mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 15:34:48 +08:00
5b058973d3
When building mips tinyconfig with clang the following warning show up: arch/mips/lib/uncached.c:45:6: warning: variable 'sp' is uninitialized when used here [-Wuninitialized] if (sp >= (long)CKSEG0 && sp < (long)CKSEG2) ^~ arch/mips/lib/uncached.c:40:18: note: initialize the variable 'sp' to silence this warning register long sp __asm__("$sp"); ^ = 0 1 warning generated. Rework to make an explicit inline move, instead of the non-standard use of specifying registers for local variables. This is what's written from the gcc-10 manual [1] about specifying registers for local variables: "6.47.5.2 Specifying Registers for Local Variables ................................................. [...] "The only supported use for this feature is to specify registers for input and output operands when calling Extended 'asm' (*note Extended Asm::). [...]". [1] https://docs.w3cub.com/gcc~10/local-register-variables Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reported-by: Nathan Chancellor <natechancellor@gmail.com> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
||
---|---|---|
.. | ||
bitops.c | ||
bswapdi.c | ||
bswapsi.c | ||
csum_partial.S | ||
delay.c | ||
dump_tlb.c | ||
iomap_copy.c | ||
iomap-pci.c | ||
libgcc.h | ||
Makefile | ||
memcpy.S | ||
memset.S | ||
mips-atomic.c | ||
multi3.c | ||
r3k_dump_tlb.c | ||
strncpy_user.S | ||
strnlen_user.S | ||
uncached.c |