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-rw-r--r--tests/init/t8314.nim27
-rw-r--r--tests/init/tcompiles.nim101
-rw-r--r--tests/init/tinitchecks_v2.nim83
-rw-r--r--tests/init/tlet.nim55
-rw-r--r--tests/init/tlet_uninit2.nim5
-rw-r--r--tests/init/tlet_uninit3.nim24
-rw-r--r--tests/init/tlet_uninit4.nim12
-rw-r--r--tests/init/toutparam_subtype.nim24
-rw-r--r--tests/init/toutparams.nim14
-rw-r--r--tests/init/tproveinit.nim18
-rw-r--r--tests/init/treturns.nim106
-rw-r--r--tests/init/tuninit1.nim36
-rw-r--r--tests/init/tuninit2.nim54
-rw-r--r--tests/init/tzeroarray.nim18
14 files changed, 577 insertions, 0 deletions
diff --git a/tests/init/t8314.nim b/tests/init/t8314.nim
new file mode 100644
index 000000000..47c8480c2
--- /dev/null
+++ b/tests/init/t8314.nim
@@ -0,0 +1,27 @@
+discard """
+  nimout: '''
+t8314.nim(14, 7) Hint: BEGIN [User]
+t8314.nim(25, 7) Hint: END [User]
+  '''
+
+output: '''
+1
+1
+1
+'''
+"""
+
+{.hint: "BEGIN".}
+proc foo(x: range[1..10]) =
+  block:
+    var (y,) = (x,)
+    echo y
+  block:
+    var (_,y) = (1,x)
+    echo y
+  block:
+    var (y,_,) = (x,1,)
+    echo y
+{.hint: "END".}
+
+foo(1)
diff --git a/tests/init/tcompiles.nim b/tests/init/tcompiles.nim
new file mode 100644
index 000000000..67e17b241
--- /dev/null
+++ b/tests/init/tcompiles.nim
@@ -0,0 +1,101 @@
+discard """
+  matrix: "--warningAsError:ProveInit --warningAsError:Uninit"
+"""
+
+{.experimental: "strictdefs".}
+
+type Test = object
+  id: int
+
+proc foo {.noreturn.} = discard
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      foo()
+    else:
+      foo()
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      result = Test()
+    else:
+      foo()
+
+  discard test(true)
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      result = Test()
+    else:
+      return Test()
+
+  discard test(true)
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      return Test()
+    else:
+      return Test()
+
+  discard test(true)
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      result = Test()
+    else:
+      result = Test()
+      return
+
+  discard test(true)
+
+block:
+  proc test(x: bool): Test =
+    if x:
+      result = Test()
+      return
+    else:
+      raise newException(ValueError, "unreachable")
+
+  discard test(true)
+
+# bug #21615
+# bug #16735
+
+block:
+  type Test {.requiresInit.} = object
+    id: int
+
+  proc bar(): int =
+    raise newException(CatchableError, "error")
+
+  proc test(): Test =
+    raise newException(CatchableError, "")
+
+  template catchError(body) =
+    var done = false
+    try:
+      body
+    except CatchableError:
+      done = true
+    doAssert done
+
+  catchError:
+    echo test()
+
+  catchError:
+    echo bar()
+
+block:
+  proc foo(x: ptr int) =
+    discard
+
+  proc main =
+    var s: int
+    foo(addr s)
+
+  main()
diff --git a/tests/init/tinitchecks_v2.nim b/tests/init/tinitchecks_v2.nim
new file mode 100644
index 000000000..f7716bcca
--- /dev/null
+++ b/tests/init/tinitchecks_v2.nim
@@ -0,0 +1,83 @@
+discard """
+cmd: "nim check $file"
+action: "compile"
+"""
+
+{.experimental: "strictDefs".}
+
+proc myopen(f: out File; s: string): bool =
+  f = default(File)
+  result = false
+
+proc main =
+  var f: File
+  if myopen(f, "aarg"):
+    f.close
+
+proc invalid =
+  var s: seq[string]
+  s.add "abc" #[tt.Warning
+  ^ use explicit initialization of 's' for clarity [Uninit] ]#
+
+proc valid =
+  var s: seq[string] = @[]
+  s.add "abc" # valid!
