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https://github.com/fluencelabs/musl
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66b53cfa88
a null pointer for a library's deps list was ambiguous: it could indicate either no dependencies or that the dependency list had not yet been populated. inability to distinguish could lead to spurious work when dlopen is called multiple times on a library with no deps, and due to related bugs, could actually cause other libraries to falsely appear as dependencies, translating into false positives for dlsym. avoid the problem by always initializing the deps pointer, pointing to an empty list if there are no deps. rather than wasting memory and introducing another failure path by allocating an empty list per library, simply share a global dummy list. further fixes will be needed for related bugs, and much of this code may end up being replaced.
musl libc
musl, pronounced like the word "mussel", is an MIT-licensed
implementation of the standard C library targetting the Linux syscall
API, suitable for use in a wide range of deployment environments. musl
offers efficient static and dynamic linking support, lightweight code
and low runtime overhead, strong fail-safe guarantees under correct
usage, and correctness in the sense of standards conformance and
safety. musl is built on the principle that these goals are best
achieved through simple code that is easy to understand and maintain.
The 1.1 release series for musl features 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.
For basic installation instructions, see the included INSTALL file.
Information on full musl-targeted compiler toolchains, system
bootstrapping, and Linux distributions built on musl can be found on
the project website:
http://www.musl-libc.org/