Segmentation Fault When Accessing Struct in Function - C Version 11 guide
I'm experimenting with Can someone help me understand I'm working with a segmentation fault when trying to access a member of a struct passed to a function in C, specifically in a project using C11. I've defined a struct `Person` and a function `printPersonInfo` to print the name and age of a `Person`. However, when I call this function, it crashes with a segmentation fault. Here's the code snippet for clarity: ```c #include <stdio.h> #include <stdlib.h> typedef struct { char name[50]; int age; } Person; void printPersonInfo(Person *p) { printf("Name: %s, Age: %d\n", p->name, p->age); } int main() { Person *person = malloc(sizeof(Person)); if (person == NULL) { fprintf(stderr, "Memory allocation failed!\n"); return 1; } // Simulate an uninitialized struct // strcpy(person->name, "John Doe"); person->age = 30; printPersonInfo(person); free(person); return 0; } ``` I commented out the `strcpy` for the name, thinking that maybe it was an uninitialized scenario, but even when I leave it commented, I still receive the segmentation fault when trying to access `p->name` inside `printPersonInfo`. I’ve checked the pointers and made sure I’m properly allocating memory, yet the segmentation fault continues. When I run this code with Valgrind, it indicates a read behavior on an invalid memory location. Any suggestions on what might be going wrong or how I can better debug this scenario? I've verified that the struct is being allocated correctly and that I'm not accidentally freeing it before use. This is part of a larger application I'm building. Any examples would be super helpful. For reference, this is a production application. What are your experiences with this?