From 3f2221dfb9ab33b7ac44bbf822a78753a0357d25 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Wed, 21 Jun 2023 23:52:23 +0200
Subject: mem2reg: implement ssa construction; this breaks regalloc right now

---
 io.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index d8652e3..d85d8d3 100644
--- a/io.c
+++ b/io.c
@@ -637,8 +637,8 @@ mapopen(const char **err, const char *path)
       int ret;
 
       do {
-         enum { CHUNKSIZ = 1<<16 };
-         if ((cap += CHUNKSIZ) < CHUNKSIZ) {
+         enum { CHUNKSIZ = 1<<10 };
+         if (f.n + CHUNKSIZ >= cap && (cap += CHUNKSIZ) < CHUNKSIZ) {
             /* overflow */
             free(p);
             goto Big;
-- 
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