Konstantin Belousov 55a1911ef2 The getcontext() from the __fillcontextx() call in the ... check_deferred_signal() returns twice, since handle_signal() emulates the return from the normal signal handler by sigreturn(2)ing the passed context. Second return is performed on the destroyed stack frame, because __fillcontextx() has already returned. This causes undefined and bad behaviour, usually the victim thread gets SIGSEGV. Avoid nested frame and the need to return from it by doing direct call to getcontext() in the check_deferred_signal() and using a new private libc helper __fillcontextx2() to complement the context with the extended CPU state if the deferred signal is still present. The __fillcontextx() is now unused, but is kept to allow older libthr.so to be used with the new libc. Mark __fillcontextx() as returning twice [1]. Reported by: pgj Pointy hat to: kib Discussed with: dim Tested by: pgj, dim Suggested by: jilles [1] MFC after: 1 week		2013-05-28 04:54:16 +00:00
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fpu	Computations on NaNs are supposed to return one of the input NaNs unchanged.	2012-01-16 04:09:45 +00:00
gen	The getcontext() from the __fillcontextx() call in the	2013-05-28 04:54:16 +00:00
string
sys	Rework the __vdso_* symbols attributes to only make the symbols weak,	2013-01-30 12:48:16 +00:00
_fpmath.h
arith.h
gd_qnan.h
Makefile.inc	Rework the __vdso_* symbols attributes to only make the symbols weak,	2013-01-30 12:48:16 +00:00
Symbol.map	Replace a proliferation of buggy MD implementations of modf() with a	2011-10-21 06:40:36 +00:00
SYS.h