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per Austin Group interpretation for issue #686, which cites the requirements of ISO C, clock() cannot wrap. if the result is not representable, it must return (clock_t)-1. in addition, the old code was performing wrapping via signed overflow and thus invoking undefined behavior. since it seems impossible to accurately check for overflow with the old times()-based fallback code, I have simply dropped the fallback code for now, thus always returning -1 on ancient systems. if there's a demand for making it work and somebody comes up with a way, it could be reinstated, but the clock() function is essentially useless on 32-bit system anyway (it overflows in less than an hour). it should be noted that I used LONG_MAX rather than ULONG_MAX, despite 32-bit archs using an unsigned type for clock_t. this discrepency with the glibc/LSB type definitions will be fixed now; since wrapping of clock_t is no longer supported, there's no use in it being unsigned.
musl libc - a new standard library to power a new generation of Linux-based devices. musl is lightweight, fast, simple, free, and strives to be correct in the sense of standards-conformance and safety. musl is an alternative to glibc, eglibc, uClibc, dietlibc, and klibc. For reasons why one might prefer musl, please see the FAQ and libc comparison chart on the project website, http://www.musl-libc.org/ For installation instructions, see the INSTALL file. Please refer to the COPYRIGHT file for details on the copyright and license status of code included in musl (standard MIT license). Greetings! The 0.9.x release series for musl features interface coverage for all interfaces defined in ISO C99 and POSIX 2008 base, along with a number of non-standardized interfaces for compatibility with Linux, BSD, and glibc functionality. As the release series progresses, we are gradually adding support for incomplete functionality in existing interfaces, additional functions that are deemed to be important due to their use in real-world software, and support for new library and language features in C11 such as thread-local storage, which is now supported on all targets. In addition, support for additional target cpu architectures is being added. The number of packages build successfully against musl - either out-of-the-box or with minor patches to address portability errors - has exceeded 5000 and is steadily growing. In addition to application compatibility testing, unit testing has been conducted using three separate test frameworks and numerous additional standalone test cases to verify the correctness of the implementation. Included with this package is a gcc wrapper script (musl-gcc) which allows you to build musl-linked programs using an existing gcc 3.x or 4.x toolchain on the host. There are also now at several mini distributions (in the form of build scripts) which provide a self-hosting musl-based toolchain and system root. These are much better options than the wrapper script if you wish to use dynamic linking or build packages with many library dependencies. See the musl website for details. The musl project is actively seeking contributors, mostly in the areas of porting, testing, and application compatibility improvement. For bug reports, support requests, or to get involved in development, please visit #musl on Freenode IRC or subscribe to the musl mailing list by sending a blank email to musl-subscribe AT lists DOT openwall DOT com. Thank you for using musl. Cheers, Rich Felker / dalias
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