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2023-10-28Fix -Warray-parameter warning for __sigsetjmpPavel Kozlov
Fix the [-Warray-parameter=] warning for __sigsetjmp generated by GCC 11 and later GCC versions: | | warning: argument 1 of type 'struct __jmp_buf_tag *' declared as a pointer [-Warray-parameter=] | extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL; | ... | note: previously declared as an array 'struct __jmp_buf_tag[1]' | extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) | Use the same fix as in glibc. The fix is to move the struct __jmp_buf_tag definition to a separate bits/ header so it can be included in pthread.h, to allow to use an array (as in setjmp.h) rather than a pointer in the declaration. Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com>
2018-01-15libpthread/nptl: bugfix malloc segfault in race conditions.Guo Ren
In libc/sysdeps/linux/common/bits/uClibc_pthread.h: extern void weak_function _pthread_cleanup_push_defer(...) This *weak_function* declaration will cause nptl/cleanup_defer_compat.c: strong_alias (...) !!!FAIL!!!, because it include pthreadP.h->pthread.h ->uClibc_pthread.h That means: Readelf -s libpthread/nptl/cleanup_defer_compat.o you will get: 18: 00000000 198 FUNC WEAK DEFAULT 1 _pthread_cleanup_push_def Readelf -s libc/misc/internals/__uClibc_main.o you will also get: 32: 00000038 58 FUNC WEAK DEFAULT 1 _pthread_cleanup_push_def Final: gcc malloc_pthread_test.c -lpthread The libc/stdlib/malloc-standard/malloc.c:839 (__MALLOC_LOCK-> _pthread_cleanup_push_def) will use the one in __uClibc_main.o !!!not in cleanup_defer_compat.o!!!, becasue two cleanup_defer_compat in libc.a with the same weak declarations and the __uClibc_main.o is close to front. ==== All of malloc/free will failed in muti-threads' race conditions probabilistic. As it happens, uClibc-0.9.33.2 is OK, Becasue: It's seperated in libpthread.a and libc.a, and the libc.a is the last lib for ld internal-cmd, and malloc will get right cleanup_defer_compat from libpthread.a. This BUG is from 2016-09-24 to now: >>> commit 29ff9055c80efe77a7130767a9fcb3ab8c67e8ce Author: Waldemar Brodkorb <wbx@uclibc-ng.org> Date: Sat Sep 24 02:55:31 2016 +0200 use a single libc and deduplicate threading code Similar to musl libc a single libc has many benefits and solves some open issues with uClibc-ng. - no pthread_mutex_* weak symbols exported anymore - applications no longer failing to link when either -lrt or -lpthread are missing for dynamic and static linking mode - smaller C library - slightly better runtime performance <<< Perharps we need carefully check all of the impact about that commit. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2016-11-10nptl: add pthread_getname_np/pthread_setname_np from GNU libcWaldemar Brodkorb
These functions are used by firefox for example. Tested with running firefox on x86 system.
2015-03-13unistd.h: put getppid under XOPEN2K8Bernhard Reutner-Fischer
Add __LEAF to all __THROW, introduce non-leaf __THROWNL Adjust affected spots accordingly. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-11-18drop support for pre ISO-C compilersMike Frysinger
This drops __signed, __volatile, and __const. Only the latter was used in the code base, and for uClibc, not consistently. Much of the code used plain "const" which meant "__const" was useless. Really, the point of this is to stay in sync with what glibc did. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-11-18Replace FSF snail mail address with URLsMike Frysinger
This matches a similar change made to glibc. No functional changes here. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-06-15fix a bunch of build warningsPeter S. Mazinger
Added attribute_noreturn even if it has return at the end of function Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-01-29nptl_db: handle SUSv4-OBBernhard Reutner-Fischer
pthread_getconcurrency / pthread_setconcurrency is OBSOLETE in SUSv4 so disable pthread debug support too Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-02-16mass sync with glibc nptlAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2009-10-17libpthread/nptl: core of the "Native Posix Threading Library" for uClibcAustin Foxley
targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley <austinf@cetoncorp.com>