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-rw-r--r--gnu/packages/patches/less-hurd-path-max.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/gnu/packages/patches/less-hurd-path-max.patch b/gnu/packages/patches/less-hurd-path-max.patch
new file mode 100644
index 0000000000..4d23a08788
--- /dev/null
+++ b/gnu/packages/patches/less-hurd-path-max.patch
@@ -0,0 +1,36 @@
+Avoid usage of PATH_MAX.
+
+Submitted to bug-less@gnu.org.
+
+From ef652341ed8b2c14ac40312ccd4ed329cb69fd0c Mon Sep 17 00:00:00 2001
+From: Jan Nieuwenhuizen <janneke@gnu.org>
+Date: Sat, 7 Mar 2020 14:57:19 +0100
+Subject: [PATCH] Avoid usage of PATH_MAX.
+
+* filename.c (lrealpath): Have realpath allocate the buffer. Fixes
+compilation on the Hurd and avoids possible buffer overflow on other
+systems.
+---
+ filename.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/filename.c b/filename.c
+index e420837..faa71b0 100644
+--- a/filename.c
++++ b/filename.c
+@@ -795,9 +795,9 @@ lrealpath(path)
+ char *path;
+ {
+ #if HAVE_REALPATH
+- char rpath[PATH_MAX];
+- if (realpath(path, rpath) != NULL)
+- return (save(rpath));
++ char *rpath = NULL;
++ if ((rpath = realpath(path, rpath)) != NULL)
++ return (rpath);
+ #endif
+ return (save(path));
+ }
+--
+2.24.0
+