add clang -cc1 level support for "-ferror-limit 42"

llvm-svn: 100687

3 files changed, 11 insertions, 2 deletions

diff --git a/clang/lib/Basic/Diagnostic.cpp b/clang/lib/Basic/Diagnostic.cpp
index 388875cf631..738c27ccae7 100644
--- a/clang/lib/Basic/Diagnostic.cpp
+++ b/clang/lib/Basic/Diagnostic.cpp
@@ -223,7 +223,7 @@ Diagnostic::Diagnostic(DiagnosticClient *client) : Client(client) {
 
   ErrorOccurred = false;
   FatalErrorOccurred = false;
-  MaxErrorsEmitted = 0;
+  ErrorLimit = 0;
   
   NumWarnings = 0;
   NumErrors = 0;
@@ -555,7 +555,7 @@ bool Diagnostic::ProcessDiag() {
     
     // If we've emitted a lot of errors, emit a fatal error after it to stop a
     // flood of bogus errors.
-    if (MaxErrorsEmitted && NumErrors >= MaxErrorsEmitted &&
+    if (ErrorLimit && NumErrors >= ErrorLimit &&
         DiagLevel == Diagnostic::Error)
       SetDelayedDiagnostic(diag::fatal_too_many_errors);
   }
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index dc2c6bf3614..b9afcb5cfa6 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -232,6 +232,10 @@ static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
     Res.push_back("-fdiagnostics-binary");
   if (Opts.ShowOptionNames)
     Res.push_back("-fdiagnostics-show-option");
+  if (Opts.ErrorLimit) {
+    Res.push_back("-ferror-limit");
+    Res.push_back(llvm::utostr(Opts.ErrorLimit));
+  }
   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
     Res.push_back("-ftabstop");
     Res.push_back(llvm::utostr(Opts.TabStop));
@@ -830,6 +834,7 @@ static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
+  Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
                                     DiagnosticOptions::DefaultTabStop, Diags);
   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
diff --git a/clang/lib/Frontend/Warnings.cpp b/clang/lib/Frontend/Warnings.cpp
index ea9635e7984..39cda8783b4 100644
--- a/clang/lib/Frontend/Warnings.cpp
+++ b/clang/lib/Frontend/Warnings.cpp
@@ -35,6 +35,10 @@ void clang::ProcessWarningOptions(Diagnostic &Diags,
                                   const DiagnosticOptions &Opts) {
   Diags.setSuppressSystemWarnings(true);  // Default to -Wno-system-headers
   Diags.setIgnoreAllWarnings(Opts.IgnoreWarnings);
+  
+  // Handle -ferror-limit
+  if (Opts.ErrorLimit)
+    Diags.setErrorLimit(Opts.ErrorLimit);
 
   // If -pedantic or -pedantic-errors was specified, then we want to map all
   // extension diagnostics onto WARNING or ERROR unless the user has futz'd