hare

commit 1530dabc54860804c1819aa5baa9d6b6a4cb78c2
parent c92881e5b8444d332635e95ea6ede13c2483ade9
Author: Drew DeVault <sir@cmpwn.com>
Date:   Fri, 13 Aug 2021 13:55:17 +0200

os::getenv: fix unbounded slice expression

Signed-off-by: Drew DeVault <sir@cmpwn.com>

Diffstat:
M
os/+linux/environ.ha
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/os/+linux/environ.ha b/os/+linux/environ.ha
@@ -37,7 +37,8 @@ export fn getenv(name: const str) (str | void) = {
 	const name_b = strings::toutf8(name);
 	for (let i = 0z; rt::envp[i] != null; i += 1) {
 		const item = rt::envp[i]: *[*]u8;
-		const eq: size = match (bytes::index(item[..], '=': u32: u8)) {
+		const ln = strings::cstrlen(item: *char);
+		const eq: size = match (bytes::index(item[..ln], '=': u32: u8)) {
 			void => abort("Environment violates System-V invariants"),
 			i: size => i,
 		};