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Check array lengths to prevent OOB access

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Philipp Hansch 2018-11-23 21:29:27 +01:00
parent c4c9d9fc62
commit 7e7a33c726
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clippy_lints/src/explicit_write.rs
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@ -52,9 +52,12 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
if let ExprKind::MethodCall(ref write_fun, _, ref write_args) = if let ExprKind::MethodCall(ref write_fun, _, ref write_args) =
unwrap_args[0].node; unwrap_args[0].node;
// Obtain the string that should be printed // Obtain the string that should be printed
if write_args.len() > 1;
if let ExprKind::Call(_, ref output_args) = write_args[1].node; if let ExprKind::Call(_, ref output_args) = write_args[1].node;
if output_args.len() > 0;
if let ExprKind::AddrOf(_, ref output_string_expr) = output_args[0].node; if let ExprKind::AddrOf(_, ref output_string_expr) = output_args[0].node;
if let ExprKind::Array(ref string_exprs) = output_string_expr.node; if let ExprKind::Array(ref string_exprs) = output_string_expr.node;
if string_exprs.len() > 0;
if let ExprKind::Lit(ref lit) = string_exprs[0].node; if let ExprKind::Lit(ref lit) = string_exprs[0].node;
if let LitKind::Str(ref write_output, _) = lit.node; if let LitKind::Str(ref write_output, _) = lit.node;
if write_fun.ident.name == "write_fmt"; if write_fun.ident.name == "write_fmt";