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e4cf74abfa
For the most part, the differences between the diagnostics introduced
by the C++ implementation and the new SwiftIfConfig implementation are
cosmetic, so these are only wording changes.
The one major difference is that we've dropped the warnings about
potential typos in os/arch checks. For example, if one writes:
#if os(bisionos)
// ...
#endif
The C++ implementation will produce a warning "unknown operating system
for build configuration 'os'" with a note asking "did you mean
'visionOS'"? These warnings rely on a static list of known operating
systems and architectures, which is somewhat unfortunate: the whole
point of these checks is that the Swift you're dealing with might not
have support for those operating systems/architectures, so while these
warnings can be helpful in a few cases, they also cause false
positives when porting. Therefore, I chose not to bring them forward.
19 lines
602 B
Swift
19 lines
602 B
Swift
// RUN: %target-typecheck-verify-swift
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#if 0 // expected-error {{'0' is not a valid conditional compilation expression, use 'false'}}
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// expected-note@-1{{replace with Boolean literal 'false'}}{{5-6=false}}
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let x = 1
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#endif
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#if 1 // expected-error {{'1' is not a valid conditional compilation expression, use 'true'}}
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// expected-note@-1{{replace with Boolean literal 'true'}}{{5-6=true}}
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let x = 1
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#endif
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// expected-error@+1{{invalid conditional compilation expression}}
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#if 6
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var u: V { didSet {} }
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// expected-error@+1{{expected #else or #endif at end of conditional compilation block}}
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