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deps: V8: cherry-pick b9d33036e9a8
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Original commit message:

    [coverage] Improve whitespace precision of coverage reporting

    This CL improves whitespace precision of coverage around try blocks;
    previously a small portion of whitespace could be reported as uncovered
    between try blocks and catch and/or finally blocks.

    Change-Id: I763ae3d15106c88f2278cf8893c12b0869a62528
    Fixed: v8:10030
    Bug: v8:10030
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1962265
    Reviewed-by: Toon Verwaest <verwaest@chromium.org>
    Reviewed-by: Jakob Gruber <jgruber@chromium.org>
    Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#65593}

Refs: v8/v8@b9d3303

PR-URL: #31335
Refs: #25937
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Rich Trott <rtrott@gmail.com>
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@bcoe
bcoe committed Jan 15, 2020
1 parent 216e423 commit dcbf9da
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Showing 4 changed files with 88 additions and 15 deletions.
2 changes: 1 addition & 1 deletion common.gypi
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@

# 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.27',
'v8_embedder_string': '-node.28',

##### V8 defaults for Node.js #####

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7 changes: 7 additions & 0 deletions deps/v8/src/ast/source-range-ast-visitor.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -41,9 +41,16 @@ void SourceRangeAstVisitor::VisitFunctionLiteral(FunctionLiteral* expr) {

void SourceRangeAstVisitor::VisitTryCatchStatement(TryCatchStatement* stmt) {
AstTraversalVisitor::VisitTryCatchStatement(stmt);
MaybeRemoveContinuationRange(stmt->try_block());
MaybeRemoveContinuationRangeOfAsyncReturn(stmt);
}

void SourceRangeAstVisitor::VisitTryFinallyStatement(
TryFinallyStatement* stmt) {
AstTraversalVisitor::VisitTryFinallyStatement(stmt);
MaybeRemoveContinuationRange(stmt->try_block());
}

bool SourceRangeAstVisitor::VisitNode(AstNode* node) {
AstNodeSourceRanges* range = source_range_map_->Find(node);

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1 change: 1 addition & 0 deletions deps/v8/src/ast/source-range-ast-visitor.h
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ class SourceRangeAstVisitor final
void VisitFunctionLiteral(FunctionLiteral* expr);
bool VisitNode(AstNode* node);
void VisitTryCatchStatement(TryCatchStatement* stmt);
void VisitTryFinallyStatement(TryFinallyStatement* stmt);

void MaybeRemoveContinuationRange(Statement* last_statement);
void MaybeRemoveLastContinuationRange(ZonePtrList<Statement>* stmts);
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93 changes: 79 additions & 14 deletions deps/v8/test/mjsunit/code-coverage-block.js
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Original file line number Diff line number Diff line change
Expand Up @@ -337,11 +337,7 @@ TestCoverage(
[{"start":0,"end":849,"count":1},
{"start":1,"end":801,"count":1},
{"start":67,"end":87,"count":0},
{"start":221,"end":222,"count":0},
{"start":254,"end":274,"count":0},
{"start":371,"end":372,"count":0},
{"start":403,"end":404,"count":0},
{"start":553,"end":554,"count":0}]
{"start":254,"end":274,"count":0}]
);

TestCoverage("try/catch/finally statements with early return",
Expand All @@ -358,10 +354,8 @@ TestCoverage("try/catch/finally statements with early return",
`,
[{"start":0,"end":449,"count":1},
{"start":1,"end":151,"count":1},
{"start":69,"end":70,"count":0},
{"start":91,"end":150,"count":0},
{"start":201,"end":401,"count":1},
{"start":269,"end":270,"count":0},
{"start":321,"end":400,"count":0}]
);

