From 06061892698f227feb7babee95bc80400b2e6a85 Mon Sep 17 00:00:00 2001
From: Nathan Fisher <jeang3nie@hitchhiker-linux.org>
Date: Mon, 12 Feb 2024 12:20:29 -0500
Subject: [PATCH] Make `parsePreRelease` copy the original string into a fixed
 width buffer so it avoids modifying the original string via `strntok` or
 similar

---
 semver.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/semver.c b/semver.c
index 3b07e97..6bd24db 100644
--- a/semver.c
+++ b/semver.c
@@ -130,8 +130,12 @@ int parseGitRev(char *vp, GitRevision *git) {
 int parsePreRelease(PreRelease *pr, char *s) {
     PreReleaseTag tag;
     long          val = 0;
-    char         *vp;
+    char          v[50];
+    char         *vp = (char *)v;
+    ssize_t       len = strnlen(s, 52);
 
+    if (len > 50) return 1;
+    memcpy(s, vp, len);
     if (strncasecmp(s, "alpha", 5) == 0) {
         tag = Alpha;
         vp = s + 5;