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Growth factor of 1.5 for stack and lexical buffer

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This commit is contained in:
Roberto Ierusalimschy
2025-03-31 13:44:41 -03:00
parent 37a1b72706
commit f4123b2fc2
3 changed files with 11 additions and 11 deletions
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6
llex.c
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@@ -62,10 +62,10 @@ static l_noret lexerror (LexState *ls, const char *msg, int token);
static void save (LexState *ls, int c) {
Mbuffer *b = ls->buff;
if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
size_t newsize;
if (luaZ_sizebuffer(b) >= MAX_SIZE/2)
size_t newsize = luaZ_sizebuffer(b); /* get old size */;
if (newsize >= (MAX_SIZE/3 * 2)) /* larger than MAX_SIZE/1.5 ? */
lexerror(ls, "lexical element too long", 0);
newsize = luaZ_sizebuffer(b) * 2;
newsize += (newsize >> 1); /* new size is 1.5 times the old one */
luaZ_resizebuffer(ls->L, b, newsize);
}
b->buffer[luaZ_bufflen(b)++] = cast_char(c);