Expand Down Expand Up @@ -393,15 +387,13 @@ TestCoverage(
`,
[{"start":0,"end":1099,"count":1},
{"start":1,"end":151,"count":1},
{"start":69,"end":70,"count":0},
{"start":91,"end":150,"count":0},
{"start":201,"end":351,"count":1},
{"start":286,"end":350,"count":0},
{"start":401,"end":701,"count":1},
{"start":603,"end":700,"count":0},
{"start":561,"end":568,"count":0},
{"start":751,"end":1051,"count":1},
{"start":819,"end":820,"count":0},
{"start":861,"end":1050,"count":0}]
);

Expand Down Expand Up @@ -561,7 +553,6 @@ try { // 0200
} catch (e) {} // 0450
`,
[{"start":0,"end":499,"count":1},
{"start":451,"end":452,"count":0},
{"start":12,"end":101,"count":1},
{"start":60,"end":100,"count":0},
{"start":264,"end":353,"count":1},
Expand Down Expand Up @@ -636,7 +627,6 @@ try { // 0200
} catch (e) {} // 0450
`,
[{"start":0,"end":499,"count":1},
{"start":451,"end":452,"count":0},
{"start":12,"end":101,"count":1},
{"start":65,"end":100,"count":0},
{"start":264,"end":353,"count":1},
Expand Down Expand Up @@ -1017,7 +1007,6 @@ try { // 0500
} catch (err) {} // 0600
`,
[{"start":0,"end":649,"count":1},
{"start":351,"end":352,"count":0},
{"start":602,"end":616,"count":0},
{"start":0,"end":201,"count":2},
{"start":69,"end":153,"count":1}]
Expand Down Expand Up @@ -1093,7 +1082,8 @@ function test(foo = "foodef") { // 0000
console.log("test"); // 0200
} // 0250
} // 0300
test().bar(); // 0350`,
test().bar(); // 0350
`,
[{"start":0,"end":399,"count":1},
{"start":0,"end":301,"count":1},
{"start":152,"end":253,"count":1}]);
Expand All @@ -1105,11 +1095,86 @@ function test(foo = (()=>{})) { // 0000
return {foo}; // 0050
} // 0100
// 0150
test(()=>{}).foo(); // 0200`,
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}]
);

TestCoverage(
"https://crbug.com/v8/10030 - original",
`
function a (shouldThrow) { // 0000
try { // 0050
if (shouldThrow) // 0100
throw Error('I threw!'); // 0150
return 'I ran'; // 0200
} catch(e) { // 0250
console.info('caught'); // 0300
} // 0350
} // 0400
a(false); // 0450
a(true); // 0500
`,
[{"start":0,"end":549,"count":1},
{"start":0,"end":401,"count":2},
{"start":156,"end":353,"count":1}]
);

TestCoverage(
"https://crbug.com/v8/10030 - only throw",
`
function a (shouldThrow) { // 0000
try { // 0050
if (shouldThrow) // 0100
throw Error('I threw!'); // 0150
return 'I ran'; // 0200
} catch(e) { // 0250
console.info('caught'); // 0300
} // 0350
} // 0400
a(true); // 0450
`,
[{"start":0,"end":499,"count":1},
{"start":0,"end":401,"count":1},
{"start":180,"end":254,"count":0}]
);

TestCoverage(
"https://crbug.com/v8/10030 - finally",
`
function a (shouldThrow) { // 0000
try { // 0050
return 'I ran'; // 0100
} finally { // 0150
console.info('finally'); // 0200
} // 0250
} // 0300
a(false); // 0350
a(true); // 0400
`,
[{"start":0,"end":449,"count":1},
{"start":0,"end":301,"count":2}]);

TestCoverage(
"https://crbug.com/v8/10030 - catch & finally",
`
function a (shouldThrow) { // 0000
try { // 0050
return 'I ran'; // 0100
} catch (e) { // 0150
console.info('caught'); // 0200
} finally { // 0250
console.info('finally'); // 0300
} // 0350
} // 0400
a(false); // 0450
a(true); // 0500
`,
[{"start":0,"end":549,"count":1},
{"start":0,"end":401,"count":2},
{"start":154,"end":254,"count":0}]);

%DebugToggleBlockCoverage(false);

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