diff options
| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2018-11-29 16:02:44 -0200 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2018-11-29 16:02:44 -0200 |
| commit | 6d04537ea660fd12fc16c328366b701fabaf4919 (patch) | |
| tree | 41eab6e4d87552e29731db552f7d58d679c56973 /testes/api.lua | |
| parent | 7696c6474fe51ed59fee324e78c1233af74febdd (diff) | |
| download | lua-github-6d04537ea660fd12fc16c328366b701fabaf4919.tar.gz | |
A to-be-closed variable must have a closable value (or be nil)
It is an error for a to-be-closed variable to have a non-closable
non-nil value when it is being closed. This situation does not seem to
be useful and often hints to an error. (Particularly in the C API, it is
easy to change a to-be-closed index by mistake.)
Diffstat (limited to 'testes/api.lua')
| -rw-r--r-- | testes/api.lua | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/testes/api.lua b/testes/api.lua index ed857fd0..6f35e132 100644 --- a/testes/api.lua +++ b/testes/api.lua @@ -366,7 +366,7 @@ do -- "argerror" without frames assert(T.checkpanic("loadstring 4") == "bad argument #4 (string expected, got no value)") - + -- memory error T.totalmem(T.totalmem()+10000) -- set low memory limit (+10k) @@ -987,12 +987,12 @@ do local a, b = T.testC([[ call 0 1 # create resource - pushint 34 + pushnil toclose -2 # mark call result to be closed - toclose -1 # mark number to be closed (will be ignored) + toclose -1 # mark nil to be closed (will be ignored) return 2 ]], newresource) - assert(a[1] == 11 and b == 34) + assert(a[1] == 11 and b == nil) assert(#openresource == 0) -- was closed -- repeat the test, but calling function in a 'multret' context @@ -1005,7 +1005,7 @@ do assert(#openresource == 0) -- was closed -- error - local a, b = pcall(T.testC, [[ + local a, b = pcall(T.makeCfunc[[ call 0 1 # create resource toclose -1 # mark it to be closed error # resource is the error object @@ -1038,6 +1038,13 @@ do ]], newresource, check) assert(a == 3) -- no extra items left in the stack + -- non-closable value + local a, b = pcall(T.makeCfunc[[ + pushint 32 + toclose -1 + ]]) + assert(not a and string.find(b, "(C temporary)")) + end @@ -1249,9 +1256,9 @@ do -- closing state with no extra memory T.closestate(L) T.alloccount() end - + do -- garbage collection with no extra memory - local L = T.newstate() + local L = T.newstate() T.loadlib(L) local res = (T.doremote(L, [[ _ENV = require"_G" |