introduce awaits

[alexlamsl]

No description provided.

[alexlamsl]

@kzc okay this is officially puzzling:

$ node -v
v0.12.18
$ node test/compress

$

Some of the time it does this:

$ node test/compress


#
# Fatal error in ..\..\src\heap\incremental-marking.cc, line 681
# CHECK((0) < (delta)) failed
#

Now, if I do this:

--- a/tools/node.js
+++ b/tools/node.js
@@ -17,6 +17,7 @@ exports.FILES = [

 new Function("exports", function() {
     var code = exports.FILES.map(function(file) {
+console.error('READING', file);
         return fs.readFileSync(file, "utf8");
     });
     code.push("exports.describe_ast = " + describe_ast.toString());

Then it magically works 🤨

[alexlamsl]

$ node --no-incremental-marking test/compress
C:\UglifyJS\test\node.js:3
new Function("exports", require("../tools/node").FILES.map(function(file) {
                                                       ^
TypeError: undefined is not a function
    at Object.<anonymous>

$ node --gc-global test/compress

!!! Failed 363998478901 test case(s).
!!! arguments.js, arrays.js, arrows.js, asm.js, assignments.js, async.js, blocks.js, booleans.js, collapse_vars.js, comparisons.js, concat-strings.js, conditionals.js, const.js, dead-code.js, debugger.js, default-values.js, destructured.js, directives.js, drop-console.js, drop-unused.js, evaluate.js, functions.js, global_defs.js, hoist_props.js, hoist_vars.js, html_comments.js, ie8.js, if_return.js, issue-1034.js, issue-1041.js, issue-1052.js, issue-1105.js, issue-12.js, issue-1202.js, issue-126.js, issue-1261.js, issue-1275.js, issue-1321.js, issue-143.js, issue-1431.js, issue-1443.js, issue-1446.js, issue-1447.js, issue-1569.js, issue-1588.js, issue-1609.js, issue-1639.js, issue-1656.js, issue-1673.js, issue-1704.js, issue-1733.js, issue-1750.js, issue-1770.js, issue-1787.js, issue-1833.js, issue-1943.js, issue-208.js, issue-22.js, issue-2652.js, issue-267.js, issue-269.js, issue-2719.js, issue-281.js, issue-2871.js, issue-2989.js, issue-368.js, issue-3768.js, issue-44.js, issue-59.js, issue-597.js, issue-611.js, issue-637.js, issue-640.js, issue-747.js, issue-751.js, issue-782.js, issue-892.js, issue-913.js, issue-973.js, issue-976.js, issue-979.js, join_vars.js, keep_fargs.js, labels.js, let.js, loops.js, max_line_len.js, merge_vars.js, negate-iife.js, new.js, node_version.js, numbers.js, objects.js, preserve_line.js, properties.js, pure_funcs.js, pure_getters.js, reduce_vars.js, regexp.js, rename.js, return_undefined.js, sandbox.js, sequences.js, side_effects.js, spread.js, string-literal.js, switch.js, transform.js, typeof.js, unicode.js, varify.js, webkit.js, wrap_iife.js

[kzc]

I'm afraid I don't have any ideas except checking what changed in testing since v0.12.18 worked.

[alexlamsl]

The sequence of file sizes onto fs.readFileSync() that triggers some sort of buffer overflow and corrupts the v8 heap. Changing the pattern of heap allocation seems to work around it.