Function check_memory_setting

tools/link.py:551–555

(setting)

    default_setting('INITIAL_MEMORY', 16 * 1024 * 1024)

  def check_memory_setting(setting):
    if settings[setting] % webassembly.WASM_PAGE_SIZE != 0:
      exit_with_error(f'{setting} must be a multiple of WebAssembly page size (64KiB), was {settings[setting]}')
    if settings[setting] >= 2**53:
      exit_with_error(f'{setting} must be smaller than 2^53 bytes due to JS Numbers (doubles) being used to hold pointer addresses in JS side')

  # Due to the aforementioned lack of knowledge about the static data size, we delegate
  # checking the overall consistency of these settings to wasm-ld.