Files
kotlin-fork/compiler/testData/diagnostics/testsWithStdLib/tryCatch/falsePositiveSmartcasts.kt
T
Denis.Zharkov 2ecba6ac39 Remove WITH_NEW_INFERENCE directive from all tests
This directive anyway does not make test run twice with OI, and with NI
It only once run the test with specific settings (// LANGUAGE)
and ignores irrelevant (OI or NI tags)
2021-05-25 13:28:26 +03:00

105 lines
2.3 KiB
Kotlin
Vendored

// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER
// SKIP_TXT
// Related issue: KT-28370
class ExcA : Exception()
class ExcB : Exception()
fun test1() {
var x: String? = null
x = ""
try {
x = null
} catch (e: Exception) {
<!DEBUG_INFO_SMARTCAST!>x<!>.length // smartcast shouldn't be allowed (OOME could happen after `x = null`)
throw e
}
finally {
// smartcast shouldn't be allowed, `x = null` could've happened
<!DEBUG_INFO_SMARTCAST!>x<!>.length
}
// smartcast shouldn't be allowed, `x = null` could've happened
<!DEBUG_INFO_SMARTCAST!>x<!>.length
}
// With old DFA of try/catch info about unsound smartcasts after try
// removes only if there is at least one catch branch that not returns Nothing
fun test2() {
var x: String? = null
x = ""
try {
x = null
} catch (e: Exception) {
<!DEBUG_INFO_SMARTCAST!>x<!>.length
}
finally {
x<!UNSAFE_CALL!>.<!>length
}
x<!UNSAFE_CALL!>.<!>length
}
fun test3() {
var t2: Boolean? = true
if (t2 != null) { // or `t2 is Boolean`
try {
throw Exception()
} catch (e: Exception) {
t2 = null
}
<!DEBUG_INFO_SMARTCAST!>t2<!>.not() // wrong smartcast, NPE
}
}
fun test4() {
var t2: Boolean? = true
if (t2 != null) { // or `t2 is Boolean`
try {
t2 = null
} finally { }
<!DEBUG_INFO_SMARTCAST!>t2<!>.not() // wrong smartcast, NPE
}
}
fun test5() {
var s1: String? = null
var s2: String? = null
s1 = ""
s2 = ""
try {
TODO()
}
catch (e: ExcA) {
s1 = ""
}
catch (e: ExcB) {
s2 = null
return
}
finally {
<!DEBUG_INFO_SMARTCAST!>s1<!>.length
<!DEBUG_INFO_SMARTCAST!>s2<!>.length
}
<!DEBUG_INFO_SMARTCAST!>s1<!>.length
<!DEBUG_INFO_SMARTCAST!>s2<!>.length
}
fun test6(s1: String?, s2: String?) {
var s: String? = null
s = ""
try {
s = null
requireNotNull(s1)
}
catch (e: Exception) {
return
}
finally {
<!DEBUG_INFO_SMARTCAST!>s<!>.length
requireNotNull(s2)
}
<!DEBUG_INFO_SMARTCAST!>s<!>.length
s1<!UNSAFE_CALL!>.<!>length
<!DEBUG_INFO_SMARTCAST!>s2<!>.length
}