diff --git a/ext/opcache/jit/zend_jit_ir.c b/ext/opcache/jit/zend_jit_ir.c
index 4767b55cb9547..5fe33cb07ef84 100644
--- a/ext/opcache/jit/zend_jit_ir.c
+++ b/ext/opcache/jit/zend_jit_ir.c
@@ -3237,6 +3237,20 @@ static void zend_jit_setup(void)
 		/* Index is offset by 1 on FreeBSD (https://github.com/freebsd/freebsd-src/blob/22ca6db50f4e6bd75a141f57cf953d8de6531a06/lib/libc/gen/tls.c#L88) */
 		tsrm_tls_index = (tlsdesc->index + 1) * 8;
 	}
+# elif defined(__MUSL__)
+	if (tsrm_ls_cache_tcb_offset == 0) {
+		size_t **where;
+
+		__asm__(
+			"adrp %0, :tlsdesc:_tsrm_ls_cache\n"
+			"add %0, %0, :tlsdesc_lo12:_tsrm_ls_cache\n"
+			: "=r" (where));
+		/* See https://github.com/ARM-software/abi-aa/blob/2a70c42d62e9c3eb5887fa50b71257f20daca6f9/aaelf64/aaelf64.rst */
+		size_t *tlsdesc = where[1];
+
+		tsrm_tls_offset = tlsdesc[1];
+		tsrm_tls_index = tlsdesc[0] * 8;
+	}
 # else
 	ZEND_ASSERT(tsrm_ls_cache_tcb_offset != 0);
 # endif
diff --git a/ext/pdo_pgsql/pgsql_driver.c b/ext/pdo_pgsql/pgsql_driver.c
index f29b4ca973cc6..c7944373fa7c7 100644
--- a/ext/pdo_pgsql/pgsql_driver.c
+++ b/ext/pdo_pgsql/pgsql_driver.c
@@ -295,7 +295,7 @@ static bool pgsql_handle_preparer(pdo_dbh_t *dbh, zend_string *sql, pdo_stmt_t *
 			execute_only = 1;
 		}
 	} else {
-		emulate = H->disable_native_prepares || H->emulate_prepares;
+		emulate = H->emulate_prepares;
 		execute_only = H->disable_prepares;
 	}
 
diff --git a/ext/pdo_pgsql/php_pdo_pgsql_int.h b/ext/pdo_pgsql/php_pdo_pgsql_int.h
index da77d01c61ec7..7dee249cbb110 100644
--- a/ext/pdo_pgsql/php_pdo_pgsql_int.h
+++ b/ext/pdo_pgsql/php_pdo_pgsql_int.h
@@ -44,10 +44,7 @@ typedef struct {
 	pdo_pgsql_error_info	einfo;
 	Oid 		pgoid;
 	unsigned int	stmt_counter;
-	/* The following two variables have the same purpose. Unfortunately we need
-	   to keep track of two different attributes having the same effect. */
 	bool		emulate_prepares;
-	bool		disable_native_prepares; /* deprecated since 5.6 */
 	bool		disable_prepares;
 	HashTable       *lob_streams;
 	zend_fcall_info_cache *notice_callback;
diff --git a/ext/standard/tests/streams/bug51056.phpt b/ext/standard/tests/streams/bug51056.phpt
index abb87fcb037c8..e011405298c24 100644
--- a/ext/standard/tests/streams/bug51056.phpt
+++ b/ext/standard/tests/streams/bug51056.phpt
@@ -4,7 +4,7 @@ Bug #51056 (fread() on blocking stream will block even if data is available)
 <?php
 
 $serverCode = <<<'CODE'
-$server = stream_socket_server('tcp://127.0.0.1:64324');
+$server = stream_socket_server('tcp://127.0.0.1:64327');
 phpt_notify();
 
 $conn = stream_socket_accept($server);
@@ -23,7 +23,7 @@ $clientCode = <<<'CODE'
 
 phpt_wait();
 
-$fp = fsockopen("tcp://127.0.0.1:64324");
+$fp = fsockopen("tcp://127.0.0.1:64327");
 
 while (!feof($fp)) {
     $data = fread($fp, 256);
diff --git a/ext/zend_test/test.c b/ext/zend_test/test.c
index c41d08a1be633..8238af8cb2320 100644
--- a/ext/zend_test/test.c
+++ b/ext/zend_test/test.c
@@ -1108,9 +1108,12 @@ static ZEND_METHOD(_ZendTestMagicCallForward, __call)
 
 	ZEND_IGNORE_VALUE(arguments);
 
-	zval func;
+	zval func, rv;
 	ZVAL_STR(&func, name);
-	call_user_function(NULL, NULL, &func, return_value, 0, NULL);
+	call_user_function(NULL, NULL, &func, &rv, 0, NULL);
+
+	ZVAL_COPY_DEREF(return_value, &rv);
+	zval_ptr_dtor(&rv);
 }
 
 PHP_INI_BEGIN()
diff --git a/ext/zend_test/tests/gh16908.phpt b/ext/zend_test/tests/gh16908.phpt
new file mode 100644
index 0000000000000..becb2775c7efa
--- /dev/null
+++ b/ext/zend_test/tests/gh16908.phpt
@@ -0,0 +1,18 @@
+--TEST--
+GH-16908 (_ZendTestMagicCallForward does not handle references well)
+--EXTENSIONS--
+zend_test
+--FILE--
+<?php
+$cls = new _ZendTestMagicCallForward();
+function &foo() {
+}
+$cls->foo()->x ??= 42;
+?>
+--EXPECTF--
+Notice: Only variable references should be returned by reference in %s on line %d
+
+Fatal error: Uncaught Error: Attempt to assign property "x" on null in %s:%d
+Stack trace:
+#0 {main}
+  thrown in %s on line %d
diff --git a/main/main.c b/main/main.c
index 0f422fd3978f1..eabd0e998736c 100644
--- a/main/main.c
+++ b/main/main.c
@@ -2120,8 +2120,9 @@ zend_result php_module_startup(sapi_module_struct *sf, zend_module_entry *additi
 		_set_invalid_parameter_handler(old_invalid_parameter_handler);
 	}
 
-	/* Disable the message box for assertions.*/
+	/* Disable the message box for assertions and errors.*/
 	_CrtSetReportMode(_CRT_ASSERT, 0);
+	_CrtSetReportMode(_CRT_ERROR, 0);
 #endif
 
 #ifdef ZTS
diff --git a/run-tests.php b/run-tests.php
index 258eae1fb2da9..2c6db0d7e2df0 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -26,7 +26,7 @@
 /* Let there be no top-level code beyond this point:
  * Only functions and classes, thanks!
  *
- * Minimum required PHP version: 7.4.0
+ * Minimum required PHP version: 8.0.0
  */
 
 function show_usage(): void