Fix member accesses for non-decimal numeric literals (#377)

* Fix member accesses for non-decimal numeric literals
    e.g. 0x0.a should return undefined, not SyntaxError.
* Remove ineffective non-decimal float parsing code and redundant checks on `is_float && radix != 10`
    (The code already wasn't doing anything because of the `is_float` check.)

Author: bptato

quickjs.c

@@ -10264,7 +10264,7 @@ static JSValue js_atof2(JSContext *ctx, const char *str, const char **pp,
                 to_digit((uint8_t)p[1]) < radix)) {
         p++;
     }
-    if (!(flags & ATOD_INT_ONLY)) {
+    if (!(flags & ATOD_INT_ONLY) && radix == 10) {
         if (*p == '.' && (p > p_start || to_digit((uint8_t)p[1]) < radix)) {
             is_float = TRUE;
             p++;
@@ -10274,9 +10274,7 @@ static JSValue js_atof2(JSContext *ctx, const char *str, const char **pp,
                    (*p == sep && to_digit((uint8_t)p[1]) < radix))
                 p++;
         }
-        if (p > p_start &&
-            (((*p == 'e' || *p == 'E') && radix == 10) ||
-             ((*p == 'p' || *p == 'P') && (radix == 2 || radix == 8 || radix == 16)))) {
+        if (p > p_start && (*p == 'e' || *p == 'E')) {
             const char *p1 = p + 1;
             is_float = TRUE;
             if (*p1 == '+') {
@@ -10317,11 +10315,7 @@ static JSValue js_atof2(JSContext *ctx, const char *str, const char **pp,
         if (*p == 'n') {
             p++;
             atod_type = ATOD_TYPE_BIG_INT;
-        } else if (is_float && radix != 10) {
-            goto fail;
         }
-    } else if ((atod_type == ATOD_TYPE_FLOAT64) && is_float && radix != 10) {
-        goto fail;
     }
 
     switch(atod_type) {

tests/test_language.js

@@ -593,6 +593,16 @@ function test_reserved_names()
     test_name('static', SyntaxError);
 }
 
+function test_number_literals()
+{
+    assert(0.1.a, undefined);
+    assert(0x1.a, undefined);
+    assert(0b1.a, undefined);
+    assert(01.a, undefined);
+    assert(0o1.a, undefined);
+    test_expr('0.a', SyntaxError);
+}
+
 test_op1();
 test_cvt();
 test_eq();
@@ -613,3 +623,4 @@ test_function_length();
 test_argument_scope();
 test_function_expr_name();
 test_reserved_names();
+test_number_literals();