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Tree: cdc1c90417

christophwille/closedhierarchies

christophwille/membench

compound-assignment-operators

fix/1982-params-attribute-args

fix/2040-invalid-xml-characters

fix/2093-navigateto-reference-assembly

fix/2362-xalz-references

fix/2372-address-taken-by

fix/3282-indexer-optional-arguments

fix/3568-record-member-order

fix/4059-deconstruct-out-slots

fix/lambda-parameter-syntax

fix/scroll-children-on-expand

gh-pages

ldmembertoken

master

natural-type-lambdas-methods

null-coalescing-assignment

release/10.1

release/6.2

release/7.1

release/7.2

release/8.1

substring-optimizations

tests/829-async-method-builder-override

tests/829-collection-expressions

tests/829-compound-assignment-operators

tests/829-coverage-audit

tests/829-expression-tree-named-optional-args

tests/829-expression-variables-in-initializers

tests/829-extended-property-patterns

tests/829-extension-members

tests/829-extension-operators

tests/829-file-local-types

tests/829-improved-definite-assignment

tests/829-improved-overload-candidates

tests/829-inline-arrays

tests/829-interpolated-string-improvements

tests/829-lambda-param-modifiers

tests/829-list-patterns

tests/829-lock-object

tests/829-mixed-deconstruction

tests/829-null-coalescing-assignment

tests/829-null-conditional-assignment

tests/829-object-initializer-indexer

tests/829-overload-resolution-priority

tests/829-params-collections

tests/829-pattern-matching-improvements

tests/829-primary-constructors

tests/829-ref-unsafe-in-iterators-async

tests/829-sealed-record-tostring

tests/829-target-typed-conditional

tests/829-tuple-comparison

win-a11y-textsize

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ILSpy/ICSharpCode.Decompiler/FlowAnalysis

History

Siegfried Pammer fd623ccf4f Fix #4059: treat a Deconstruct out argument as a definition ... The reaching-definitions analysis does not track address loads, so a variable that is only ever written through its address stays potentially uninitialized for its whole life. SplitVariables merges every such load into one live range, which is why csc lowering two deconstructions onto the same pair of temporaries left neither of them recognizable. IL cannot express that a method assigns through an address without reading it first - 'out' is a C# convention over 'ref' - so the address loads that qualify have to be named. A Deconstruct method is the one case that matters here, and C#'s definite assignment rules rule out a read; a Deconstruct method written in IL could read the argument, and that possibility is knowingly ignored. Assisted-by: Claude:claude-opus-5:Claude Code		1 week ago
..
ControlFlowNode.cs	Fix IDE2000 globally	9 months ago
DataFlowVisitor.cs	dev: Strip BOM mark from text files	1 year ago
DefiniteAssignmentVisitor.cs	dev: Strip BOM mark from text files	1 year ago
Dominance.cs	dev: Strip BOM mark from text files	1 year ago
ReachingDefinitionsVisitor.cs	Fix #4059: treat a Deconstruct out argument as a definition	1 week ago