chore: initial commit (extracted from Launchers monorepo)

Plugin: ns7zip v2.0.0
Architectures: x86-ansi, x86-unicode, amd64-unicode
License: LGPL-2.1-or-later

versions/26.00/CPP/Common/NewHandler.h

@@ -0,0 +1,121 @@
+// Common/NewHandler.h
+
+#ifndef ZIP7_INC_COMMON_NEW_HANDLER_H
+#define ZIP7_INC_COMMON_NEW_HANDLER_H
+
+/*
+NewHandler.h and NewHandler.cpp allows to solve problem with compilers that
+don't throw exception in operator new().
+
+This file must be included before any code that uses operators new() or delete()
+and you must compile and link "NewHandler.cpp", if you use some old MSVC compiler.
+
+DOCs:
+  Since ISO C++98, operator new throws std::bad_alloc when memory allocation fails.
+  MSVC 6.0 returned a null pointer on an allocation failure.
+  Beginning in VS2002, operator new conforms to the standard and throws on failure.
+
+  By default, the compiler also generates defensive null checks to prevent
+  these older-style allocators from causing an immediate crash on failure.
+  The /Zc:throwingNew option tells the compiler to leave out these null checks,
+  on the assumption that all linked memory allocators conform to the standard.
+
+The operator new() in some MSVC versions doesn't throw exception std::bad_alloc.
+MSVC 6.0 (_MSC_VER == 1200) doesn't throw exception.
+The code produced by some another MSVC compilers also can be linked
+to library that doesn't throw exception.
+We suppose that code compiled with VS2015+ (_MSC_VER >= 1900) throws exception std::bad_alloc.
+For older _MSC_VER versions we redefine operator new() and operator delete().
+Our version of operator new() throws CNewException() exception on failure.
+
+It's still allowed to use redefined version of operator new() from "NewHandler.cpp"
+with any compiler. 7-Zip's code can work with std::bad_alloc and CNewException() exceptions.
+But if you use some additional code (outside of 7-Zip's code), you must check
+that redefined version of operator new() is not problem for your code.
+*/
+
+#include <stddef.h>
+
+#ifdef _WIN32
+// We can compile my_new and my_delete with _fastcall
+/*
+void * my_new(size_t size);
+void my_delete(void *p) throw();
+// void * my_Realloc(void *p, size_t newSize, size_t oldSize);
+*/
+#endif
+
+
+#if defined(_MSC_VER) && (_MSC_VER < 1600)
+  // If you want to use default operator new(), you can disable the following line
+  #define Z7_REDEFINE_OPERATOR_NEW
+#endif
+
+
+#ifdef Z7_REDEFINE_OPERATOR_NEW
+
+// std::bad_alloc can require additional DLL dependency.
+// So we don't define CNewException as std::bad_alloc here.
+
+class CNewException {};
+
+void *
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator new(size_t size);
+
+/*
+#if 0 && defined(_MSC_VER) && _MSC_VER == 1600
+  #define Z7_OPERATOR_DELETE_SPEC_THROW0
+#else
+  #define Z7_OPERATOR_DELETE_SPEC_THROW0 throw()
+#endif
+*/
+#if defined(_MSC_VER) && _MSC_VER == 1600
+#pragma warning(push)
+#pragma warning(disable : 4986) // 'operator delete': exception specification does not match previous declaration
+#endif
+
+void
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator delete(void *p) throw();
+
+void
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator delete(void *p, size_t n) throw();
+
+#if defined(_MSC_VER) && _MSC_VER == 1600
+#pragma warning(pop)
+#endif
+
+
+#else
+
+#include <new>
+
+#define CNewException std::bad_alloc
+
+#endif
+
+/*
+#ifdef _WIN32
+void *
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator new[](size_t size);
+
+void
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator delete[](void *p) throw();
+#endif
+*/
+
+#endif