Bugfix: The signal is not properly closing.

The signal id is a file descriptor.
File descriptors are unset when at -1 rather than 0.

The not zero check is therefore invalid.
Replace that check with a check against negative one.

diff --git a/level_0/f_signal/c/signal.c b/level_0/f_signal/c/signal.c
index 06d9e767c7300a28549c2f154ab273386f5a6fb5..acfdde2fe5c1a5ae3d2450eabf02bcedfed961e5 100644 (file)
--- a/level_0/f_signal/c/signal.c
+++ b/level_0/f_signal/c/signal.c
@@ -27,7 +27,7 @@ extern "C" {
       if (!signal) return F_status_set_error(F_parameter);
     #endif // _di_level_0_parameter_checking_
 
-    if (!signal->id) {
+    if (signal->id == -1) {
       return F_data_not;
     }