Update to QuickJS 2020-11-08

Author: c-smile

TODO

@@ -1,33 +1,48 @@
-Misc:
-- use realpath in module name normalizer and put it in quickjs-libc
-- use custom printf to avoid C library compatibility issues
-- rename CONFIG_ALL_UNICODE, CONFIG_BIGNUM, CONFIG_ATOMICS, CONFIG_CHECK_JSVALUE ?
+Bugs:
+- modules: better error handling with cyclic module references
+
+Misc ideas:
+- use custom printf to avoid compatibility issues with floating point numbers
+- consistent naming for preprocessor defines
 - unify coding style and naming conventions
 - use names from the ECMA spec in library implementation
-- modules: if no ".", use a well known module loading path ?
-- use JSHoistedDef only for global variables (JSHoistedDef.var_name != JS_ATOM_NULL)
-- add index in JSVarDef and is_arg flag to merge args and vars in JSFunctionDef
-- replace most JSVarDef flags with var_type enumeration
 - use byte code emitters with typed arguments (for clarity)
 - use 2 bytecode DynBufs in JSFunctionDef, one for reading, one for writing
   and use the same wrappers in all phases
 - use more generic method for line numbers in resolve_variables and resolve_labels
 - use custom timezone support to avoid C library compatibility issues
 
 Memory:
+- use memory pools for objects, etc?
 - test border cases for max number of atoms, object properties, string length
 - add emergency malloc mode for out of memory exceptions.
 - test all DynBuf memory errors
 - test all js_realloc memory errors
-- bignum: handle memory errors
-- use memory pools for objects, etc?
 - improve JS_ComputeMemoryUsage() with more info
 
-Optimizations:
+Built-in standard library:
+- BSD sockets
+- modules: use realpath in module name normalizer and put it in quickjs-libc
+- modules: if no ".", use a well known module loading path ?
+- get rid of __loadScript, use more common name
+
+REPL:
+- debugger
+- readline: support MS Windows terminal
+- readline: handle dynamic terminal resizing
+- readline: handle double width unicode characters
+- multiline editing
+- runtime object and function inspectors
+- interactive object browser
+- use more generic approach to display evaluation results
+- improve directive handling: dispatch, colorize, completion...
+- save history
+- close all predefined methods in repl.js and jscalc.js
+
+Optimization ideas:
 - 64-bit atoms in 64-bit mode ?
-- use auto-init properties for more global objects
+- 64-bit small bigint in 64-bit mode ?
 - reuse stack slots for disjoint scopes, if strip
-- optimize `for of` iterator for built-in array objects
 - add heuristic to avoid some cycles in closures
 - small String (0-2 charcodes) with immediate storage
 - perform static string concatenation at compile time
@@ -36,43 +51,20 @@ Optimizations:
 - optimize `s += a + b`, `s += a.b` and similar simple expressions
 - ensure string canonical representation and optimise comparisons and hashes?
 - remove JSObject.first_weak_ref, use bit+context based hashed array for weak references
-- optimize function storage with length and name accessors?
 - property access optimization on the global object, functions,
   prototypes and special non extensible objects.
 - create object literals with the correct length by backpatching length argument
 - remove redundant set_loc_uninitialized/check_uninitialized opcodes
 - peephole optim: push_atom_value, to_propkey -> push_atom_value
 - peephole optim: put_loc x, get_loc_check x -> set_loc x
-- comparative performance benchmark
-- use variable name when throwing uninitialized exception if available
 - convert slow array to fast array when all properties != length are numeric
 - optimize destructuring assignments for global and local variables
 - implement some form of tail-call-optimization
 - optimize OP_apply
 - optimize f(...b)
 
-Extensions:
-- support more features in [features] section
-- add built-in preprocessor in compiler, get rid of jscompress
-  handle #if, #ifdef, #line, limited support for #define
-- get rid of __loadScript, use more common name
-- BSD sockets
-
-REPL:
-- debugger
-- readline: support MS Windows terminal
-- readline: handle dynamic terminal resizing
-- readline: handle double width unicode characters
-- multiline editing
-- runtime object and function inspectors
-- interactive object browser
-- use more generic approach to display evaluation results
-- improve directive handling: dispatch, colorize, completion...
-- save history
-- close all predefined methods in repl.js and jscalc.js
-
 Test262o:   0/11262 errors, 463 excluded
 Test262o commit: 7da91bceb9ce7613f87db47ddd1292a2dda58b42 (es5-tests branch)
 
-Test262: 30/71748 errors, 868 excluded, 474 skipped
-Test262 commit: 24c67328062383079ada85f4d253eb0526fd209b
+Result: 51/75119 errors, 899 excluded, 570 skipped
+Test262 commit: 1c33fdb0ca60fb9d7392403be769ed0d26209132

VERSION

@@ -1 +1 @@
-2020-09-06
+2020-11-08

cutils.c

@@ -321,7 +321,7 @@ int unicode_from_utf8(const uint8_t *p, int max_len, const uint8_t **pp)
             return -1;
         c = (c << 6) | (b & 0x3f);
     }
-    if (c < (int)utf8_min_code[l - 1])
+    if (c < utf8_min_code[l - 1])
         return -1;
     *pp = p;
     return c;

doc/quickjs.html

@@ -452,6 +452,16 @@ useful in case of specific memory constraints or for testing.
 Return the value of the environment variable @code{name} or
 @code{undefined} if it is not defined.
 
+@item setenv(name, value)
+Set the value of the environment variable @code{name} to the string
+@code{value}.
+
+@item unsetenv(name)
+Delete the environment variable @code{name}.
+
+@item getenviron()
+Return an object containing the environment variables as key-value pairs.
+
 @item urlGet(url, options = undefined)
 
 Download @code{url} using the @file{curl} command line
@@ -532,7 +542,7 @@ position @code{position} (wrapper to the libc @code{fread}).
 
 @item write(buffer, position, length)
 Write @code{length} bytes to the file from the ArrayBuffer @code{buffer} at byte
-position @code{position} (wrapper to the libc @code{fread}).
+position @code{position} (wrapper to the libc @code{fwrite}).
 
 @item getline()
 Return the next line from the file, assuming UTF-8 encoding, excluding