/*
    * sdk-diag.c
    * Probes the exact libc/kernel layers the GCC driver depends on:
    * access/stat on the compiler backends, and a direct posix_spawn
    * of cc1plus. Prints one line per probe.
*/

#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <spawn.h>
#include <sys/wait.h>

#define CC1PLUS "/sdk/libexec/gcc/x86_64-montauk/14.2.0/cc1plus"

static void probe(const char *p) {
    struct stat st;
    int a = access(p, X_OK);
    int s = stat(p, &st);
    printf("%-52s access=%d stat=%d", p, a, s);
    if (s == 0) {
        printf(" mode=%o size=%ld", (unsigned)st.st_mode, (long)st.st_size);
    }
    printf("\n");
}

int main(void) {
    probe(CC1PLUS);
    probe("/sdk/libexec/gcc/x86_64-montauk/14.2.0");
    probe("/sdk/libexec/gcc");
    probe("/sdk/bin/as.elf");
    probe("/tmp");

    pid_t pid = -1;
    char *argv[] = { (char *)"cc1plus", (char *)"--version", 0 };
    int r = posix_spawn(&pid, CC1PLUS, 0, 0, argv, 0);
    printf("posix_spawn(cc1plus --version) = %d pid=%d\n", r, (int)pid);
    if (r == 0) {
        int st = -1;
        waitpid(pid, &st, 0);
        printf("cc1plus wait status = %d (exit %d)\n", st, (st >> 8) & 0xFF);
    }
    return 0;
}