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musl - an implementation of the standard library for Linux-based systems
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618b18c78e
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Rich Felker 618b18c78e revert detection of partially-replaced allocator 
commit c9f415d7ea included checks to
make calloc fallback to memset if used with a replaced malloc that
didn't also replace calloc, and the memalign family fail if free has
been replaced. however, the checks gave false positives for
replacement whenever malloc or free resolved to a PLT entry in the
main program.

for now, disable the checks so as not to leave libc in a broken state.
this means that the properties documented in the above commit are no
longer satisfied; failure to replace calloc and the memalign family
along with malloc is unsafe if they are ever called.

the calloc checks were correct but useless for static linking. in both
cases (simple or full malloc), calloc and malloc are in a source file
together, so replacement of one but not the other would give linking
errors. the memalign-family check was useful for static linking, but
broken for dynamic as described above, and can be replaced with a
better link-time check.
2018-04-19 15:25:48 -04:00
arch arm: use a_ll/a_sc atomics when building for ARMv6T2 2018-04-19 12:36:37 -04:00
crt add s390x port 2016-11-11 23:06:21 -05:00
dist
include fix default feature profile in tar.h 2018-03-28 15:53:45 -04:00
ldso enable reclaim_gaps for fdpic 2018-04-17 19:23:01 -04:00
src revert detection of partially-replaced allocator 2018-04-19 15:25:48 -04:00
tools add CFI generation script for x86_64 2015-10-13 18:09:46 -04:00
.gitignore remove obsolete gitignore rules 2016-07-06 00:21:25 -04:00
configure use explicit dynamic-list rather than symbolic-functions for linking 2018-04-17 19:23:00 -04:00
COPYRIGHT update authors/contributors list 2018-02-21 14:19:01 -05:00
dynamic.list allow interposition/replacement of allocator (malloc) 2018-04-18 14:22:49 -04:00
INSTALL add powerpc64 and s390x to list of supported archs in INSTALL file 2017-08-29 20:48:02 -04:00
Makefile adjust makefile target-specific CFLAGS rules to be more robust & complete 2018-03-24 22:47:36 -04:00
README update version reference in the README file 2014-06-25 14:16:53 -04:00
VERSION release 1.1.19 2018-02-22 13:39:19 -05:00
WHATSNEW release 1.1.19 2018-02-22 13:39:19 -05:00

README 

    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/