Fixes memory leak in DisplayList resource. (Kenix3#575)

Author: Kenix3

src/resource/factory/DisplayListFactory.cpp

@@ -278,7 +278,9 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
 
                 g.words.w0 &= 0x00FFFFFF;
                 g.words.w0 += (G_MTX_OTR2 << 24);
-                g.words.w1 = (uintptr_t)malloc(fName.size() + 1);
+                char* str = (char*)malloc(fName.size() + 1);
+                g.words.w1 = (uintptr_t)str;
+                dl->Strings.push_back(str);
                 strcpy((char*)g.words.w1, fName.data());
             }
         } else if (childName == "SetCycleType") {
@@ -395,10 +397,11 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
             std::string fName = child->Attribute("Path");
             // fName = ">" + fName;
 
-            char* filePath = (char*)malloc(fName.size() + 1);
-            strcpy(filePath, fName.data());
+            char* str = (char*)malloc(fName.size() + 1);
+            dl->Strings.push_back(str);
+            strcpy((char*)str, fName.data());
 
-            g = GsSpVertexOtR2P1(filePath);
+            g = GsSpVertexOtR2P1(str);
 
             dl->Instructions.push_back(g);
 
@@ -450,7 +453,9 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
                 g = { gsDPSetTextureImage(fmtVal, sizVal, width + 1, 0) };
                 g.words.w0 &= 0x00FFFFFF;
                 g.words.w0 += (G_SETTIMG_OTR_FILEPATH << 24);
-                g.words.w1 = (uintptr_t)malloc(fName.size() + 1);
+                char* str = (char*)malloc(fName.size() + 1);
+                dl->Strings.push_back(str);
+                g.words.w1 = (uintptr_t)str;
                 strcpy((char*)g.words.w1, fName.data());
             }
 
@@ -893,7 +898,9 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
             g = { gsDPSetTextureImage(fmt, siz, width + 1, 0) };
             g.words.w0 &= 0x00FFFFFF;
             g.words.w0 += (G_SETTIMG_OTR_FILEPATH << 24);
-            g.words.w1 = (uintptr_t)malloc(fName.size() + 1);
+            char* str = (char*)malloc(fName.size() + 1);
+            dl->Strings.push_back(str);
+            g.words.w1 = (uintptr_t)str;
             strcpy((char*)g.words.w1, fName.data());
 
             dl->Instructions.push_back(g);
@@ -952,6 +959,7 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
                 g = { gsSPBranchListOTRHash(seg | 1) };
             } else {
                 char* dlPath2 = (char*)malloc(strlen(dlPath.c_str()) + 1);
+                dl->Strings.push_back(dlPath2);
                 strcpy(dlPath2, dlPath.c_str());
 
                 g = gsSPBranchListOTRFilePath(dlPath2);
@@ -963,6 +971,7 @@ std::shared_ptr<Ship::IResource> ResourceFactoryXMLDisplayListV0::ReadResource(s
                 g = { gsSPDisplayList(seg | 1) };
             } else {
                 char* dlPath2 = (char*)malloc(strlen(dlPath.c_str()) + 1);
+                dl->Strings.push_back(dlPath2);
                 strcpy(dlPath2, dlPath.c_str());
 
                 g = gsSPDisplayListOTRFilePath(dlPath2);

src/resource/type/DisplayList.cpp

@@ -1,9 +1,16 @@
 #include "resource/type/DisplayList.h"
+#include <memory>
 
 namespace LUS {
 DisplayList::DisplayList() : Resource(std::shared_ptr<Ship::ResourceInitData>()) {
 }
 
+DisplayList::~DisplayList() {
+    for (char* string : Strings) {
+        free(string);
+    }
+}
+
 Gfx* DisplayList::GetPointer() {
     return (Gfx*)Instructions.data();
 }

src/resource/type/DisplayList.h

@@ -11,10 +11,12 @@ class DisplayList : public Ship::Resource<Gfx> {
     using Resource::Resource;
 
     DisplayList();
+    ~DisplayList();
 
     Gfx* GetPointer() override;
     size_t GetPointerSize() override;
 
     std::vector<Gfx> Instructions;
+    std::vector<char*> Strings;
 };
 } // namespace LUS