From: Paul Floyd <pjfloyd@wanadoo.fr>
Date: Wed, 24 Dec 2025 16:15:49 +0000 (+0100)
Subject: Darwin syswrap: 1st arg of posix_spawn can be NULL
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d48f6d4ecb7c099aa63c38261ca9bca3c7c16ed;p=thirdparty%2Fvalgrind.git

Darwin syswrap: 1st arg of posix_spawn can be NULL
---

diff --git a/coregrind/m_syswrap/syswrap-darwin.c b/coregrind/m_syswrap/syswrap-darwin.c
index 1fa1de542..9d8ba22a3 100644
--- a/coregrind/m_syswrap/syswrap-darwin.c
+++ b/coregrind/m_syswrap/syswrap-darwin.c
@@ -3852,7 +3852,9 @@ PRE(posix_spawn)
 
    PRE_REG_READ5(int, "posix_spawn", vki_pid_t*, pid, char*, path,
                  void*, file_actions, char**, argv, char**, envp );
-   PRE_MEM_WRITE("posix_spawn(pid)", ARG1, sizeof(vki_pid_t) );
+   if (ARG1 != 0) {
+      PRE_MEM_WRITE("posix_spawn(pid)", ARG1, sizeof(vki_pid_t) );
+   }
    PRE_MEM_RASCIIZ("posix_spawn(path)", ARG2);
    // DDD: check file_actions
    if (ARG4 != 0)