1 files changed, 20 insertions, 0 deletions
diff --git a/src/spawn.c b/src/spawn.c
index 716bafa..b17ee58 100644
--- a/src/spawn.c
+++ b/src/spawn.c
@@ -22,6 +22,7 @@
 #include <signal.h>
 
 #include <glib.h>
+#include <glib/gprintf.h>
 
 #include <gmodule.h>
 
@@ -295,6 +296,25 @@ teco_state_execute_done(teco_machine_main_t *ctx, teco_string_t str, GError **er
 	if (!argv)
 		goto gerror;
 
+#if defined(__FreeBSD__) && __FreeBSD__ < 16
+	/*
+	 * FIXME: g_spawn_async_with_pipes() will internally call
+	 * posix_spawnp() which uses a tiny 4kb stack which can
+	 * easily result in memory corruption if the path does not
+	 * contain '/', ie. must be resolved against $PATH.
+	 * See also https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295991
+	 * As a workaround, only pass down absolute paths.
+	 */
+	gchar *program = g_find_program_in_path(argv[0]);
+	if (!program) {
+		g_set_error(error, TECO_ERROR, TECO_ERROR_FAILED,
+		            "Program \"%s\" not found", argv[0]);
+		goto gerror;
+	}
+	g_free(argv[0]);
+	argv[0] = program;
+#endif /* __FreeBSD__ < 16 */
+
 	envp = teco_qreg_table_get_environ(&teco_qreg_table_globals, error);
 	if (!envp)
 		goto gerror;