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Fixed bug: wrong stack limit when entering a coroutine

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When entering a coroutine, the computation of nCcalls added 'from->nci'
to correct for preallocated CallInfos, but 'nci' includes also the
Callinfos already used.
This commit is contained in:
Roberto Ierusalimschy
2020-07-13 13:39:02 -03:00
parent 0f1cd0eba9
commit e1d8770f12
2 changed files with 17 additions and 1 deletions
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2
ldo.c
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@@ -674,7 +674,7 @@ LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs,
if (from == NULL)
L->nCcalls = CSTACKTHREAD;
else /* correct 'nCcalls' for this thread */
L->nCcalls = getCcalls(from) + from->nci - L->nci - CSTACKCF;
L->nCcalls = getCcalls(from) - L->nci - CSTACKCF;
if (L->nCcalls <= CSTACKERR)
return resume_error(L, "C stack overflow", nargs);
luai_userstateresume(L, nargs);