30ae485835
This fixes some test failures when the libcxx tests are run against an up-to-date picolibc on embedded Arm, because those tests depend on an unsupported locale but the `hasAnyLocale` preliminary check wrongly concluded that the locale _was_ supported. `hasAnyLocale` passes a set of locale strings to a test program via the command line, and checks if the libc under test reports that any of the locales can be successfully set via setlocale(). In some invocations one of the locale names contains a space, e.g. the Windows-style locale name "English_United States.1252". Unfortunately picolibc's crt0, when running under Arm semihosting, fetches the single command string from the host and then splits it up at spaces without implementing any kind of quoting. So it simply isn't possible to get a space into an argv word. As a result, we end up testing for the locale (in this example) "English_United". In up-to-date versions of picolibc, this is actually accepted, since it contains no objectionable character set specification (or indeed any at all). So the lit check wrongly concludes that libc supports that locale, and enables some locale tests, which fail. This patch works around the issue entirely within `hasAnyLocale()`, by abandoning the use of argv completely, and instead encoding the list of locales to check as an array of strings inside the test program.
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.