I am testing Swift in "Windows Subsystem for Linux" which is a new feature of Windows 10 Anniversary Update scheduled in this year. WSL is Ubuntu LTS 14.04 compatible in user space.
Swift runtime libraries such as libswiftCore.so are marked Executable Stack, which have no problem in Linux. dlopen()'ing swift runtime libraries causes mprotect() with PROT_GROWSDOWN, which is not documented but verified with strace. WSL has not implemented PROT_GROWSDOWN feature because of clean room development. Swift runtime libraries had not been marked Executable Stack before Febrary snapshot. And cmark and llvm/clang shared libraries are not marked too. ***My request is swift runtime libraries be not marked Executable Stack.*** Thanks in advance. Kim, Jongsu
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