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prctl(PR_SET_PDEATH_SIG)

我尝试使用SDL_image插件加载图像，并将其宽度和高度存储在结构中（以及从曲面创建的纹理）。

尝试在第93行上运行#include <SDL.h> #include <SDL_image.h> #include <stdio.h> typedef struct{ SDL_Texture *texture; // The image/sprite itself int width; // Sprite width int height; // Sprite height } Sprite; Sprite *createSprite(SDL_Renderer *r, char *path); int main(int argc, char *argv[]){ // Initialise SDL and SDL_image SDL_Init(SDL_INIT_VIDEO); IMG_Init(IMG_INIT_PNG); // Create window SDL_Window *window = SDL_CreateWindow( "VN", // Title SDL_WINDOWPOS_CENTERED, // Initial x position SDL_WINDOWPOS_CENTERED, // Initial y position 1280, // Width 720, // Height 0 // Flags ); if(window == NULL){ printf("Failed to create window. %s\n", SDL_GetError()); return 1; } // Create renderer SDL_Renderer *renderer = SDL_CreateRenderer( window, // Window -1, // Monitor index (-1 for first available) SDL_RENDERER_ACCELERATED // Flags ); if(renderer == NULL){ printf("Failed to create renderer. %s\n", SDL_GetError()); return 1; } // Set up event handling SDL_Event event; while(1){ // Handle events/input while(SDL_PollEvent(&event) != 0){ // Check if user wants to quit (press window close button) if(event.type == SDL_QUIT){ return 1; } } // Set screen colour to white SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0); // Render white to screen (clear screen) SDL_RenderClear(renderer); // Update screen SDL_RenderPresent(renderer); } // Exit SDL and SDL_image SDL_Quit(); IMG_Quit(); return 0; } Sprite *createSprite(SDL_Renderer *r, char *path){ printf("Entered createSprite()\n"); // Create a Sprite structure, containing an image (texture) and its dimensions Sprite *newSprite = NULL; SDL_Texture *spriteTexture = NULL; // Temporary surface (for loading texture) SDL_Surface *tempSurface = NULL; // Load image from path tempSurface = IMG_Load(path); if(tempSurface == NULL){ printf("Failed to load image '%s'. %s\n", path, IMG_GetError()); } else{ spriteTexture = SDL_CreateTextureFromSurface(r, tempSurface); if(spriteTexture == NULL){ printf("Failed to create texture from '%s'. %s\n", path, SDL_GetError()); } else{ // Store texture, image width & height in Sprite structure newSprite->texture = spriteTexture; newSprite->width = tempSurface->w; newSprite->height = tempSurface->h; } } // Free memory of temp surface SDL_FreeSurface(tempSurface); printf("Leaving createSprite()\n"); return newSprite; }部分时会崩溃。我可以提供尽可能多的信息，我很害怕。有什么想法吗？

我尝试使用SDL_image插件加载图像，并将其宽度和高度存储在结构中（以及从曲面创建的纹理）。

Answer 1

问题是你没有在Sprite函数中为createSprite分配内存。您将其设置为NULL，然后尝试访问当然失败的位置。

试试这个：

Sprite *createSprite(SDL_Renderer *r, char *path){
    printf("Entered createSprite()\n");

    // Create a Sprite structure, containing an image (texture) and its dimensions
    Sprite *newSprite = new Sprite();   //<<- this is where you allocate the memory
    SDL_Texture *spriteTexture = NULL;

    // Temporary surface (for loading texture)
    SDL_Surface *tempSurface = NULL;

    // Load image from path
    tempSurface = IMG_Load(path);
    if(tempSurface == NULL){
        printf("Failed to load image '%s'. %s\n", path, IMG_GetError());
    } else{
        spriteTexture = SDL_CreateTextureFromSurface(r, tempSurface);
        if(spriteTexture == NULL){
            printf("Failed to create texture from '%s'. %s\n", path, SDL_GetError());
        } else{
            // Store texture, image width & height in Sprite structure
            newSprite->texture = spriteTexture;
            newSprite->width = tempSurface->w;
            newSprite->height = tempSurface->h;
        }
    }

    // Free memory of temp surface
    SDL_FreeSurface(tempSurface);

    printf("Leaving createSprite()\n");
    return newSprite;
}

SDL2 - 尝试将表面信息复制到结构时崩溃。没有给出错误消息

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