Fix corner cases in PTH getSpelling() binary search.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62187 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp
index 4a84f9b3afa1b861ad190461854549cc6f563de0..c5fc6f3da795a0fb5ee82d82a7a4cdfc046a39dc 100644 (file)
--- a/lib/Lex/PTHLexer.cpp
+++ b/lib/Lex/PTHLexer.cpp
@@ -400,6 +400,9 @@ unsigned PTHSpellingSearch::getSpellingBinarySearch(unsigned fpos,
     }
     
     if (TokOffset < fpos) {
+      if (i == min)
+        break;
+      
       min = i;
       continue;
     }