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7c74890bd8
This check will run on each type-checked primary input of the current compilation and emit a warning diagnostic for all discovered occurences of this code pattern when the performance hint diagnostic is enabled
40 lines
2.2 KiB
Swift
40 lines
2.2 KiB
Swift
// RUN: %empty-directory(%t)
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// Ensure ignored by-default
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// RUN: %target-swift-frontend -typecheck %s -diagnostic-style llvm -verify
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// Ensure enabled with '-Wwarning'
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// RUN: %target-swift-frontend -typecheck %s -diagnostic-style llvm -Wwarning PerformanceHints &> %t/output_warn.txt
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// RUN: cat %t/output_warn.txt | %FileCheck %s -check-prefix CHECK-WARN
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// RUN: %target-swift-frontend -typecheck %s -diagnostic-style llvm -Wwarning ReturnTypeImplicitCopy &> %t/output_warn.txt
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// RUN: cat %t/output_warn.txt | %FileCheck %s -check-prefix CHECK-WARN
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// Ensure enabled with '-Werror' for the broad category and downgraded to warning for the subgroup with '-Wwarning'
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// RUN: %target-swift-frontend -typecheck %s -diagnostic-style llvm -Werror PerformanceHints -Wwarning ReturnTypeImplicitCopy &> %t/output_warn.txt
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// RUN: cat %t/output_warn.txt | %FileCheck %s -check-prefix CHECK-WARN
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// Ensure enabled with '-Wwarning' for the broad category and downgraded to warning for the subgroup with '-Werror'
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// RUN: not %target-swift-frontend -typecheck %s -diagnostic-style llvm -Wwarning PerformanceHints -Werror ReturnTypeImplicitCopy &> %t/output_err.txt
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// RUN: cat %t/output_err.txt | %FileCheck %s -check-prefix CHECK-ERR
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// Ensure escalated with '-Werror'
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// RUN: not %target-swift-frontend -typecheck %s -diagnostic-style llvm -Werror ReturnTypeImplicitCopy &> %t/output_err.txt
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// RUN: cat %t/output_err.txt | %FileCheck %s -check-prefix CHECK-ERR
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// CHECK-ERR: error: Performance: 'foo()' returns an array, leading to implicit copies. Consider using an 'inout' parameter instead. [#ReturnTypeImplicitCopy]
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// CHECK-ERR: error: Performance: closure returns an array, leading to implicit copies. Consider using an 'inout' parameter instead. [#ReturnTypeImplicitCopy]
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// CHECK-WARN: warning: Performance: 'foo()' returns an array, leading to implicit copies. Consider using an 'inout' parameter instead. [#ReturnTypeImplicitCopy]
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// CHECK-WARN: warning: Performance: closure returns an array, leading to implicit copies. Consider using an 'inout' parameter instead. [#ReturnTypeImplicitCopy]
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func foo() -> [Int] {
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return [1,2,3,4,5,6]
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}
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func bar() -> Int {
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let myCoolArray = { () -> [Int] in
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return [1, 2]
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}
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return myCoolArray().count
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}
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