修改文件中的%d的会出错，如何解决？错误代码-1073741819

#include <stdio.h>
#include <stdlib.h>

void replaceFileContent(const char *filename) {
    FILE *file = fopen(filename, "r+");
    if (file == NULL) {
        printf("无法打开文件\n");
        return;
    }

    char *line = NULL;
    size_t len = 0;
    ssize_t read;

    while ((read = getline(&line, &len, file)) != -1) {
        char *ptr = line;
        char *newLine = (char *)malloc(len * sizeof(char));
        char *newPtr = newLine;
        int isReplaced = 0;

        while (*ptr != '\0') {
            if (*ptr == '%' && *(ptr + 1) == 'd') {
                int value = 100;  // 这里可以根据实际情况替换为你想要的数值
                sprintf(newPtr, "%d", value);
                newPtr += strlen(newPtr);
                ptr += 2;
                isReplaced = 1;
            } else {
                *newPtr++ = *ptr++;
            }
        }

        if (isReplaced) {
            *newPtr = '\0';
            fseek(file, -read, SEEK_CUR);
            fputs(newLine, file);
        }

        free(newLine);
    }

    free(line);
    fclose(file);
}

int main() {
    const char *filename = "path_to_your_file.txt";
    replaceFileContent(filename);
    return 0;
}