[Support/YAMLParser] Fix ASan found bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155735 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/YAMLParser.cpp b/lib/Support/YAMLParser.cpp
index 8526d9a..fbb6ce9 100644
--- a/lib/Support/YAMLParser.cpp
+++ b/lib/Support/YAMLParser.cpp
@@ -755,6 +755,8 @@
}
StringRef::iterator Scanner::skip_nb_char(StringRef::iterator Position) {
+ if (Position == End)
+ return Position;
// Check 7 bit c-printable - b-char.
if ( *Position == 0x09
|| (*Position >= 0x20 && *Position <= 0x7E))
@@ -778,6 +780,8 @@
}
StringRef::iterator Scanner::skip_b_break(StringRef::iterator Position) {
+ if (Position == End)
+ return Position;
if (*Position == 0x0D) {
if (Position + 1 != End && *(Position + 1) == 0x0A)
return Position + 2;
@@ -1211,7 +1215,9 @@
++Current;
// Repeat until the previous character was not a '\' or was an escaped
// backslash.
- } while (*(Current - 1) == '\\' && wasEscaped(Start + 1, Current));
+ } while ( Current != End
+ && *(Current - 1) == '\\'
+ && wasEscaped(Start + 1, Current));
} else {
skip(1);
while (true) {