[txgk]

how to reproduce the bug:

#define STB_DS_IMPLEMENTATION
#include "stb_ds.h"
#include <stdint.h>

int main() {
  uint64_t a = 0x0000000080000000;
  size_t ha = stbds_hash_bytes(&a, sizeof(a), 0);
  return ha;
}

when this is compiled with gcc -fsanitize=undefined, program yields:

stb_ds.h:1180:61: runtime error: left shift of 128 by 24 places cannot be represented in type 'int'

the provided patch fixes this undefined behavior

[nothings]

duplicate of #1188