False-positive warnings in hash functions

[Azq2]

Not a problem, but may be better change unsigned char block[64] to unsigned char *block

In function 'HV_MD5Update',
    inlined from 'HV_MD5Final' at libhv/util/md5.c:86:5:
libhv/util/md5.c:69:13: warning: 'HV_MD5Transform' accessing 64 bytes in a region of size 8 [-Wstringop-overflow=]
   69 |             HV_MD5Transform(ctx->state,&input[i]);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libhv/util/md5.c:69:13: note: referencing argument 2 of type 'unsigned char[64]'
libhv/util/md5.c: In function 'HV_MD5Final':
libhv/util/md5.c:111:6: note: in a call to function 'HV_MD5Transform'
  111 | void HV_MD5Transform(unsigned int state[4],unsigned char block[64]) {
      |      ^~~~~~~~~~~~~~~
[ 95%] Building C object third_party/libhv/CMakeFiles/hv_static.dir/util/sha1.c.o
In function 'HV_SHA1Update',
    inlined from 'HV_SHA1Final' at libhv/util/sha1.c:260:5:
libhv/util/sha1.c:214:13: warning: 'HV_SHA1Transform' reading 64 bytes from a region of size 0 [-Wstringop-overread]
  214 |             HV_SHA1Transform(context->state, &data[i]);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libhv/util/sha1.c:214:13: note: referencing argument 2 of type 'const unsigned char[64]'
libhv/util/sha1.c: In function 'HV_SHA1Final':
libhv/util/sha1.c:49:6: note: in a call to function 'HV_SHA1Transform'
   49 | void HV_SHA1Transform(
      |      ^~~~~~~~~~~~~~~~
In function 'HV_SHA1Update',
    inlined from 'HV_SHA1Final' at libhv/util/sha1.c:264:9:
libhv/util/sha1.c:214:13: warning: 'HV_SHA1Transform' reading 64 bytes from a region of size 0 [-Wstringop-overread]
  214 |             HV_SHA1Transform(context->state, &data[i]);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libhv/util/sha1.c:214:13: note: referencing argument 2 of type 'const unsigned char[64]'
libhv/util/sha1.c: In function 'HV_SHA1Final':
libhv/util/sha1.c:49:6: note: in a call to function 'HV_SHA1Transform'
   49 | void HV_SHA1Transform(
      |      ^~~~~~~~~~~~~~~~

---

$ arm-linux-gnueabihf-g++ -v
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/14.2.0/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../gcc-14.2.0/configure --target=arm-linux-gnueabihf --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --program-prefix=arm-linux-gnueabihf- --libdir=/usr/lib --libexecdir=/usr/lib --with-local-prefix=/usr/arm-linux-gnueabihf --with-sysroot=/usr/arm-linux-gnueabihf --with-build-sysroot=/usr/arm-linux-gnueabihf --with-native-system-header-dir=/include --with-as=/usr/bin/arm-linux-gnueabihf-as --with-ld=/usr/bin/arm-linux-gnueabihf-ld --with-linker-hash-style=gnu --with-system-zlib --with-arch=armv6 --with-float=hard --with-fpu=vfp --enable-languages=c,c++,lto,m2 --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-libstdcxx-backtrace --enable-link-serialization=1 --enable-linker-build-id --enable-lto --enable-plugin --enable-shared --enable-threads=posix --enable-libquadmath --enable-libvtv --disable-nls --disable-install-libiberty --disable-libssp --disable-libstdcxx-pch --disable-multilib --disable-werror
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.2.0 (GCC)