posix_spawn-internal: Don't use vfork() on Solaris/SPARC.

Reported by Pádraig Brady <P@draigBrady.com> in
<https://lists.gnu.org/archive/html/coreutils/2025-11/msg00052.html>.

* lib/spawni.c (__spawni): Don't use vfork() on Solaris/SPARC.

diff --git a/ChangeLog b/ChangeLog
index 551a7acae00ebd0c0255894d6994fdcd8c80c9bf..e40604e420a4ad5740dd019e23d82227c4182390 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2025-11-06  Bruno Haible  <bruno@clisp.org>
+
+       posix_spawn-internal: Don't use vfork() on Solaris/SPARC.
+       Reported by Pádraig Brady <P@draigBrady.com> in
+       <https://lists.gnu.org/archive/html/coreutils/2025-11/msg00052.html>.
+       * lib/spawni.c (__spawni): Don't use vfork() on Solaris/SPARC.
+
 2025-11-06  Bruno Haible  <bruno@clisp.org>
 
        stdio-windows: Add fallback code for very old mingw without vasprintf.

diff --git a/lib/spawni.c b/lib/spawni.c
index a1f3f84a98bdd862978253db31191de85d3646f2..b99f8eeabbc956d27ce7a4f27149960eb75c0e09 100644 (file)
--- a/lib/spawni.c
+++ b/lib/spawni.c
@@ -882,7 +882,8 @@ __spawni (pid_t *pid, const char *file,
   (void) &flags;
 
   /* Generate the new process.  */
-#if HAVE_VFORK
+  /* Use of vfork() on Solaris/SPARC crashes; avoid it there.  */
+#if HAVE_VFORK && !(defined __sun && defined __sparc)
   if ((flags & POSIX_SPAWN_USEVFORK) != 0
       /* If no major work is done, allow using vfork.  Note that we
          might perform the path searching.  But this would be done by