diff options
Diffstat (limited to 'lib/Sema/SemaChecking.cpp')
| -rw-r--r-- | lib/Sema/SemaChecking.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp index c8f2d05e0d..9bb532b532 100644 --- a/lib/Sema/SemaChecking.cpp +++ b/lib/Sema/SemaChecking.cpp @@ -4277,7 +4277,7 @@ static bool IsTailPaddedMemberArray(Sema &S, llvm::APInt Size, void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, const ArraySubscriptExpr *ASE, - bool AllowOnePastEnd) { + bool AllowOnePastEnd, bool IndexNegated) { IndexExpr = IndexExpr->IgnoreParenCasts(); if (IndexExpr->isValueDependent()) return; @@ -4292,6 +4292,8 @@ void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, llvm::APSInt index; if (!IndexExpr->EvaluateAsInt(index, Context)) return; + if (IndexNegated) + index = -index; const NamedDecl *ND = NULL; if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BaseExpr)) |