Nit

Author: Girgias

UPGRADING

@@ -19,6 +19,22 @@ PHP 8.4 UPGRADE NOTES
 1. Backward Incompatible Changes
 ========================================
 
+- PCNTL:
+  . The functions pcntl_sigprocmask(), pcntl_sigwaitinfo() and
+    pcntl_sigtimedwait() now throw:
+    - A ValueError if the $signals array is empty (except for
+      pcntl_sigprocmask() if the $mode is SIG_SETMASK).
+    - A TypeError if a value of the $signals array is not an integer
+    - A ValueError if a value of the $signals array is not a valid signal number
+    Moreover, those functions now always return false on failure.
+    In some case previously it could return the value -1.
+  . The function pcntl_sigprocmask() will also now throw:
+    - A ValueError if $mode is not one of SIG_BLOCK, SIG_UNBLOCK, or SIG_SETMASK
+  . The function pcntl_sigtimedwait() will also now throw:
+    - A ValueError if $seconds is less than 0
+    - A ValueError if $nanoseconds is less than 0 or greater than 1e9
+    - A ValueError if both $seconds and $nanoseconds are 0
+
 ========================================
 2. New Features
 ========================================

ext/pcntl/pcntl.c

@@ -901,7 +901,7 @@ PHP_FUNCTION(pcntl_sigtimedwait)
 		RETURN_THROWS();
 	}
 	/* Nanosecond between 0 and 1e9 */
-	if (tv_nsec < 0 || tv_nsec > 1000000000) {
+	if (tv_nsec < 0 || tv_nsec >= 1000000000) {
 		zend_argument_value_error(4, "must be between 0 and 1e9");
 		RETURN_THROWS();
 	}