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nuttx/libs/libc
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Karel Kočí 9f4b4faf47 libs/libc: add limits checks 
NuttX defines constants for the sizes of types just as constants
directly in the code. The real values depend on compiler and target
platform. It is possible that value declared by NuttX header is wrong
compared to the compiler configuration. This is more likely in case of
floating points.

Not all compilers supported by NuttX provide required info through
defines and thus it is more generic to specify limits as constants, but
in case compiler provides them then it is a good idea to compare. This
commit adds such set of comparisons for limits.h and float.h constants.

The comparisons were tested with GCC and Clang. They will be ignored in
case compiler doesn't provide them.

Signed-off-by: Karel Kočí <kkoci@elektroline.cz>
2026-07-02 09:02:21 -03:00
..
aio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
assert lib_stackchk.c: a duplicate implementation error reported during compilation 2026-02-02 13:22:07 +08:00
audio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
builtin
ctype
dirent libs/libc/dirent: preserve errno on readdir() end-of-directory 2026-06-02 23:34:25 +08:00
dlfcn include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
elf include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
errno
eventfd
fdt
fixedmath !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
gdbstub arch/arm64: fix backtrace register access and gdbstub config guard 2026-01-16 08:55:47 -03:00
gnssutils libc: remove reference to non-existent readme 2025-10-11 17:07:51 -04:00
grp libc/grp: add getgrouplist() 2026-06-23 23:09:22 +08:00
hex2bin include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
inttypes !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
libgen
locale style/FAR: remove FAR qualifier 2025-11-10 10:56:29 +01:00
lzf !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
machine arch/tricore: Full implementation of setjmp and longjmp. 2026-05-22 00:38:02 +08:00
misc arch/sim: replace macOS C++ constructor runtime hack with post-link patch 2026-05-19 07:08:55 -03:00
net include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
netdb !sys/types.h: change time_t and clock_t to int64_t to align with other OSes 2026-05-19 16:21:28 +08:00
obstack include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
pthread arch, sched/signal: Fix compilation with ENABLE_PARTIAL_SIGNALS=y 2026-06-16 17:07:32 +08:00
pwd
queue
regex libs/libc/regex: remove logically dead code in regcomp.c 2026-01-24 19:28:56 +08:00
sched include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
search libc/search: add foreach api for hcreate_data 2025-12-25 09:39:03 +08:00
semaphore pthread: move pthread_cond to userspace 2026-01-26 16:26:39 +08:00
signal sched/signal: Add support for disabling all signal functions 2026-01-18 08:24:13 -03:00
spawn include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
stdio !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
stdlib !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
stream syslog: avoid an infinite loop if one channel fails 2026-06-23 22:45:01 +08:00
string !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
symtab include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
syslog
termios drivers/serial: add job-control TTY ioctls and libc wrappers 2026-06-23 16:26:53 -03:00
time libs/libc/time: Add configuration options for the strftime 2026-06-04 14:29:33 +08:00
tls libc/tls: update preprocessor condition comment to match implementation 2026-01-31 02:49:10 +08:00
uio
unistd libc/unistd: add getgroups() 2026-06-24 14:55:11 -03:00
userfs include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
uuid
wchar
wctype
wqueue !sched/clock: remove CONFIG_SYSTEM_TIME64 and always use 64-bit time 2026-05-19 16:21:28 +08:00
zoneinfo Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
.gitignore
CMakeLists.txt
Kconfig
libc.csv !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
libc.h
limits_check.c libs/libc: add limits checks 2026-07-02 09:02:21 -03:00
Makefile libs/libc: add limits checks 2026-07-02 09:02:21 -03:00