From 6298903e35217ab69c279056f925fb72900ce0b7 Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Mon, 6 Jul 2020 12:11:54 -0300 Subject: Keep minimum size when shrinking a stack When shrinking a stack (during GC), do not make it smaller than the initial stack size. --- ldo.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/ldo.c b/ldo.c index c563b1d9..a89ac010 100644 --- a/ldo.c +++ b/ldo.c @@ -245,13 +245,12 @@ static int stackinuse (lua_State *L) { void luaD_shrinkstack (lua_State *L) { int inuse = stackinuse(L); - int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK; + int goodsize = inuse + BASIC_STACK_SIZE; if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK; /* respect stack limit */ /* if thread is currently not handling a stack overflow and its good size is smaller than current size, shrink its stack */ - if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) && - goodsize < L->stacksize) + if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) && goodsize < L->stacksize) luaD_reallocstack(L, goodsize, 0); /* ok if that fails */ else /* don't change stack */ condmovestack(L,{},{}); /* (change only for debugging) */ -- cgit v1.2.3-55-g6feb