在 C++ 代码中，我为矩阵分配内存，并在代码中间的主版本结束时调用汇编程序插入过程 matrix_transformations。当我释放内存时出现错误。如果我在 masm 代码中释放内存，错误就在那里，如果没有，它在 main 末尾的 C++ 中。
#include <iostream>
#include <string>
#include <limits>
extern "C" void __fastcall matrix_transformations(int** p_matrix, int u_size);
int input_int(bool allow_negative);
void input_matrix(int** matrix, int size);
void output_matrix(int* const* const matrix, int size);
using std::cout;
using std::endl;
using std::cin;
using std::string;
int input_int(bool allow_negative = true)
{
int num;
while (true)
{
std::cin >> num;
if (std::cin.fail())
{
// Input is not a valid integer
std::cin.clear(); // Clear the error flag
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
std::cout << "Invalid input. Please try again.\n";
}
else if (!allow_negative && num < 0)
{
// Input is negative but negatives are not allowed
std::cout << "Negative input not allowed. Please try again.\n";
}
else
{
// Input is valid
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
return num;
}
}
}
void input_matrix(int** const matrix, const int size)
{
for (auto i = 0; i < size; ++i)
for (auto j = 0; j < size; ++j)
{
std::cout << "M[" << i << "][" << j << "]: ";
matrix[i][j] = input_int();
}
}
void output_matrix(int* const* const matrix, const int size)
{
for (auto i = 0; i < size; ++i)
{
for (auto j = 0; j < size; ++j)
cout << matrix[i][j] << ' ';
cout << endl;
}
}
int main(int argc, char** argv)
{
cout << "Enter size of square matrix: ";
int size = input_int(false);
int** matrix = new int* [size];
for (auto i = 0; i < size; ++i)
matrix[i] = new int[size];
input_matrix(matrix, size);
output_matrix(matrix, size);
matrix_transformations(matrix, size);
cout << endl << endl;
output_matrix(matrix, size);
for (auto i = 0; i < size; ++i)
delete[] matrix[i];
delete[] matrix;
return 0;
}
.586
.model flat, C
option casemap:none
include masm32rt.inc
.code
ALIGN 8
; Sets default language features such as calling convention.
OPTION LANGUAGE: SYSCALL
@matrix_transformations@8 PROC
; ecx - pointer to matrix
; edx - size
local hHeap :dword
local hHeap2 :dword
local pArr :dword ; Pointer to upper array of matrix triangle
local pArr2 :dword ; Pointer to lower array of matrix triangle
local triangleLen :dword ; Length of the matrix triangle
; Test if the size of the matrix is odd
test edx, 1
.if !ZERO?
; If the matrix has even elements, we don't need to do anything.
; Get the center of the matrix
mov eax, edx
shr eax, 1 ; center of matrix
; Calculate the size of a row in bytes
mov ebx, sizeof dword
push edx
mul ebx
pop edx
; Get the element at the center of the matrix
mov esi, ecx
mov edi, [esi + eax] ; center of rows
mov eax, [edi + eax] ; center of cols
; Check if the center element is zero
.if eax == 0
; If the center element is zero, we need to transform the matrix.
; Create two heaps to allocate memory
push ecx ; save pointer to array
push edx ; save size to array
invoke HeapCreate, HEAP_GENERATE_EXCEPTIONS, 0, 0
mov hHeap, eax
invoke HeapCreate, HEAP_GENERATE_EXCEPTIONS, 0, 0
mov hHeap2, eax
pop edx ; restore
pop ecx
; Calculate the length of the matrix triangle
xor eax, eax
mov ebx, edx
.while ebx > 1
sub ebx, 2
add eax, ebx
.endw
shl eax, 2
mov triangleLen, eax
push ecx ; save pointer to array
push edx ; save size to array
; Allocate memory for the upper triangle of the matrix
invoke HeapAlloc, hHeap, HEAP_ZERO_MEMORY, triangleLen
mov pArr, eax
; Allocate memory for the lower triangle of the matri
invoke HeapAlloc, hHeap, HEAP_ZERO_MEMORY, triangleLen
mov pArr2, eax
pop edx ; restore
pop ecx
; Fill the upper triangle of the matrix
push ecx
push edx
mov ebx, edx
mov esi, ecx
mov eax, 0
mov ecx, 1
sub ebx, 2
.while ebx != -1 ; we sub from odd num -2
mov edi, [esi]
push ecx
imul ecx, 4
add edi, ecx
pop ecx
push ebx ;
mov edx, [pArr]
.while ebx != 0
mov [edx+eax], edi
add eax, sizeof dword
add edi, sizeof dword
dec ebx
.endw
pop ebx
add esi, sizeof dword
inc ecx
sub ebx, 2
.endw
pop edx
pop ecx
;------------------------------------------;
;---Lower triangle to 2nd array------------;
push ecx
push edx
mov ebx, edx
mov esi, ecx
push ebx
dec ebx
imul ebx, sizeof dword
add esi, ebx
pop ebx
mov eax, 0
mov ecx, 1
sub ebx, 2
.while ebx != -1 ; we sub from odd num -2
mov edi, [esi]
push ecx
imul ecx, 4
add edi, ecx
pop ecx
push ebx ;
mov edx, [pArr2]
.while ebx != 0
mov [edx+eax], edi
add eax, sizeof dword
add edi, sizeof dword
dec ebx
.endw
pop ebx
sub ebx, 2
sub esi, 4 ;sizeof dword
inc ecx
.endw
pop edx
pop ecx
;------------------------------------------;
; exchange numbers ;
mov ebx, triangleLen
shr ebx, 2
push ecx
mov esi, [pArr]
mov edi, [pArr2]
.while ebx != 0
mov eax, [esi]
mov ecx, [eax]
mov eax, [edi]
xchg ecx, [eax]
mov eax, [esi]
mov [eax], ecx
add esi, sizeof dword
add edi, sizeof dword
dec ebx
.endw
pop ecx
;------------------------------------------;
;invoke HeapFree, hHeap, 0, pArr
;invoke HeapFree, hHeap2, 0, pArr2
;invoke HeapDestroy, hHeap
;invoke HeapDestroy, hHeap2
.endif
.endif
ret
@matrix_transformations@8 ENDP
OPTION LANGUAGE: C
END
我试图通过在 MASM32 过程中分配一个局部变量来摆脱动态内存，但我仍然在 C++ 中遇到 delete[] 错误
我的解决方案是用 alloc 和 free 代替 new 和 delete 的使用。