Author: Christopher Di Bella Date: 2022-06-08T17:55:31Z New Revision: 288c1bff96fc9042d01b7055dc6e1049d8b54b26
URL: https://github.com/llvm/llvm-project/commit/288c1bff96fc9042d01b7055dc6e1049d8b54b26 DIFF: https://github.com/llvm/llvm-project/commit/288c1bff96fc9042d01b7055dc6e1049d8b54b26.diff LOG: [clang][driver] adds `-print-diagnostics` Prints a list of all the warnings that Clang offers. Differential Revision: https://reviews.llvm.org/D126796 Added: clang/test/Driver/print-diagnostic-options.c Modified: clang/include/clang/Driver/Options.td clang/lib/Basic/DiagnosticIDs.cpp clang/lib/Driver/Driver.cpp Removed: ################################################################################ diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td index b2feed0e36329..de3cd2ded8bef 100644 --- a/clang/include/clang/Driver/Options.td +++ b/clang/include/clang/Driver/Options.td @@ -4005,6 +4005,8 @@ def print_rocm_search_dirs : Flag<["-", "--"], "print-rocm-search-dirs">, HelpText<"Print the paths used for finding ROCm installation">; def print_runtime_dir : Flag<["-", "--"], "print-runtime-dir">, HelpText<"Print the directory pathname containing clangs runtime libraries">; +def print_diagnostic_options : Flag<["-", "--"], "print-diagnostic-options">, + HelpText<"Print all of Clang's warning options">; def private__bundle : Flag<["-"], "private_bundle">; def pthreads : Flag<["-"], "pthreads">; defm pthread : BoolOption<"", "pthread", diff --git a/clang/lib/Basic/DiagnosticIDs.cpp b/clang/lib/Basic/DiagnosticIDs.cpp index a8a17994f7fc8..cc6b19646d1d6 100644 --- a/clang/lib/Basic/DiagnosticIDs.cpp +++ b/clang/lib/Basic/DiagnosticIDs.cpp @@ -653,7 +653,7 @@ StringRef DiagnosticIDs::getWarningOptionForDiag(unsigned DiagID) { } std::vector<std::string> DiagnosticIDs::getDiagnosticFlags() { - std::vector<std::string> Res; + std::vector<std::string> Res{"-W", "-Wno-"}; for (size_t I = 1; DiagGroupNames[I] != '\0';) { std::string Diag(DiagGroupNames + I + 1, DiagGroupNames[I]); I += DiagGroupNames[I] + 1; diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp index 8e698a2a7cbef..8f7e411696e2c 100644 --- a/clang/lib/Driver/Driver.cpp +++ b/clang/lib/Driver/Driver.cpp @@ -2010,6 +2010,13 @@ bool Driver::HandleImmediateArgs(const Compilation &C) { return false; } + if (C.getArgs().hasArg(options::OPT_print_diagnostic_options)) { + std::vector<std::string> Flags = DiagnosticIDs::getDiagnosticFlags(); + for (std::size_t I = 0; I != Flags.size(); I += 2) + llvm::outs() << " " << Flags[I] << "\n " << Flags[I + 1] << "\n\n"; + return false; + } + // FIXME: The following handlers should use a callback mechanism, we don't // know what the client would like to do. if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) { diff --git a/clang/test/Driver/print-diagnostic-options.c b/clang/test/Driver/print-diagnostic-options.c new file mode 100644 index 0000000000000..fc6d1bf2eff53 --- /dev/null +++ b/clang/test/Driver/print-diagnostic-options.c @@ -0,0 +1,13 @@ +// Test that -print-diagnostic-options prints warning groups and disablers + +// RUN: %clang -print-diagnostic-options | FileCheck %s + +// CHECK: -W +// CHECK: -Wno- +// CHECK: -W#pragma-messages +// CHECK: -Wno-#pragma-messages +// CHECK: -W#warnings +// CHECK: -Wabi +// CHECK: -Wno-abi +// CHECK: -Wall +// CHECK: -Wno-all _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
