diff --git a/.gitignore b/.gitignore
index 7e0bac32..4ad835cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ cmake-*
 out/
 CMakeUserPresets.json
 fuzz
+.vscode/
\ No newline at end of file
diff --git a/cutils.c b/cutils.c
index b17756b6..9f202e52 100644
--- a/cutils.c
+++ b/cutils.c
@@ -41,7 +41,7 @@
 #pragma GCC visibility push(default)
 #endif
 
-void pstrcpy(char *buf, int buf_size, const char *str)
+void js__pstrcpy(char *buf, int buf_size, const char *str)
 {
     int c;
     char *q = buf;
@@ -59,16 +59,16 @@ void pstrcpy(char *buf, int buf_size, const char *str)
 }
 
 /* strcat and truncate. */
-char *pstrcat(char *buf, int buf_size, const char *s)
+char *js__pstrcat(char *buf, int buf_size, const char *s)
 {
     int len;
     len = strlen(buf);
     if (len < buf_size)
-        pstrcpy(buf + len, buf_size - len, s);
+        js__pstrcpy(buf + len, buf_size - len, s);
     return buf;
 }
 
-int strstart(const char *str, const char *val, const char **ptr)
+int js__strstart(const char *str, const char *val, const char **ptr)
 {
     const char *p, *q;
     p = str;
@@ -84,7 +84,7 @@ int strstart(const char *str, const char *val, const char **ptr)
     return 1;
 }
 
-int has_suffix(const char *str, const char *suffix)
+int js__has_suffix(const char *str, const char *suffix)
 {
     size_t len = strlen(str);
     size_t slen = strlen(suffix);
diff --git a/cutils.h b/cutils.h
index 1e96ed68..4ad3f642 100644
--- a/cutils.h
+++ b/cutils.h
@@ -133,10 +133,10 @@ enum {
 };
 #endif
 
-void pstrcpy(char *buf, int buf_size, const char *str);
-char *pstrcat(char *buf, int buf_size, const char *s);
-int strstart(const char *str, const char *val, const char **ptr);
-int has_suffix(const char *str, const char *suffix);
+void js__pstrcpy(char *buf, int buf_size, const char *str);
+char *js__pstrcat(char *buf, int buf_size, const char *s);
+int js__strstart(const char *str, const char *val, const char **ptr);
+int js__has_suffix(const char *str, const char *suffix);
 
 static inline uint8_t is_be(void) {
     union {
diff --git a/libregexp.c b/libregexp.c
index 799c8f64..b4b0e0cd 100644
--- a/libregexp.c
+++ b/libregexp.c
@@ -1821,7 +1821,7 @@ uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,
     error:
         dbuf_free(&s->byte_code);
         dbuf_free(&s->group_names);
-        pstrcpy(error_msg, error_msg_size, s->u.error_msg);
+        js__pstrcpy(error_msg, error_msg_size, s->u.error_msg);
         *plen = 0;
         return NULL;
     }
diff --git a/qjs.c b/qjs.c
index ba5fd8f5..8671ffbc 100644
--- a/qjs.c
+++ b/qjs.c
@@ -146,7 +146,7 @@ static int eval_file(JSContext *ctx, const char *filename, int module)
     }
 
     if (module < 0) {
-        module = (has_suffix(filename, ".mjs") ||
+        module = (js__has_suffix(filename, ".mjs") ||
                   JS_DetectModule((const char *)buf, buf_len));
     }
     if (module)
diff --git a/qjsc.c b/qjsc.c
index 5e2e8aee..52216cb0 100644
--- a/qjsc.c
+++ b/qjsc.c
@@ -126,7 +126,7 @@ static void get_c_name(char *buf, size_t buf_size, const char *file)
         len = strlen(p);
     else
         len = r - p;
-    pstrcpy(buf, buf_size, c_ident_prefix);
+    js__pstrcpy(buf, buf_size, c_ident_prefix);
     q = buf + strlen(buf);
     for(i = 0; i < len; i++) {
         c = p[i];
@@ -218,7 +218,7 @@ static void find_unique_cname(char *cname, size_t cname_size)
             break;
         suffix_num++;
     }
-    pstrcpy(cname, cname_size, cname1);
+    js__pstrcpy(cname, cname_size, cname1);
 }
 
 JSModuleDef *jsc_module_loader(JSContext *ctx,
@@ -234,7 +234,7 @@ JSModuleDef *jsc_module_loader(JSContext *ctx,
         namelist_add(&init_module_list, e->name, e->short_name, 0);
         /* create a dummy module */
         m = JS_NewCModule(ctx, module_name, js_module_dummy_init);
-    } else if (has_suffix(module_name, ".so")) {
+    } else if (js__has_suffix(module_name, ".so")) {
         JS_ThrowReferenceError(ctx, "%s: dynamically linking to shared libraries not supported",
         module_name);
         return NULL;
@@ -289,7 +289,7 @@ static void compile_file(JSContext *ctx, FILE *fo,
     }
     eval_flags = JS_EVAL_FLAG_COMPILE_ONLY;
     if (module < 0) {
-        module = (has_suffix(filename, ".mjs") ||
+        module = (js__has_suffix(filename, ".mjs") ||
                   JS_DetectModule((const char *)buf, buf_len));
     }
     if (module)
@@ -303,7 +303,7 @@ static void compile_file(JSContext *ctx, FILE *fo,
     }
     js_free(ctx, buf);
     if (c_name1) {
-        pstrcpy(c_name, sizeof(c_name), c_name1);
+        js__pstrcpy(c_name, sizeof(c_name), c_name1);
     } else {
         get_c_name(c_name, sizeof(c_name), filename);
     }
@@ -422,11 +422,11 @@ int main(int argc, char **argv)
                 char *p;
                 char path[1024];
                 char cname[1024];
-                pstrcpy(path, sizeof(path), optarg);
+                js__pstrcpy(path, sizeof(path), optarg);
                 p = strchr(path, ',');
                 if (p) {
                     *p = '\0';
-                    pstrcpy(cname, sizeof(cname), p + 1);
+                    js__pstrcpy(cname, sizeof(cname), p + 1);
                 } else {
                     get_c_name(cname, sizeof(cname), path);
                 }
@@ -459,7 +459,7 @@ int main(int argc, char **argv)
     if (!out_filename)
         out_filename = "out.c";
 