+
+main()
+invalid()
+valid()
+
+proc branchy(cond: bool) =
+  var s: seq[string]
+  if cond:
+    s = @["y"]
+  else:
+    s = @[]
+  s.add "abc" # valid!
+
+branchy true
+
+proc p(x: out int; y: out string; cond: bool) = #[tt.Warning
+                   ^ Cannot prove that 'y' is initialized. This will become a compile time error in the future. [ProveInit] ]#
+  x = 4
+  if cond:
+    y = "abc"
+  # error: not every path initializes 'y'
+
+var gl: int
+var gs: string
+p gl, gs, false
+
+proc canRaise(x: int): int =
+  result = x
+  raise newException(ValueError, "wrong")
+
+proc currentlyValid(x: out int; y: out string; cond: bool) =
+  x = canRaise(45)
+  y = "abc" # <-- error: not every path initializes 'y'
+
+currentlyValid gl, gs, false
+
+block: # previously effects/toutparam
+  proc gah[T](x: out T) =
+    x = 3
+
+  proc arr1 =
+    var a: array[2, int]
+    var x: int
+    gah(x)
+    a[0] = 3
+    a[x] = 3
+    echo x
+
+  arr1()
+
+  proc arr2 =
+    var a: array[2, int]
+    var x: int
+    a[0] = 3
+    a[x] = 3 #[tt.Warning
+      ^ use explicit initialization of 'x' for clarity [Uninit] ]#
+    echo x
+
+  arr2()
diff --git a/tests/init/tlet.nim b/tests/init/tlet.nim
new file mode 100644
index 000000000..e32bedb18
--- /dev/null
+++ b/tests/init/tlet.nim
@@ -0,0 +1,55 @@
+{.experimental: "strictDefs".}
+
+proc bar(x: out string) =
+  x = "abc"
+
+template moe = # bug #21043
+  try:
+    discard
+  except ValueError as e:
+    echo(e.msg)
+
+template moe0 {.dirty.} = # bug #21043
+  try:
+    discard
+  except ValueError as e:
+    echo(e.msg)
+
+proc foo() =
+  block:
+    let x: string
+    if true:
+      x = "abc"
+    else:
+      x = "def"
+    doAssert x == "abc"
+  block:
+    let y: string
+    bar(y)
+    doAssert y == "abc"
+  block:
+    let x: string
+    if true:
+      x = "abc"
+      discard "abc"
+    else:
+      x = "def"
+      discard "def"
+    doAssert x == "abc"
+  block: #
+    let x {.used.} : int
+  block: #
+    let x: float
+    x = 1.234
+    doAssert x == 1.234
+
+  block:
+    try:
+      discard
+    except ValueError as e:
+      echo(e.msg)
+  moe()
+  moe0()
+
+static: foo()
+foo()
diff --git a/tests/init/tlet_uninit2.nim b/tests/init/tlet_uninit2.nim
new file mode 100644
index 000000000..174aa28f7
--- /dev/null
+++ b/tests/init/tlet_uninit2.nim
@@ -0,0 +1,5 @@
+discard """
+  errormsg: "'let' symbol requires an initialization"
+"""
+
+let x: int
\ No newline at end of file
diff --git a/tests/init/tlet_uninit3.nim b/tests/init/tlet_uninit3.nim
new file mode 100644
index 000000000..cb786f8c8
--- /dev/null
+++ b/tests/init/tlet_uninit3.nim
@@ -0,0 +1,24 @@
+discard """
+  cmd: "nim check $file"
+  action: "reject"
+  nimout: '''
+tlet_uninit3.nim(13, 5) Error: 'let' symbol requires an initialization
+tlet_uninit3.nim(19, 5) Error: 'x' cannot be assigned to
+tlet_uninit3.nim(23, 11) Error: 'let' symbol requires an initialization
+'''
+"""
+
+{.experimental: "strictDefs".}
+
+let global {.used.}: int
+
+proc foo() =
+  block:
+    let x: int
+    x = 13
+    x = 14
+
+  block:
+    let x: int
+    doAssert x == 0
+foo()
diff --git a/tests/init/tlet_uninit4.nim b/tests/init/tlet_uninit4.nim
new file mode 100644
index 000000000..c57d15ff8
--- /dev/null
+++ b/tests/init/tlet_uninit4.nim
@@ -0,0 +1,12 @@
+discard """
+  errormsg: "type mismatch: got <string>"
+"""
+
