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Reset Lua stack to drop unused returned values (#382)

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Since some Lua code may return values that will be left on stack, they
need to be removed to avoid growing the stack unnecessarily.
This commit is contained in:
Paul Kulchenko 2022-04-09 12:36:05 -07:00 • committed by GitHub
parent d31bebdd2d
commit 668dc42bac
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1 changed files with 2 additions and 1 deletions
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3
tool/net/redbean.c
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@ -176,6 +176,7 @@ STATIC_YOINK("zip_uri_support");
char *s = LuaFormatStack(L); \ char *s = LuaFormatStack(L); \
WARNF("lua stack should be empty!\n%s", s); \ WARNF("lua stack should be empty!\n%s", s); \
free(s); \ free(s); \
lua_settop(L, 0); \
} \ } \
} while (0) } while (0)
@ -1065,9 +1066,9 @@ static bool LuaOnClientConnection(void) {
dropit = lua_toboolean(L, -1); dropit = lua_toboolean(L, -1);
} else { } else {
LogLuaError("OnClientConnection", lua_tostring(L, -1)); LogLuaError("OnClientConnection", lua_tostring(L, -1));
lua_pop(L, 1); // pop error
dropit = false; dropit = false;
} }
lua_pop(L, 1); // pop result or error
AssertLuaStackIsEmpty(L); AssertLuaStackIsEmpty(L);
return dropit; return dropit;
#else #else