xref: /aosp_15_r20/external/clang/utils/find-unused-diagnostics.sh (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li#!/usr/bin/env bash
2*67e74705SXin Li#
3*67e74705SXin Li# This script produces a list of all diagnostics that are defined
4*67e74705SXin Li# in Diagnostic*.td files but not used in sources.
5*67e74705SXin Li#
6*67e74705SXin Li
7*67e74705SXin Li# Gather all diagnostic identifiers from the .td files.
8*67e74705SXin LiALL_DIAGS=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' ./include/clang/Basic/Diagnostic*.td)
9*67e74705SXin Li
10*67e74705SXin Li# Now look for all potential identifiers in the source files.
11*67e74705SXin LiALL_SOURCES=$(find lib include tools -name \*.cpp -or -name \*.h)
12*67e74705SXin LiDIAGS_IN_SOURCES=$(grep -E --only-matching --no-filename '(err_|warn_|ext_|note_)[a-z_]+' $ALL_SOURCES)
13*67e74705SXin Li
14*67e74705SXin Li# Print all diags that occur in the .td files but not in the source.
15*67e74705SXin Licomm -23 <(sort -u <<< "$ALL_DIAGS") <(sort -u <<< "$DIAGS_IN_SOURCES")
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