diff --git a/ext/opcache/jit/zend_jit_ir.c b/ext/opcache/jit/zend_jit_ir.c
index aee2afa7a51..0f2a149eadb 100644
--- a/ext/opcache/jit/zend_jit_ir.c
+++ b/ext/opcache/jit/zend_jit_ir.c
@@ -14733,7 +14733,11 @@ result_fetched:
 	}
 
 	if (may_throw) {
-		zend_jit_check_exception(jit);
+		if (Z_MODE(res_addr) == IS_REG) {
+			zend_jit_check_exception_undef_result(jit, opline);
+		} else {
+			zend_jit_check_exception(jit);
+		}
 	}
 
 	return 1;
diff --git a/ext/opcache/tests/jit/gh17747.phpt b/ext/opcache/tests/jit/gh17747.phpt
new file mode 100644
index 00000000000..803d2201ec5
--- /dev/null
+++ b/ext/opcache/tests/jit/gh17747.phpt
@@ -0,0 +1,23 @@
+--TEST--
+GH-17747 (Exception on reading property in register-based FETCH_OBJ_R breaks JIT)
+--EXTENSIONS--
+opcache
+--INI--
+opcache.jit=function
+--FILE--
+<?php
+class C {
+    public int $a;
+    public function test() {
+        var_dump($this->a);
+    }
+}
+$test = new C;
+$test->test();
+?>
+--EXPECTF--
+Fatal error: Uncaught Error: Typed property C::$a must not be accessed before initialization in %s:%d
+Stack trace:
+#0 %s(%d): C->test()
+#1 {main}
+  thrown in %s on line %d
diff --git a/ext/zlib/tests/gh17745.phpt b/ext/zlib/tests/gh17745.phpt
new file mode 100644
index 00000000000..64331269dcd
--- /dev/null
+++ b/ext/zlib/tests/gh17745.phpt
@@ -0,0 +1,20 @@
+--TEST--
+GH-17745 (zlib extension incorrectly handles object arguments)
+--EXTENSIONS--
+zlib
+--FILE--
+<?php
+$obj = new stdClass;
+$obj->level = 3;
+var_dump(deflate_init(ZLIB_ENCODING_RAW, $obj));
+
+class Options {
+    public int $level = 3;
+}
+var_dump(deflate_init(ZLIB_ENCODING_RAW, new Options));
+?>
+--EXPECT--
+object(DeflateContext)#2 (0) {
+}
+object(DeflateContext)#3 (0) {
+}
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 3a72bd50634..1ad2cdf0e8c 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -790,6 +790,7 @@ static bool zlib_create_dictionary_string(HashTable *options, char **dict, size_
 	zval *option_buffer;
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("dictionary"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		ZVAL_DEREF(option_buffer);
 		switch (Z_TYPE_P(option_buffer)) {
 			case IS_STRING: {
@@ -871,6 +872,7 @@ PHP_FUNCTION(inflate_init)
 	}
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("window"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		window = zval_get_long(option_buffer);
 	}
 	if (window < 8 || window > 15) {
@@ -1089,6 +1091,7 @@ PHP_FUNCTION(deflate_init)
 	}
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("level"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		level = zval_get_long(option_buffer);
 	}
 	if (level < -1 || level > 9) {
@@ -1097,6 +1100,7 @@ PHP_FUNCTION(deflate_init)
 	}
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("memory"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		memory = zval_get_long(option_buffer);
 	}
 	if (memory < 1 || memory > 9) {
@@ -1105,6 +1109,7 @@ PHP_FUNCTION(deflate_init)
 	}
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("window"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		window = zval_get_long(option_buffer);
 	}
 	if (window < 8 || window > 15) {
@@ -1113,6 +1118,7 @@ PHP_FUNCTION(deflate_init)
 	}
 
 	if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("strategy"))) != NULL) {
+		ZVAL_DEINDIRECT(option_buffer);
 		strategy = zval_get_long(option_buffer);
 	}
 	switch (strategy) {
diff --git a/ext/zlib/zlib.stub.php b/ext/zlib/zlib.stub.php
index 5708d9242d3..06f0f6d3ae8 100644
--- a/ext/zlib/zlib.stub.php
+++ b/ext/zlib/zlib.stub.php
@@ -270,11 +270,11 @@ function gzread($stream, int $length): string|false {}
  */
 function gzgets($stream, ?int $length = null): string|false {}
 
-function deflate_init(int $encoding, array $options = []): DeflateContext|false {}
+function deflate_init(int $encoding, array|object $options = []): DeflateContext|false {}
 
 function deflate_add(DeflateContext $context, string $data, int $flush_mode = ZLIB_SYNC_FLUSH): string|false {}
 
-function inflate_init(int $encoding, array $options = []): InflateContext|false {}
+function inflate_init(int $encoding, array|object $options = []): InflateContext|false {}
 
 function inflate_add(InflateContext $context, string $data, int $flush_mode = ZLIB_SYNC_FLUSH): string|false {}
 
diff --git a/ext/zlib/zlib_arginfo.h b/ext/zlib/zlib_arginfo.h
index de5a5384538..81d779c1b7d 100644
--- a/ext/zlib/zlib_arginfo.h
+++ b/ext/zlib/zlib_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 65271ce06d23b397180a8dbbcecdb0cde5c6942b */
+ * Stub hash: 4c5bea6d9f290c244c7bb27c77fe8007d43a40db */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_ob_gzhandler, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
@@ -106,7 +106,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_deflate_init, 0, 1, DeflateContext, MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, encoding, IS_LONG, 0)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, options, IS_ARRAY, 0, "[]")
+	ZEND_ARG_TYPE_MASK(0, options, MAY_BE_ARRAY|MAY_BE_OBJECT, "[]")
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_deflate_add, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)
@@ -117,7 +117,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_inflate_init, 0, 1, InflateContext, MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, encoding, IS_LONG, 0)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, options, IS_ARRAY, 0, "[]")
+	ZEND_ARG_TYPE_MASK(0, options, MAY_BE_ARRAY|MAY_BE_OBJECT, "[]")
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_inflate_add, 0, 2, MAY_BE_STRING|MAY_BE_FALSE)