CHECK: multiple assignments should be avoided
ERROR: space prohibited before that ',' (ctx:WxW)
WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
WARNING: line length of 81 exceeds 80 columns
WARNING: line length of 84 exceeds 80 columns
WARNING: line length of 85 exceeds 80 columns
WARNING: line length of 87 exceeds 80 columns
WARNING: line length of 89 exceeds 80 columns
WARNING: line length of 99 exceeds 80 columns