diagnose invalid values of -ftabstop, patch by Christian Adaker!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93288 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/include/clang/Frontend/DiagnosticOptions.h b/include/clang/Frontend/DiagnosticOptions.h
index 0220e6416e..13039bb506 100644
--- a/include/clang/Frontend/DiagnosticOptions.h
+++ b/include/clang/Frontend/DiagnosticOptions.h
@@ -37,6 +37,7 @@ public:
 
   /// The distance between tab stops.
   unsigned TabStop;
+  enum { DefaultTabStop = 8, MaxTabStop = 100 };
 
   /// Column limit for formatting message diagnostics, or 0 if unused.
   unsigned MessageLength;
@@ -52,7 +53,7 @@ public:
 public:
   DiagnosticOptions() {
     IgnoreWarnings = 0;
-    TabStop = 8;
+    TabStop = DefaultTabStop;
     MessageLength = 0;
     NoRewriteMacros = 0;
     Pedantic = 0;