Fix use-of-uninitialized-value of EG(last_fatal_error_backtrace) with ZTS

iluuu1994 · iluuu1994 · commit 9931ba771bda · 2025-01-30T17:57:16.000+01:00
Static variables are zeroed, but ts memory is not. Hence, we need to do
it ourselves.
diff --git a/Zend/zend.c b/Zend/zend.c
@@ -847,6 +847,8 @@ static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{
 			sizeof(executor_globals->strtod_state.freelist));
 	executor_globals->strtod_state.p5s = NULL;
 	executor_globals->strtod_state.result = NULL;
+	executor_globals->fatal_error_backtrace_on = false;
+	ZVAL_UNDEF(&executor_globals->last_fatal_error_backtrace);
 }
 /* }}} */
 

Original file line number	Diff line number	Diff line change
`@@ -847,6 +847,8 @@ static void executor_globals_ctor(zend_executor_globals executor_globals) / {{`
`847`	`847`	`sizeof(executor_globals->strtod_state.freelist));`
`848`	`848`	`executor_globals->strtod_state.p5s = NULL;`
`849`	`849`	`executor_globals->strtod_state.result = NULL;`
	`850`	`+ executor_globals->fatal_error_backtrace_on = false;`
	`851`	`+ ZVAL_UNDEF(&executor_globals->last_fatal_error_backtrace);`
`850`	`852`	`}`
`851`	`853`	`/* }}} */`
`852`	`854`