From 674d4e36956cf84ecf7fe027325f717ba734d885 Mon Sep 17 00:00:00 2001
From: jD91mZM2 <me@krake.one>
Date: Sat, 30 Jun 2018 09:25:05 +0200
Subject: [PATCH] Preallocate because why not
---
src/unistd/src/lib.rs | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/unistd/src/lib.rs b/src/unistd/src/lib.rs
index 6a6bc339..2071c6f4 100644
--- a/src/unistd/src/lib.rs
+++ b/src/unistd/src/lib.rs
@@ -173,7 +173,15 @@ pub unsafe extern "C" fn execve(
env = env.offset(1);
}
- let mut args: Vec<[usize; 2]> = Vec::new();
+ let mut len = 0;
+ for i in 0.. {
+ if (*arg.offset(i)).is_null() {
+ len = i;
+ break;
+ }
+ }
+
+ let mut args: Vec<[usize; 2]> = Vec::with_capacity(len);
let mut arg = argv;
while !(*arg).is_null() {
args.push([*arg as usize, c_str(*arg).len()]);
--
GitLab