diff --git a/Zend/tests/oss-fuzz-539121135.phpt b/Zend/tests/oss-fuzz-539121135.phpt
new file mode 100644
index 000000000000..bf44d659cd7b
--- /dev/null
+++ b/Zend/tests/oss-fuzz-539121135.phpt
@@ -0,0 +1,12 @@
+--TEST--
+OSS-Fuzz-539121135: Use-of-uninitialized-value ast->lineno
+--FILE--
+<?php
+
+namespace {}
+
+''
+
+?>
+--EXPECTF--
+Fatal error: No code may exist outside of namespace {} in %s on line %d
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index 450b192ac482..2466710f9cee 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -12215,7 +12215,7 @@ static void zend_compile_stmt(zend_ast *ast) /* {{{ */
 		return;
 	}
 
-	CG(zend_lineno) = ast->lineno;
+	CG(zend_lineno) = zend_ast_get_lineno(ast);
 
 	if ((CG(compiler_options) & ZEND_COMPILE_EXTENDED_STMT) && !zend_is_unticked_stmt(ast)) {
 		zend_do_extended_stmt(NULL);
diff --git a/docs/source/miscellaneous/writing-tests.rst b/docs/source/miscellaneous/writing-tests.rst
index fb66db79e57c..7365267648a9 100644
--- a/docs/source/miscellaneous/writing-tests.rst
+++ b/docs/source/miscellaneous/writing-tests.rst
@@ -237,8 +237,8 @@ and not in the INI section. This is because of the order in which settings are c
 
 If a TZ environmental variable is found the INI setting will be ignored.
 
-Tests that run, or only have matching EXPECT output, on 32bit platforms can use a SKIPIF
-section like:
+Tests that run, or only have matching EXPECT output, on 32bit platforms can use a SKIPIF section
+like:
 
 .. code:: php