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Check that there is space in local variable array

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Otherwise it can overflow due to for loop's hidden
variables.

Fix #561
This commit is contained in:
Aleksi Salmela
2018-06-13 00:59:55 +03:00
parent 40c927f440
commit e7b1bade1a
2 changed files with 188 additions and 0 deletions
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test/regression/561.wren
+178
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@@ -0,0 +1,178 @@
// This test caused an array oveflow in local variable array due to hidden
// variables of for loop
// expect error line 91
var z = []
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
for (x in z) {
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}