diff options
Diffstat (limited to 'clang/lib')
| -rw-r--r-- | clang/lib/Sema/SemaChecking.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp index 28085ef6eab..81ae7b3afb0 100644 --- a/clang/lib/Sema/SemaChecking.cpp +++ b/clang/lib/Sema/SemaChecking.cpp @@ -3491,7 +3491,9 @@ static void CheckArrayAccess_Check(Sema &S, else if (size.getBitWidth() < index.getBitWidth()) size = size.sext(index.getBitWidth()); - if (index.slt(size)) + // Don't warn for valid indexes, or arrays of size 1 (which are often + // tail-allocated arrays that are emulating flexible arrays in C89 code). + if (index.slt(size) || size == 1) return; S.DiagRuntimeBehavior(E->getBase()->getLocStart(), BaseExpr, |
