From e2cd110c0ae4aa8c858569be2cee46008e609a20 Mon Sep 17 00:00:00 2001 From: bcoe Date: Sat, 18 Jan 2020 17:51:49 -0800 Subject: [PATCH] deps: V8: cherry-pick 0dfd9ea51241 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Original commit message: [coverage] Fix coverage with default arguments In the presence of default arguments, the body of the function gets wrapped into another block. This caused our trailing-range-after-return optimization to not apply, because the wrapper block had no source range assigned. This CL correctly assignes a source range to that block, which allows already present code to handle it correctly. Note that this is not a real coverage bug; we've just been reporting whitespace as uncovered. We're fixing it for consistency. Originally reported on github.com/bcoe/c8/issues/66 Bug: v8:9952 Change-Id: Iab3905f558eb99126e0dad8072d03d0a312fdcd3 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1903430 Commit-Queue: Sigurd Schneider Reviewed-by: Toon Verwaest Reviewed-by: Jakob Gruber Cr-Commit-Position: refs/heads/master@{#64836} Refs: https://github.com/v8/v8/commit/0dfd9ea51241bebf724f2eb8d6d0158a014f866a Backport-PR-URL: https://github.com/nodejs/node/pull/31412 PR-URL: https://github.com/nodejs/node/pull/30713 Reviewed-By: Michaël Zasso Reviewed-By: Colin Ihrig Reviewed-By: Jiawen Geng Reviewed-By: Rich Trott --- common.gypi | 2 +- deps/v8/src/parsing/parser-base.h | 1 + deps/v8/test/mjsunit/code-coverage-block.js | 37 +++++++++++++++++++++ 3 files changed, 39 insertions(+), 1 deletion(-) diff --git a/common.gypi b/common.gypi index 2b61a19a29cad0..8c9076b7352d81 100644 --- a/common.gypi +++ b/common.gypi @@ -38,7 +38,7 @@ # Reset this number to 0 on major V8 upgrades. # Increment by one for each non-official patch applied to deps/v8. - 'v8_embedder_string': '-node.30', + 'v8_embedder_string': '-node.31', ##### V8 defaults for Node.js ##### diff --git a/deps/v8/src/parsing/parser-base.h b/deps/v8/src/parsing/parser-base.h index 1b3bd64cddf25a..ec3e3d7866cdb6 100644 --- a/deps/v8/src/parsing/parser-base.h +++ b/deps/v8/src/parsing/parser-base.h @@ -4087,6 +4087,7 @@ void ParserBase::ParseFunctionBody( inner_body.Rewind(); inner_body.Add(inner_block); inner_block->set_scope(inner_scope); + impl()->RecordBlockSourceRange(inner_block, scope()->end_position()); if (!impl()->HasCheckedSyntax()) { const AstRawString* conflict = inner_scope->FindVariableDeclaredIn( function_scope, VariableMode::kLastLexicalVariableMode); diff --git a/deps/v8/test/mjsunit/code-coverage-block.js b/deps/v8/test/mjsunit/code-coverage-block.js index a7bad5bf11fbc4..458796493b705c 100644 --- a/deps/v8/test/mjsunit/code-coverage-block.js +++ b/deps/v8/test/mjsunit/code-coverage-block.js @@ -1097,4 +1097,41 @@ f(43); // 0450 {"start":204,"end":226,"count":1}] ); +TestCoverage( +"https://crbug.com/v8/9857", +`function foo() {function bar() {}}; foo()`, +[{"start":0,"end":41,"count":1}, + {"start":0,"end":34,"count":1}, + {"start":16,"end":33,"count":0}] +); + +TestCoverage( +"https://crbug.com/v8/9952", +` +function test(foo = "foodef") { // 0000 + return {bar}; // 0050 + // 0100 + function bar() { // 0150 + console.log("test"); // 0200 + } // 0250 +} // 0300 +test().bar(); // 0350`, +[{"start":0,"end":399,"count":1}, + {"start":0,"end":301,"count":1}, + {"start":152,"end":253,"count":1}]); + +TestCoverage( +"https://crbug.com/v8/9952", +` +function test(foo = (()=>{})) { // 0000 + return {foo}; // 0050 +} // 0100 + // 0150 +test(()=>{}).foo(); // 0200`, +[{"start":0,"end":249,"count":1}, + {"start":0,"end":101,"count":1}, + {"start":21,"end":27,"count":0}, + {"start":205,"end":211,"count":1}] +); + %DebugToggleBlockCoverage(false);