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-rwxr-xr-x[-rw-r--r--]utils/find-unused-diagnostics.sh18
1 files changed, 7 insertions, 11 deletions
diff --git a/utils/find-unused-diagnostics.sh b/utils/find-unused-diagnostics.sh
index 89b7f7a700..cd6444d1e0 100644..100755
--- a/utils/find-unused-diagnostics.sh
+++ b/utils/find-unused-diagnostics.sh
@@ -4,16 +4,12 @@
# in Diagnostic*.td files but not used in sources.
#
-ALL_DIAGS=$(mktemp)
-ALL_SOURCES=$(mktemp)
+# Gather all diagnostic identifiers from the .td files.
+ALL_DIAGS=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' ./include/clang/Basic/Diagnostic*.td)
-grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+ ' ./include/clang/Basic/Diagnostic*.td > $ALL_DIAGS
-find lib include tools -name \*.cpp -or -name \*.h > $ALL_SOURCES
-for DIAG in $(cat $ALL_DIAGS); do
- if ! grep -r $DIAG $(cat $ALL_SOURCES) > /dev/null; then
- echo $DIAG
- fi;
-done
-
-rm $ALL_DIAGS $ALL_SOURCES
+# Now look for all potential identifiers in the source files.
+ALL_SOURCES=$(find lib include tools -name \*.cpp -or -name \*.h)
+DIAGS_IN_SOURCES=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' $ALL_SOURCES)
+# Print all diags that occur in the .td files but not in the source.
+diff -u <(sort -u <<< "$ALL_DIAGS") <(sort -u <<< "$DIAGS_IN_SOURCES") | sed -En 's/^-([a-z_]+)/\1/p'