// gt-0005: Recursive function with sink
// Expected: REACHABLE (tier: executed)
// Vulnerability: CWE-134 (Format String)

#include <stdio.h>
#include <string.h>

char result[1024];

void process_recursive(const char *input, int depth) {
    if (depth <= 0 || strlen(input) == 0) {
        return;
    }
    
    // Vulnerable: format string in recursive context
    sprintf(result + strlen(result), input);  // SINK: CWE-134
    
    // Recurse with modified input
    process_recursive(input + 1, depth - 1);
}

int main(int argc, char *argv[]) {
    result[0] = '\0';
    
    if (argc > 1) {
        process_recursive(argv[1], 5);
        printf("Result: %s\n", result);
    }
    
    return 0;
}