unused-non-trivial-variable: Fix false positive when decl begins with macro

We check if the variable is used after the location where it was declared,
but it the expression begins with a macro, it was using the location of where
the macro was written, and where it was used.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/checks/level0/unused-non-trivial-variable.cpp b/src/checks/level0/unused-non-trivial-variable.cpp
index 1450224b..a05ee2a3 100644
--- a/src/checks/level0/unused-non-trivial-variable.cpp
+++ b/src/checks/level0/unused-non-trivial-variable.cpp
@@ -90,6 +90,7 @@ void UnusedNonTrivialVariable::handleVarDecl(VarDecl *varDecl)
         return;
 
     SourceLocation locStart = varDecl->getLocStart();
+    locStart = sm().getExpansionLoc(locStart);
     auto declRefs = HierarchyUtils::getStatements<DeclRefExpr>(body, &sm(), locStart);
 
     auto pred = [varDecl] (DeclRefExpr *declRef) {