X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fgrub2%2Fenv.c;h=7eda0953fd4f5ce7d1cd6b6f20964a1f62f16bed;hp=3598927e0f295c5656e2fa93ee3192d32a18b92e;hb=8f09986340e602a69398b2866a265ea3f16609c6;hpb=01e104dfb79a09bc28f8c5fb65bfe44596c25161

diff --git a/discover/grub2/env.c b/discover/grub2/env.c
index 3598927..7eda095 100644
--- a/discover/grub2/env.c
+++ b/discover/grub2/env.c
@@ -257,6 +257,10 @@ int builtin_save_env(struct grub2_script *script,
 
 		name = argv[i];
 		value = script_env_get(script, name);
+		if (!value) {
+			pb_log("Saved unset environment variable %s!\n", name);
+			value = "";
+		}
 
 		update_env(buf + siglen, len - siglen, name, value);
 	}