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make MARK a constant that points to itself

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This commit is contained in:
Sven M. Hallberg 2015-09-08 16:19:45 +02:00
parent fb5122ec88
commit 5b4550ab0f
1 changed files with 4 additions and 4 deletions
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8
src/backends/llk.c
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@ -286,7 +286,7 @@ typedef struct {
// execute on their corresponding result.
// also on the stack below the mark, we store the previously accumulated
// value for the surrounding production.
static void *MARK = (void *)-1; // stack frame delimiter
static void const * const MARK = &MARK; // stack frame delimiter
static HLLkState *llk_parse_start_(HAllocator* mm__, const HParser* parser)
{
@ -421,9 +421,9 @@ static HCountedArray *llk_parse_chunk_(HLLkState *s, const HParser* parser,
assert(!p->items[0] || p->items[0] != x);
// push stack frame
h_slist_push(stack, seq); // save current partial value
h_slist_push(stack, x); // save the nonterminal
h_slist_push(stack, MARK); // frame delimiter
h_slist_push(stack, seq); // save current partial value
h_slist_push(stack, x); // save the nonterminal
h_slist_push(stack, (void *)MARK); // frame delimiter
// open a fresh result sequence
seq = h_carray_new(arena);