From 8226b3135c47bc609aa68b84e3309f8e6dc08964 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Fri, 27 Mar 2026 17:01:25 +0100
Subject: [PATCH 1/2] Update checkio.cpp

---
 lib/checkio.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/checkio.cpp b/lib/checkio.cpp
index ee1b4e36c73..0e1d0395146 100644
--- a/lib/checkio.cpp
+++ b/lib/checkio.cpp
@@ -674,7 +674,6 @@ void CheckIO::checkFormatString(const Token * const tok,
                     ++i;
                 }
                 if (scanf_s && !skip) {
-                    numSecure++;
                     if (argListTok) {
                         argListTok = argListTok->nextArgument();
                     }
@@ -722,7 +721,7 @@ void CheckIO::checkFormatString(const Token * const tok,
                                     if (!(argInfo.isArrayOrPointer() && argInfo.element && !argInfo.typeToken->isStandardType()))
                                         invalidScanfArgTypeError_s(tok, numFormat, specifier, &argInfo);
                                 }
-                                if (scanf_s && argInfo.typeToken) {
+                                if (scanf_s) {
                                     numSecure++;
                                     if (argListTok) {
                                         argListTok = argListTok->nextArgument();

From 08b642f5d092ccd6c15f1dc718fd3c62d6976653 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Fri, 27 Mar 2026 17:07:12 +0100
Subject: [PATCH 2/2] Update testio.cpp

---
 test/testio.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/testio.cpp b/test/testio.cpp
index b402f5c0aa1..ec6a87a1e16 100644
--- a/test/testio.cpp
+++ b/test/testio.cpp
@@ -4800,6 +4800,13 @@ class TestIO : public TestFixture {
               "    wscanf_s(L\"%4[^-]\", msStr1, _countof(msStr1));\n"
               "}\n", dinit(CheckOptions, $.platform = Platform::Type::Win32W));
         ASSERT_EQUALS("", errout_str());
+
+        check("void f(const char* c) {\n"
+              "    const size_t N = 5;\n"
+              "    char buf[N];\n"
+              "    sscanf_s(c, \"%4[^.]\", buf, N);\n"
+              "}\n", dinit(CheckOptions, $.platform = Platform::Type::Win64));
+        ASSERT_EQUALS("", errout_str());
     }
 
     void testQStringFormatArguments() {