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authorRoberto Ierusalimschy <roberto@inf.puc-rio.br>2025-02-26 11:31:10 -0300
committerRoberto Ierusalimschy <roberto@inf.puc-rio.br>2025-02-26 11:31:10 -0300
commitf9e35627ed26dff4114a1d01ff113d8b4cc91ab5 (patch)
treead817f574adcd2d57720c8a498626919b85e6e78 /testes
parentceac82f78be8baeddfa8536472d8b08df2eb7d49 (diff)
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'lua_State.nci' must be an integer
Lua can easily overflow an unsigned short counting nested calls. (The limit to this value is the maximum stack size, LUAI_MAXSTACK, which is currently 1e6.)
Diffstat (limited to 'testes')
-rw-r--r--testes/coroutine.lua12
1 files changed, 12 insertions, 0 deletions
diff --git a/testes/coroutine.lua b/testes/coroutine.lua
index 78b9bdca..abc08039 100644
--- a/testes/coroutine.lua
+++ b/testes/coroutine.lua
@@ -127,6 +127,18 @@ assert(#a == 22 and a[#a] == 79)
127x, a = nil 127x, a = nil
128 128
129 129
130do -- "bug" in 5.4.2
131 local function foo () foo () end -- just create a stack overflow
132 local co = coroutine.create(foo)
133 -- running this coroutine would overflow the unsigned short 'nci', the
134 -- counter of CallInfo structures available to the thread.
135 -- (The issue only manifests in an 'assert'.)
136 local st, msg = coroutine.resume(co)
137 assert(string.find(msg, "stack overflow"))
138 assert(coroutine.status(co) == "dead")
139end
140
141
130print("to-be-closed variables in coroutines") 142print("to-be-closed variables in coroutines")
131 143
132local function func2close (f) 144local function func2close (f)