Johnni Winther
2414b293e1
This requires a change to flow analysis that does not promote expressions to Never through is-tests and equality tests. Change-Id: Iec2ba5b78e61d205ad21dad6f07dbdb25fc746d3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/163380 Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
59 lines
1.3 KiB
Plaintext
59 lines
1.3 KiB
Plaintext
library /*isNonNullableByDefault*/;
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//
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// Problems in library:
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//
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// pkg/front_end/testcases/nnbd/switch_redesign_fall_over.dart:23:5: Error: Switch case may fall through to the next case.
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// case -42: // Error.
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// ^
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//
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import self as self;
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import "dart:core" as core;
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import "dart:_internal" as _in;
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abstract class A extends core::Object {
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synthetic constructor •() → self::A
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: super core::Object::•()
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;
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method foo(core::int x, core::bool b) → dynamic {
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switch(x) {
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#L1:
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case #C1:
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{
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let final Never #t1 = this.{self::A::neverReturn}() in throw new _in::ReachabilityError::•("`null` encountered as the result from expression with type `Never`.");
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}
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#L2:
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default:
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{
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self::bar();
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}
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}
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}
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abstract method neverReturn() → Never;
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}
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static method bar() → dynamic {}
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static method foo(core::int x, core::bool b) → dynamic {
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switch(x) {
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#L3:
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case #C1:
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{
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let final Never #t2 = b ?{Never} throw "hest" : throw "fisk" in throw new _in::ReachabilityError::•("`null` encountered as the result from expression with type `Never`.");
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}
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#L4:
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case #C2:
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{
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self::bar();
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}
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#L5:
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default:
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{
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self::bar();
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}
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}
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}
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static method main() → dynamic {}
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constants {
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#C1 = 42
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#C2 = -42
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}
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