From f6d929a9f72d50d7f0a2469a4460bdcee4497bc7 Mon Sep 17 00:00:00 2001
From: chrchr <christian.riesch@live.com>
Date: Thu, 11 Jan 2024 11:52:54 +0100
Subject: [PATCH] std::realloc

---
 lib/library.cpp  | 8 +++++---
 test/cfg/std.cpp | 7 +++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/lib/library.cpp b/lib/library.cpp
index b172bdc6914..d28d6e02070 100644
--- a/lib/library.cpp
+++ b/lib/library.cpp
@@ -1061,7 +1061,7 @@ bool Library::isuninitargbad(const Token *ftok, int argnr, int indirect, bool *h
 const Library::AllocFunc* Library::getAllocFuncInfo(const Token *tok) const
 {
     std::string funcname = getFunctionName(tok);
-    if (startsWith(funcname, "std::"))
+    if (tok->isCpp() && startsWith(funcname, "std::"))
         funcname.erase(0, 5);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mAlloc, funcname);
 }
@@ -1070,7 +1070,7 @@ const Library::AllocFunc* Library::getAllocFuncInfo(const Token *tok) const
 const Library::AllocFunc* Library::getDeallocFuncInfo(const Token *tok) const
 {
     std::string funcname = getFunctionName(tok);
-    if (startsWith(funcname, "std::"))
+    if (tok->isCpp() && startsWith(funcname, "std::"))
         funcname.erase(0, 5);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mDealloc, funcname);
 }
@@ -1078,7 +1078,9 @@ const Library::AllocFunc* Library::getDeallocFuncInfo(const Token *tok) const
 /** get reallocation info for function */
 const Library::AllocFunc* Library::getReallocFuncInfo(const Token *tok) const
 {
-    const std::string funcname = getFunctionName(tok);
+    std::string funcname = getFunctionName(tok);
+    if (tok->isCpp() && startsWith(funcname, "std::"))
+        funcname.erase(0, 5);
     return isNotLibraryFunction(tok) && functions.find(funcname) != functions.end() ? nullptr : getAllocDealloc(mRealloc, funcname);
 }
 
diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index 455a36528cc..40a4314419b 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -4872,6 +4872,13 @@ void memleak_std_malloc() // #12332
     //cppcheck-suppress memleak
 }
 
+void memleak_std_realloc(void* block, size_t newsize)
+{
+    //cppcheck-suppress [unreadVariable, constVariablePointer]
+    void* p = std::realloc(block, newsize);
+    //cppcheck-suppress memleak
+}
+
 void unusedAllocatedMemory_std_free()
 {
     //cppcheck-suppress unusedAllocatedMemory