[PATCH] D18210: [analyzer] Fix an assertion fail in hash generation.

[Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL264851: [analyzer] Fix an assertion fail in hash generation. (authored by xazax).

Changed prior to commit:
  http://reviews.llvm.org/D18210?vs=50819&id=52033#toc

Repository:
  rL LLVM

http://reviews.llvm.org/D18210

Files:
  cfe/trunk/lib/StaticAnalyzer/Core/IssueHash.cpp

Index: cfe/trunk/lib/StaticAnalyzer/Core/IssueHash.cpp
===================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/IssueHash.cpp
+++ cfe/trunk/lib/StaticAnalyzer/Core/IssueHash.cpp
@@ -132,8 +132,11 @@
 
   StringRef Str = GetNthLineOfFile(SM.getBuffer(L.getFileID(), L),
                                    L.getExpansionLineNumber());
-  unsigned col = Str.find_first_not_of(Whitespaces);
-  col++;
+  StringRef::size_type col = Str.find_first_not_of(Whitespaces);
+  if (col == StringRef::npos)
+    col = 1; // The line only contains whitespace.
+  else
+    col++;
   SourceLocation StartOfLine =
       SM.translateLineCol(SM.getFileID(L), L.getExpansionLineNumber(), col);
   llvm::MemoryBuffer *Buffer =


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