+{.experimental: "strictDefs".}
+
+proc foo(x: var string) =
+  echo x
+
+proc bar() =
+  let x: string
+  foo(x)
diff --git a/tests/init/toutparam_subtype.nim b/tests/init/toutparam_subtype.nim
new file mode 100644
index 000000000..3597f1459
--- /dev/null
+++ b/tests/init/toutparam_subtype.nim
@@ -0,0 +1,24 @@
+discard """
+cmd: "nim check $file"
+action: "compile"
+errormsg: "type mismatch: got <Subclass[system.int]>"
+line: 21
+"""
+
+{.experimental: "strictDefs".}
+
+type
+  Superclass[T] = object of RootObj
+    a: T
+  Subclass[T] = object of Superclass[T]
+    s: string
+
+proc init[T](x: out Superclass[T]) =
+  x = Superclass(a: 8)
+
+proc subtypeCheck =
+  var v: Subclass[int]
+  init(v)
+  echo v.s # the 's' field was never initialized!
+
+subtypeCheck()
diff --git a/tests/init/toutparams.nim b/tests/init/toutparams.nim
new file mode 100644
index 000000000..590768599
--- /dev/null
+++ b/tests/init/toutparams.nim
@@ -0,0 +1,14 @@
+discard """
+  matrix: "--warningAsError:ProveInit"
+"""
+
+{.experimental: "strictdefs".}
+
+proc foo(x: out int) =
+  x = 1
+
+proc bar(x: out int) =
+  foo(x)
+
+var s: int
+bar(s)
diff --git a/tests/init/tproveinit.nim b/tests/init/tproveinit.nim
new file mode 100644
index 000000000..c9f688309
--- /dev/null
+++ b/tests/init/tproveinit.nim
@@ -0,0 +1,18 @@
+discard """
+  joinable: false
+"""
+
+{.warningAsError[ProveInit]:on.}
+template main() =
+  proc fn(): var int =
+    discard
+  discard fn()
+doAssert not compiles(main())
+
+# bug #9901
+import std/[sequtils, times]
+proc parseMyDates(line: string): DateTime =
+  result = parse(line, "yyyy-MM-dd")
+var dateStrings = @["2018-12-01", "2018-12-02", "2018-12-03"]
+var parsed = dateStrings.map(parseMyDates)
+discard parsed
diff --git a/tests/init/treturns.nim b/tests/init/treturns.nim
new file mode 100644
index 000000000..18cebe0b1
--- /dev/null
+++ b/tests/init/treturns.nim
@@ -0,0 +1,106 @@
+{.experimental: "strictdefs".}
+
+type Test = object
+  id: int
+
+proc foo {.noreturn.} = discard
+
+proc test1(): Test =
+  if true: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return Test()
+  else:
+    return
+
+proc test0(): Test =
+  if true: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return
+  else:
+    foo()
+
+proc test2(): Test =
+  if true: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return
+  else:
+    return
+
+proc test3(): Test =
+  if true: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return
+  else:
+    return Test()
+
+proc test4(): Test =
+  if true: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return
+  else:
+    result = Test()
+    return
+
+proc test5(x: bool): Test =
+  case x: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+  of true:
+    return
+  else:
+    return Test()
+
+proc test6(x: bool): Test =
+  case x: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+  of true:
+    return
+  else:
+    return
+
+proc test7(x: bool): Test =
+  case x: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+  of true:
+    return
+  else:
+    discard
+
+proc test8(x: bool): Test =
+  case x: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+  of true:
+    discard
+  else:
+    raise
+
+proc hasImportStmt(): bool =
+  if false: #[tt.Warning
+  ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+    return true
+  else:
+    discard
+
+discard hasImportStmt()
+