-    pstrcpy(cfilename, sizeof(cfilename), out_filename);
+    js__pstrcpy(cfilename, sizeof(cfilename), out_filename);
 
     if (output_type == OUTPUT_RAW)
         fo = fopen(cfilename, "wb");
diff --git a/quickjs-libc.c b/quickjs-libc.c
index 1567dbcf..24e7a843 100644
--- a/quickjs-libc.c
+++ b/quickjs-libc.c
@@ -672,10 +672,10 @@ int js_module_set_import_meta(JSContext *ctx, JSValue func_val,
         } else
 #endif
         {
-            pstrcat(buf, sizeof(buf), module_name);
+            js__pstrcat(buf, sizeof(buf), module_name);
         }
     } else {
-        pstrcpy(buf, sizeof(buf), module_name);
+        js__pstrcpy(buf, sizeof(buf), module_name);
     }
     JS_FreeCString(ctx, module_name);
 
@@ -697,7 +697,7 @@ JSModuleDef *js_module_loader(JSContext *ctx,
 {
     JSModuleDef *m;
 
-    if (has_suffix(module_name, QJS_NATIVE_MODULE_SUFFIX)) {
+    if (js__has_suffix(module_name, QJS_NATIVE_MODULE_SUFFIX)) {
         m = js_module_loader_so(ctx, module_name);
     } else {
         size_t buf_len;
diff --git a/quickjs.c b/quickjs.c
index 29beb4b2..cc630ab9 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -10497,7 +10497,7 @@ static JSValue js_atof(JSContext *ctx, const char *p, size_t len,
             }
         }
     } else {
-        if (*p == 'I' && (flags & ATOD_ACCEPT_INFINITY) && strstart(p, "Infinity", &p)) {
+        if (*p == 'I' && (flags & ATOD_ACCEPT_INFINITY) && js__strstart(p, "Infinity", &p)) {
             d = INF;
             if (sign == '-')
                 d = -d;
@@ -26496,8 +26496,8 @@ static char *js_default_module_normalize_name(JSContext *ctx,
         }
     }
     if (filename[0] != '\0')
-        pstrcat(filename, cap, "/");
-    pstrcat(filename, cap, r);
+        js__pstrcat(filename, cap, "/");
+    js__pstrcat(filename, cap, r);
     //    printf("normalize: %s %s -> %s\n", base_name, name, filename);
     return filename;
 }
diff --git a/run-test262.c b/run-test262.c
index 66ab8980..1b629e79 100644
--- a/run-test262.c
+++ b/run-test262.c
@@ -398,7 +398,7 @@ void namelist_free(namelist_t *lp)
 static int add_test_file(const char *filename)
 {
     namelist_t *lp = &test_list;
-    if (has_suffix(filename, ".js") && !has_suffix(filename, "_FIXTURE.js"))
+    if (js__has_suffix(filename, ".js") && !js__has_suffix(filename, "_FIXTURE.js"))
         namelist_add(lp, NULL, filename);
     return 0;
 }
@@ -472,7 +472,7 @@ static JSValue js_print_262(JSContext *ctx, JSValue this_val,
             return JS_EXCEPTION;
         if (!strcmp(str, "Test262:AsyncTestComplete")) {
             tls->async_done++;
-        } else if (strstart(str, "Test262:AsyncTestFailure", NULL)) {
+        } else if (js__strstart(str, "Test262:AsyncTestFailure", NULL)) {
             tls->async_done = 2; /* force an error */
         }
         if (outfile) {
@@ -1062,7 +1062,7 @@ void update_exclude_dirs(void)
     /* split directpries from exclude_list */
     for (count = i = 0; i < ep->count; i++) {
         name = ep->array[i];
-        if (has_suffix(name, "/")) {
+        if (js__has_suffix(name, "/")) {
             namelist_add(dp, NULL, name);
             free(name);
         } else {
@@ -1265,7 +1265,7 @@ char *find_error(const char *filename, int *pline, int is_strict)
                     q++;
                 }
                 /* check strict mode indicator */
-                if (!strstart(q, "strict mode: ", &q) != !is_strict)
+                if (!js__strstart(q, "strict mode: ", &q) != !is_strict)
                     continue;
                 r = q = skip_prefix(q, "unexpected error: ");
                 r += strcspn(r, "\n");
@@ -1486,7 +1486,7 @@ static int eval_buf(JSContext *ctx, const char *buf, size_t buf_len,
             if (ret == 0) {
                 if (msg && s &&
                     (str_equal(s, "expected error") ||
-                     strstart(s, "unexpected error type:", NULL) ||
+                     js__strstart(s, "unexpected error type:", NULL) ||
                      str_equal(s, msg))) {     // did not have error yet
                     if (!has_error_line) {
                         longest_match(buf, msg, pos, &pos, pos_line, &error_line);