// gt-0013: Ifdef-excluded code path
// Expected: UNREACHABLE (tier: imported)
// Vulnerability: CWE-78 (OS Command Injection)
// Compile with: gcc -DPRODUCTION main.c (LEGACY_SHELL not defined)

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

#define PRODUCTION

void process_command(const char *cmd) {
#ifdef LEGACY_SHELL
    // This code is excluded when LEGACY_SHELL is not defined
    system(cmd);  // SINK: CWE-78 (but unreachable - ifdef excluded)
#else
    // Safe path: just print, don't execute
    printf("Would execute: %s\n", cmd);
#endif
}

int main(int argc, char *argv[]) {
    if (argc > 1) {
        process_command(argv[1]);
    }
    return 0;
}