CHECK: extern prototypes should be avoided in .h files
WARNING: line length of 82 exceeds 80 columns
WARNING: line length of 83 exceeds 80 columns
WARNING: line length of 89 exceeds 80 columns
WARNING: line length of 90 exceeds 80 columns
WARNING: line length of 91 exceeds 80 columns
WARNING: line length of 97 exceeds 80 columns