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Wrong expected argument type in diagnostic #81309

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AnthonyLatsis opened this issue May 5, 2025 · 1 comment
Open

Wrong expected argument type in diagnostic #81309

AnthonyLatsis opened this issue May 5, 2025 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. call expressions Feature → expressions: Call expressions compiler The Swift compiler itself diagnostics QoI Bug: Diagnostics Quality of Implementation expressions Feature: expressions swift 6.2 type checker Area → compiler: Semantic analysis

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@AnthonyLatsis
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Description

The first error below is correct, and then after that the compiler looses sense of what’s going on.

Reproduction

func f(p: Int, _: String) {}
f(0, "")
error: missing argument label 'p:' in call [missing_argument_labels]
f(0, "")
 ^
  p: 
error: cannot convert value of type 'Int' to expected argument type 'String' [cannot_convert_argument_value]
f(0, "")
  ^
error: cannot convert value of type 'String' to expected argument type 'Int' [cannot_convert_argument_value]
f(0, "")
     ^

Expected behavior

Only the first diagnostic.

Environment

Swift version 6.2-dev (LLVM 736ebbfa5fe3371, Swift d033eec)

Additional information

No response
@AnthonyLatsis AnthonyLatsis added bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. call expressions Feature → expressions: Call expressions compiler The Swift compiler itself diagnostics QoI Bug: Diagnostics Quality of Implementation expressions Feature: expressions swift 6.2 type checker Area → compiler: Semantic analysis labels May 5, 2025
@xedin
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xedin commented May 5, 2025

A reference point for this one is ArgumentFailureTracker::relabelArguments.

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. call expressions Feature → expressions: Call expressions compiler The Swift compiler itself diagnostics QoI Bug: Diagnostics Quality of Implementation expressions Feature: expressions swift 6.2 type checker Area → compiler: Semantic analysis
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@xedin @AnthonyLatsis