simple ignore arguments in backtrace implementation

Author: krakjoe

Zend/tests/debug_backtrace_ignore_args.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Exceptions ignoring arguments
+--FILE--
+<?php
+$function = function(string $user, string $pass) {
+    throw new Exception();
+};
+
+ini_set("zend.backtrace_ignore_args", 1);
+
+$function("secrets", "arewrong");
+?>
+--EXPECTF--
+Fatal error: Uncaught Exception in %sdebug_backtrace_ignore_args.php:3
+Stack trace:
+#0 %sdebug_backtrace_ignore_args.php(8): {closure}()
+#1 {main}
+  thrown in %sdebug_backtrace_ignore_args.php on line 3

Zend/zend.c

@@ -164,6 +164,8 @@ static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
 }
 /* }}} */
 
+
+
 ZEND_INI_BEGIN()
 	ZEND_INI_ENTRY("error_reporting",				NULL,		ZEND_INI_ALL,		OnUpdateErrorReporting)
 	STD_ZEND_INI_ENTRY("zend.assertions",				"1",    ZEND_INI_ALL,       OnUpdateAssertions,           assertions,   zend_executor_globals,  executor_globals)
@@ -174,6 +176,7 @@ ZEND_INI_BEGIN()
 #ifdef ZEND_SIGNALS
 	STD_ZEND_INI_BOOLEAN("zend.signal_check", "0", ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
 #endif
+    STD_ZEND_INI_BOOLEAN("zend.backtrace_ignore_args",	"0",	ZEND_INI_ALL,		OnUpdateBool, backtrace_ignore_args, zend_executor_globals, executor_globals)
 ZEND_INI_END()
 
 ZEND_API size_t zend_vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap) /* {{{ */

Zend/zend_builtin_functions.c

@@ -2436,6 +2436,10 @@ ZEND_API void zend_fetch_debug_backtrace(zval *return_value, int skip_last, int
 		}
 	}
 
+    if (EG(backtrace_ignore_args)) {
+        options |= DEBUG_BACKTRACE_IGNORE_ARGS;
+    }
+
 	while (ptr && (limit == 0 || frameno < limit)) {
 		frameno++;
 		array_init(&stack_frame);

Zend/zend_globals.h

@@ -234,6 +234,8 @@ struct _zend_executor_globals {
 
 	HashTable weakrefs;
 
+    zend_bool backtrace_ignore_args;
+
 	void *reserved[ZEND_MAX_RESERVED_RESOURCES];
 };