From: Vsevolod Stakhov <vsevolod@rspamd.com>
Date: Thu, 5 Feb 2026 14:04:57 +0000 (+0000)
Subject: [Fix] clang-plugin: add null check for struct type in check_struct_type
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e02ee6b498825474c9f777f0427b98d98eb7185;p=thirdparty%2Frspamd.git

[Fix] clang-plugin: add null check for struct type in check_struct_type
---

diff --git a/clang-plugin/printf_check.cc b/clang-plugin/printf_check.cc
index 39c6b2c8e2..bba4e83673 100644
--- a/clang-plugin/printf_check.cc
+++ b/clang-plugin/printf_check.cc
@@ -764,6 +764,14 @@ check_struct_type(const Expr *arg, struct PrintfArgChecker *ctx,
 	}
 
 	auto struct_type = desugared_type->getAsStructureType();
+	if (!struct_type) {
+		/* Could be a C++ class or union, not a struct */
+		auto err_msg = std::string("not a struct type for ") + fmt + " arg: " +
+					   arg->getType().getAsString();
+		print_error(err_msg.c_str(),
+					arg, ctx->past, ctx->pci);
+		return false;
+	}
 	auto struct_decl = struct_type->getDecl();
 	auto struct_def = struct_decl->getNameAsString();