From: Pádraig Brady <P@draigBrady.com>
Date: Wed, 15 Jan 2025 22:08:07 +0000 (+0000)
Subject: yes: avoid failure on CHERI protected systems
X-Git-Tag: v9.6~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=261f13bcf84a6f7a3241bab48c074879db789fca;p=thirdparty%2Fcoreutils.git

yes: avoid failure on CHERI protected systems

* src/yes.c (main): Don't reuse the argv array as CHERI's
capability bounds do not allow for that, failing like:
  $ yes $(seq 156) | head -n1
  In-address space security exception (core dumped)
---

diff --git a/src/yes.c b/src/yes.c
index 396618cb5b..ceb7ce447b 100644
--- a/src/yes.c
+++ b/src/yes.c
@@ -96,6 +96,11 @@ main (int argc, char **argv)
       reuse_operand_strings = false;
     }
 
+#if defined __CHERI__
+  /* Cheri capability bounds do not allow for this.  */
+  reuse_operand_strings = false;
+#endif
+
   /* Fill the buffer with one copy of the output.  If possible, reuse
      the operands strings; this wins when the buffer would be large.  */
   char *buf = reuse_operand_strings ? *operands : xmalloc (bufalloc);