# stacktrace

***

**1. Capturing and Printing a Stack Trace**

```cpp
#include <iostream>
#include <execinfo.h>

int main() {
  // Capture the stack trace
  void* buffer[50];
  int size = backtrace(buffer, 50);

  // Print the stack trace
  backtrace_symbols_fd(buffer, size, STDOUT_FILENO);

  return 0;
}
```

**2. Capturing Stack Trace and Storing in a String**

```cpp
#include <iostream>
#include <sstream>
#include <execinfo.h>

int main() {
  // Capture the stack trace
  void* buffer[50];
  int size = backtrace(buffer, 50);

  // Convert the stack trace to a string
  std::ostringstream ss;
  backtrace_symbols_fd(buffer, size, ss.rdbuf()->fd());

  // Print the stack trace
  std::cout << ss.str() << std::endl;

  return 0;
}
```

**3. Capture Stack Trace and Filter by Function Name**

```cpp
#include <iostream>
#include <execinfo.h>

bool filter_func(void* symbol) {
  // Check if the symbol name matches the filter
  return std::string(reinterpret_cast<char*>(symbol)).find("desired_function_name") != std::string::npos;
}

int main() {
  // Capture the stack trace
  void* buffer[50];
  int size = backtrace(buffer, 50);

  // Filter the stack trace
  std::vector<void*> filtered_stack_trace;
  for (int i = 0; i < size; i++) {
    if (filter_func(buffer[i])) {
      filtered_stack_trace.push_back(buffer[i]);
    }
  }

  // Print the filtered stack trace
  backtrace_symbols_fd(filtered_stack_trace.data(), filtered_stack_trace.size(), STDOUT_FILENO);

  return 0;
}
```

**4. Capture Stack Trace and Truncate to a Specific Size**

```cpp
#include <iostream>
#include <execinfo.h>

int main() {
  // Define the desired maximum stack trace size
  const int MAX_SIZE = 10;

  // Capture the stack trace
  void* buffer[50];
  int size = backtrace(buffer, 50);

  // Truncate the stack trace to the desired size
  if (size > MAX_SIZE) {
    size = MAX_SIZE;
  }

  // Print the truncated stack trace
  backtrace_symbols_fd(buffer, size, STDOUT_FILENO);

  return 0;
}
```

**5. Capture and Store Stack Trace in a Buffer**

```cpp
#include <iostream>
#include <cstdio>
#include <execinfo.h>

int main() {
  // Define the buffer size
  const int BUFFER_SIZE = 1000;

  // Create the buffer
  char buffer[BUFFER_SIZE];

  // Capture the stack trace
  backtrace(buffer, BUFFER_SIZE);

  // Print the stack trace
  printf("Stack trace:\n%s\n", buffer);

  return 0;
}
```

**6. Capture and Store Stack Trace in a File**

```cpp
#include <iostream>
#include <fstream>
#include <execinfo.h>

int main() {
  // Create an output file
  std::ofstream file("stacktrace.txt");

  // Capture the stack trace
  void* buffer[50];
  int size = backtrace(buffer, 50);

  // Print the stack trace to the file
  backtrace_symbols_fd(buffer, size, file.rdbuf()->fd());

  // Close the file
  file.close();

  return 0;
}
```

**7. Capture and Format Stack Trace Using Custom Formatter**

```cpp
#include <iostream>
#include <execinfo.h>
#include <sstream>

// Custom formatter function
std::string format_stack_frame(void* frame) {
  char symbol[1024];

  if (backtrace_symbols

```