From 0fe3a5fd970bdf8c082394222f49c7288e5c22f6 Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Wed, 20 May 2026 10:48:41 +0200
Subject: [PATCH 1/2] Update checksizeof.cpp

---
 lib/checksizeof.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/checksizeof.cpp b/lib/checksizeof.cpp
index 134cca92b7f..e211764ad3a 100644
--- a/lib/checksizeof.cpp
+++ b/lib/checksizeof.cpp
@@ -233,7 +233,8 @@ void CheckSizeof::checkSizeofForPointerSize()
             // Now check for the sizeof usage: Does the level of pointer indirection match?
             const Token * const tokLink = tokSize->linkAt(1);
             if (tokLink && tokLink->strAt(-1) == "*") {
-                if (variable && variable->valueType() && variable->valueType()->pointer == 1 && variable->valueType()->type != ValueType::VOID)
+                if (variable && variable->valueType() && variable->valueType()->pointer == 1 && variable->valueType()->type != ValueType::VOID &&
+                    variable->valueType()->isTypeEqual(tokSize->next()->astOperand2()->valueType()))
                     sizeofForPointerError(variable, variable->str());
                 else if (variable2 && variable2->valueType() && variable2->valueType()->pointer == 1 && variable2->valueType()->type != ValueType::VOID)
                     sizeofForPointerError(variable2, variable2->str());

From fa8291fef0a3ce4c906e91f5938c9236e2165abc Mon Sep 17 00:00:00 2001
From: chrchr-github <78114321+chrchr-github@users.noreply.github.com>
Date: Wed, 20 May 2026 10:49:28 +0200
Subject: [PATCH 2/2] Update testsizeof.cpp

---
 test/testsizeof.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/testsizeof.cpp b/test/testsizeof.cpp
index b25afe8d153..fca8cb7ed7a 100644
--- a/test/testsizeof.cpp
+++ b/test/testsizeof.cpp
@@ -722,6 +722,12 @@ class TestSizeof : public TestFixture {
               "  return AtomName;\n"
               "}");
         ASSERT_EQUALS("", errout_str());
+
+        check("void* f(size_t n) {\n" // #11754
+              "    char* p = malloc(n * sizeof(void*));\n"
+              "    return p;\n"
+              "}");
+        ASSERT_EQUALS("", errout_str());
     }
 
     void checkPointerSizeofStruct() {