diff --git a/libregexp.c b/libregexp.c
index a26b74c..99cb04f 100644
--- a/libregexp.c
+++ b/libregexp.c
@@ -2064,7 +2064,7 @@ typedef struct REExecState {
     size_t count; /* only used for RE_EXEC_STATE_GREEDY_QUANT */
     const uint8_t *cptr;
     const uint8_t *pc;
-    void *buf[0];
+    void *buf[];
 } REExecState;
 
 typedef struct {
diff --git a/quickjs-libc.c b/quickjs-libc.c
index a594d74..140e6c3 100644
--- a/quickjs-libc.c
+++ b/quickjs-libc.c
@@ -3231,7 +3231,7 @@ typedef struct {
 
 typedef struct {
     int ref_count;
-    uint64_t buf[0];
+    uint64_t buf[];
 } JSSABHeader;
 
 static JSClassID js_worker_class_id;
diff --git a/quickjs.c b/quickjs.c
index 978ade3..bdab68e 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -474,8 +474,8 @@ struct JSString {
     struct list_head link; /* string list */
 #endif
     union {
-        uint8_t str8[0]; /* 8 bit strings will get an extra null terminator */
-        uint16_t str16[0];
+        __extension__ uint8_t str8[0]; /* 8 bit strings will get an extra null terminator */
+        __extension__ uint16_t str16[0];
     } u;
 };
 
@@ -664,7 +664,7 @@ typedef struct JSBoundFunction {
     JSValue func_obj;
     JSValue this_val;
     int argc;
-    JSValue argv[0];
+    JSValue argv[];
 } JSBoundFunction;
 
 typedef enum JSIteratorKindEnum {
@@ -822,7 +822,7 @@ typedef struct JSJobEntry {
     JSContext *ctx;
     JSJobFunc *job_func;
     int argc;
-    JSValue argv[0];
+    JSValue argv[];
 } JSJobEntry;
 
 typedef struct JSProperty {
@@ -871,7 +871,7 @@ struct JSShape {
     int deleted_prop_count;
     JSShape *shape_hash_next; /* in JSRuntime.shape_hash[h] list */
     JSObject *proto;
-    JSShapeProperty prop[0]; /* prop_size elements */
+    JSShapeProperty prop[]; /* prop_size elements */
 };
 
 struct JSObject {
@@ -5015,7 +5015,7 @@ typedef struct JSCFunctionDataRecord {
     uint8_t length;
     uint8_t data_len;
     uint16_t magic;
-    JSValue data[0];
+    JSValue data[];
 } JSCFunctionDataRecord;
 
 static void js_c_function_data_finalizer(JSRuntime *rt, JSValue val)
@@ -27371,7 +27371,7 @@ static int js_inner_module_evaluation(JSContext *ctx, JSModuleDef *m,
         JSReqModuleEntry *rme = &m->req_module_entries[i];
         m1 = rme->module;
         index = js_inner_module_evaluation(ctx, m1, index, pstack_top, pvalue);
-        if (index < 0) 
+        if (index < 0)
             return -1;
         assert(m1->status == JS_MODULE_STATUS_EVALUATING ||
                m1->status == JS_MODULE_STATUS_EVALUATING_ASYNC ||