clang/utils/find-unused-diagnostics.sh

   1 #!/usr/bin/env bash
   2 #
   3 # This script produces a list of all diagnostics that are defined
   4 # in Diagnostic*.td files but not used in sources.
   5 #
   6
   7 # Gather all diagnostic identifiers from the .td files.
   8 ALL_DIAGS=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' ./include/clang/Basic/Diagnostic*.td)
   9
  10 # Now look for all potential identifiers in the source files.
  11 ALL_SOURCES=$(find lib include tools utils -name \*.cpp -or -name \*.h)
  12 DIAGS_IN_SOURCES=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' $ALL_SOURCES)
  13
  14 # Print all diags that occur in the .td files but not in the source.
  15 comm -23 <(sort -u <<< "$ALL_DIAGS") <(sort -u <<< "$DIAGS_IN_SOURCES")