| 42 | } |
| 43 | |
| 44 | inline void crash_handler(int sig) { |
| 45 | // Prevent recursion if handler crashes |
| 46 | static volatile sig_atomic_t already_dumping = 0; |
| 47 | if (already_dumping) { |
| 48 | // Recursive crash - bail out immediately |
| 49 | signal(sig, SIG_DFL); |
| 50 | raise(sig); |
| 51 | return; |
| 52 | } |
| 53 | already_dumping = 1; |
| 54 | |
| 55 | fprintf(stderr, "\n=== INTERNAL CRASH HANDLER (SIGNAL %d) ===\n", sig); |
| 56 | |
| 57 | // Internal stack trace dump |
| 58 | print_stacktrace_libunwind(); |
| 59 | |
| 60 | fprintf(stderr, "=== END INTERNAL HANDLER ===\n\n"); |
| 61 | fflush(stdout); |
| 62 | fflush(stderr); |
| 63 | |
| 64 | // CHAINING: Uninstall our handler and re-raise signal |
| 65 | // This allows external debuggers to catch the signal |
| 66 | fprintf(stderr, "Uninstalling crash handler and re-raising signal %d for external debugger...\n", sig); |
| 67 | fflush(stderr); |
| 68 | |
| 69 | // Restore default handler |
| 70 | signal(sig, SIG_DFL); |
| 71 | |
| 72 | // Re-raise the signal - will now go to default handler or external debugger |
| 73 | raise(sig); |
| 74 | |
| 75 | // If we get here, signal didn't terminate us - exit manually |
| 76 | exit(1); |
| 77 | } |
| 78 | |
| 79 | inline void setup_crash_handler() { |
| 80 | // Check if crash handler should be disabled (for debugger attachment) |
nothing calls this directly
no test coverage detected