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1. Can you link to that? 2. Have these changes been offered as patch for libunwind or boost::stacktrace?
by einpoklum 3y ago
1. Can you link to that?
2. Have these changes been offered as patch for libunwind or boost::stacktrace?
- zX41ZdbW 3y agohttps://github.com/ClickHouse/libunwind/ https://github.com/ClickHouse/libunwind/ There were multiple steps: 1. Avoid using malloc/free inside libunwind. 2. Avoid using FDECache that required a mutex. 3. Avoid using dl_iterate_phdr (a mutex inside libc). 4. Protection from dereferencing wrong pointers due to incorrect unwind tables. Most of the changes were integrated to libunwind, but not everything. Example: https://bugs.llvm.org/show_bug.cgi?id=48186 https://bugs.llvm.org/show_bug.cgi?id=48186