+block:
+  proc hasImportStmt(): bool =
+    if false: #[tt.Warning
+    ^ Cannot prove that 'result' is initialized. This will become a compile time error in the future. [ProveInit]]#
+      return true
+    else:
+      return
+
+  discard hasImportStmt()
+
+block:
+  block:
+    proc foo(x: var int) =
+      discard
+
+    proc main =
+      var s: int
+      foo(s)#[tt.Warning
+          ^ use explicit initialization of 's' for clarity [Uninit]]#
+
+    main()
+
diff --git a/tests/init/tuninit1.nim b/tests/init/tuninit1.nim
new file mode 100644
index 000000000..ac3007e8d
--- /dev/null
+++ b/tests/init/tuninit1.nim
@@ -0,0 +1,36 @@
+discard """
+  nimout: "tuninit1.nim(34, 11) Warning: use explicit initialization of 'y' for clarity [Uninit]"
+  action: compile
+"""
+
+import strutils
+{.experimental: "strictDefs".}
+{.warning[Uninit]:on.}
+
+proc p =
+  var x, y, z: int
+  if stdin.readLine == "true":
+    x = 34
+
+    while false:
+      y = 999
+      break
+
+    while true:
+      if x == 12: break
+      y = 9999
+
+    try:
+      z = parseInt("1233")
+    except Exception:
+      case x
+      of 34: z = 123
+      of 13: z = 34
+      else: z = 8
+  else:
+    y = 3444
+    x = 3111
+    z = 0
+  echo x, y, z
+
+p()
diff --git a/tests/init/tuninit2.nim b/tests/init/tuninit2.nim
new file mode 100644
index 000000000..950895c02
--- /dev/null
+++ b/tests/init/tuninit2.nim
@@ -0,0 +1,54 @@
+# bug #2316
+
+type
+    EventType = enum
+      QuitEvent = 5
+    AppMain* = ref object of RootObj
+        width: int
+        height: int
+        title: string
+        running: bool
+        event_type: EventType
+    App* = ref object of AppMain
+        draw_proc: proc(app: AppMain): void {.closure.}
+        events_proc: proc(app: AppMain): void {.closure.}
+        update_proc: proc(app: AppMain, dt: float): void {.closure.}
+        load_proc: proc(app: AppMain): void {.closure.}
+
+
+proc initApp*(t: string, w, h: int): App =
+    App(width: w, height: h, title: t, event_type: EventType.QuitEvent)
+
+
+method getTitle*(self: AppMain): string = self.title
+method getWidth*(self: AppMain): int = self.width
+method getHeight*(self: AppMain): int = self.height
+
+
+method draw*(self: App, draw: proc(app: AppMain)): void =
+    self.draw_proc = draw
+
+method load*(self: App, load: proc(a: AppMain)): void =
+    self.load_proc = load
+
+method events*(self: App, events: proc(app: AppMain)): void =
+    self.events_proc = events
+
+method update*(self: App, update: proc(app: AppMain, delta: float)): void =
+    self.update_proc = update
+
+method run*(self: App): void = discard
+
+var mygame = initApp("Example", 800, 600)
+
+mygame.load(proc(app: AppMain): void =
+    echo app.getTitle()
+    echo app.getWidth()
+    echo app.getHeight()
+)
+
+mygame.events(proc(app: AppMain): void =
+    discard
+)
+
+mygame.run()
diff --git a/tests/init/tzeroarray.nim b/tests/init/tzeroarray.nim
new file mode 100644
index 000000000..b784b601e
--- /dev/null
+++ b/tests/init/tzeroarray.nim
@@ -0,0 +1,18 @@
+discard """
+  output: done
+"""
+
+for i in 0 .. 1:
+  var a: array[0..4, int]
+  if a[0] != 0: quit "bug"
+  a[0] = 6
+
+proc main =
+  for i in 0 .. 1:
+    var a: array[0..4, int]
+    if a[0] != 0: quit "bug"
+    a[0] = 6
+
+main()
+echo "done"
+
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-07-14 07:28:27 +0000