, it seems.** ------ However, **`16.04 LTS (Xenial)`** at the time of writing this comment has an `clang-3.7` package, specifically this version: Ubuntu clang version 3.7.1-2ubuntu2 (tags/RELEASE_371/final) (based on LLVM 3.7.1) Target: x86_64-pc-linux-gnu Thread model: posix With this I can confirm I get a huge trace and the template depth overflow failure. However, from the filename-line mappings of the preprocessed output, I can see that the `type_traits` header comes from `/usr/include/c++/4.8/type_traits`, which is a version **4.8** standard library, but installing the `clang-3.7` package (through some transitivity in `libasan` and such) depended on `gcc-`**`5`**`-base`, upgrading it from the system-default `5.3.1` to `5.4.0`. Isn't this a discrepancy, relying on an older standard library than what is seemingly available on the system? https://reviews.llvm.org/D45050 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits