Added missing static and style fixup

Author: gbMattN

compiler-rt/lib/tysan/tysan.cpp

@@ -103,7 +103,7 @@ static tysan_type_descriptor *getRootTD(tysan_type_descriptor *TD) {
 }
 
 // Walk up TDA to see if it reaches TDB
-bool walkAliasTree(tysan_type_descriptor *TDA, tysan_type_descriptor *TDB,
+static bool walkAliasTree(tysan_type_descriptor *TDA, tysan_type_descriptor *TDB,
                    uptr OffsetA, uptr OffsetB) {
   do {
     if (TDA == TDB)
@@ -160,17 +160,16 @@ static bool isAliasingLegalUp(tysan_type_descriptor *TDA,
 }
 
 static bool isAliasingLegalWithOffset(tysan_type_descriptor *TDA,
-                                      tysan_type_descriptor *TDB,
-                                      int OffsetB) {
-  // This is handled in the other cases
+                                      tysan_type_descriptor *TDB, uptr OffsetB) {
+  // This is handled by calls to isAliasingLegalUp.
   if (OffsetB == 0)
     return false;
 
-  // You can't have an offset into a member
+  // You can't have an offset into a member.
   if (TDB->Tag == TYSAN_MEMBER_TD)
     return false;
 
-  int OffsetA = 0;
+  uptr OffsetA = 0;
   if (TDA->Tag == TYSAN_MEMBER_TD) {
     OffsetA = TDA->Member.Offset;
     TDA = TDA->Member.Base;
@@ -185,8 +184,7 @@ static bool isAliasingLegalWithOffset(tysan_type_descriptor *TDA,
 }
 
 static bool isAliasingLegal(tysan_type_descriptor *TDA,
-                            tysan_type_descriptor *TDB,
-                            int OffsetB = 0) {
+                            tysan_type_descriptor *TDB, uptr OffsetB = 0) {
   if (TDA == TDB || !TDB || !TDA)
     return true;