https://bugs.llvm.org/show_bug.cgi?id=37487
Bug ID: 37487
Summary: Using std::__throw_bad_weak_ptr can produce invalid
RTTI for std::runtime_error
Product: clang
Version: unspecified
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: davidcape...@gmail.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
If we compile a .cpp file with -frtti which throws std::runtime_error and
catches std::exception&, but then we compile another file with -fno-rtti that
uses std::__throw_bad_weak_ptr() in some way and we link both files in one
binary, the final std::runtime_error class is not identified as a derived class
of std::exception (so the catch code is not executed).
Here is a minimal example of this case:
https://gist.github.com/dacap/7ddffbe401eb42620de397e47edfcc76
clang --version
Apple LLVM version 9.1.0 (clang-902.0.39.1)
Target: x86_64-apple-darwin17.5.0
Thread model: posix
InstalledDir:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
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