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freebsd-dev/lib/libc
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Ed Maste 33482dae89 libc: fix undefined behavior from signed overflow in strstr and memmem 
unsigned char promotes to int, which can overflow when shifted left by
24 bits or more. this has been reported multiple times but then
forgotten. it's expected to be benign UB, but can trap when built with
explicit overflow catching (ubsan or similar). fix it now.

note that promotion to uint32_t is safe and portable even outside of
the assumptions usually made in musl, since either uint32_t has rank
at least unsigned int, so that no further default promotions happen,
or int is wide enough that the shift can't overflow. this is a
desirable property to have in case someone wants to reuse the code
elsewhere.

musl commit: 593caa456309714402ca4cb77c3770f4c24da9da

Obtained from:	musl
2020-11-19 00:03:15 +00:00
..
aarch64 Fix initial exec TLS mode for dynamically loaded shared objects. 2019-03-29 17:52:57 +00:00
amd64 amd64: sync up libc memcmp with the kernel version (r357309) 2020-01-30 19:57:05 +00:00
arm arm/ffs.S: remove stale comment. 2019-12-28 02:11:41 +00:00
capability Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
compat-43 Adjust history, info source from v1's manuals 2019-09-04 13:44:46 +00:00
db Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
gdtoa Remove sparc64 specific parts of libc. 2020-02-26 18:55:09 +00:00
gen Add a missing Nm macro 2020-11-13 14:56:34 +00:00
gmon mcount: tidy up ANSIfication 2018-10-20 22:39:35 +00:00
i386 remove obsolete i386 MD memchr implementation 2019-09-25 16:49:22 +00:00
iconv Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
include Add pthread_getname_np() and pthread_setname_np() aliases for 2020-06-10 22:13:24 +00:00
inet libc: fix cases of undefined behavior. 2018-08-07 15:24:19 +00:00
isc SPDX: more ISC-related files. 2017-12-08 17:52:53 +00:00
locale Add collation version support to querylocale(3). 2020-11-08 02:50:34 +00:00
md Replace dot-dot relative pathing with SRCTOP-relative paths where possible 2017-01-20 03:23:24 +00:00
mips mips: fix some mcount nits 2019-09-02 01:55:55 +00:00
nameser Bounds check again after advancing cp, otherwise we have a possible 2019-09-05 19:35:30 +00:00
net Eliminate duplicate afterinstallconfigs target 2020-10-01 16:37:49 +00:00
nls Replace literal uses of /usr/local in C sources with _PATH_LOCALBASE 2020-10-27 11:29:11 +00:00
posix1e Drop "All rights reserved" from all my stuff. This includes 2020-10-28 13:46:11 +00:00
powerpc [PowerPC64LE] Fix gdtoa configurations on LE. 2020-09-23 02:05:44 +00:00
powerpc64 [PowerPC64LE] Fix gdtoa configurations on LE. 2020-09-23 02:05:44 +00:00
powerpcspe [PowerPC] Implement VDSO timebase access on powerpc* 2020-09-08 03:00:31 +00:00
quad Add casts and L suffixes to libc quad support, to work around various 2020-02-17 20:14:59 +00:00
regex libregex: Implement a subset of the GNU extensions 2020-08-04 02:14:51 +00:00
resolv Rather than using the legacy IP struct fields in the union for the 2019-06-04 20:53:35 +00:00
riscv libc: Provide sub fp(s|g)etmask() implementations for RISC-V 2020-08-03 12:48:51 +00:00
rpc Fix -Wvoid-pointer-to-enum-cast warnings. 2020-04-15 18:15:58 +00:00
secure Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
softfloat Add implementations for clog(3), clogf(3), and clog(3). 2018-05-13 09:54:34 +00:00
stdio tmpnam(3): Also mention tmpfile in the ENVIRONMENT section 2020-08-07 16:20:07 +00:00
stdlib Further refinements of ptsname_r(3) interface: 2020-10-20 01:29:45 +00:00
stdtime strptime: make %k and %l specifiers match their description in 2018-11-03 23:37:13 +00:00
string libc: fix undefined behavior from signed overflow in strstr and memmem 2020-11-19 00:03:15 +00:00
sys _umtx_op: document UMTX_OP_SEM2_WAIT copyout behavior 2020-11-17 03:26:56 +00:00
tests Disable ssp raw test without ASAN 2020-10-28 23:10:54 +00:00
uuid libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
x86 Remove resolver_qual from DEFINE_IFUNC/DEFINE_UIFUNC macros. 2019-05-16 22:20:54 +00:00
xdr typo: s/impelmentation/implementation/. 2020-02-07 15:14:29 +00:00
yp Increase the size of the send and receive buffers for YP client rpc 2019-09-16 06:42:01 +00:00
libc_nossp.ldscript
libc.ldscript
Makefile [PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le. 2020-09-23 00:21:51 +00:00
Makefile.depend Update Makefile.depend files 2019-12-11 17:37:53 +00:00
Makefile.depend.options Update libssp paths in various Makefile.depend* files 2020-01-06 18:15:55 +00:00
Versions.def Create namespace for the symbols added during 13-CURRENT cycle. 2018-11-12 19:12:14 +00:00