1 files changed, 4 insertions, 2 deletions
diff --git a/lldb/source/Utility/StringExtractor.cpp b/lldb/source/Utility/StringExtractor.cpp
index d2f69f95b7c..86cd623f55c 100644
--- a/lldb/source/Utility/StringExtractor.cpp
+++ b/lldb/source/Utility/StringExtractor.cpp
@@ -17,18 +17,20 @@
 static inline int
 xdigit_to_sint (char ch)
 {
-    ch = tolower(ch);
     if (ch >= 'a' && ch <= 'f')
         return 10 + ch - 'a';
+    if (ch >= 'A' && ch <= 'F')
+        return 10 + ch - 'A';
     return ch - '0';
 }
 
 static inline unsigned int
 xdigit_to_uint (uint8_t ch)
 {
-    ch = tolower(ch);
     if (ch >= 'a' && ch <= 'f')
         return 10u + ch - 'a';
+    if (ch >= 'A' && ch <= 'F')
+        return 10u + ch - 'A';
     return ch - '0';
 }