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Blame SOURCES/0100-Don-t-use-dynamic-sized-arrays-since-we-don-t-build-.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Mon, 26 Jun 2017 12:42:57 -0400
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Subject: [PATCH] Don't use dynamic sized arrays since we don't build with
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 -std=c99
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---
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 grub-core/net/net.c | 17 ++++++++++++++---
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 1 file changed, 14 insertions(+), 3 deletions(-)
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diff --git a/grub-core/net/net.c b/grub-core/net/net.c
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index 4be228d95..fa3e29126 100644
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--- a/grub-core/net/net.c
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+++ b/grub-core/net/net.c
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@@ -1853,14 +1853,25 @@ grub_net_search_configfile (char *config)
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     {
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       /* By the Client UUID. */
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-      char client_uuid_var[sizeof ("net_") + grub_strlen (inf->name) +
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-                           sizeof ("_clientuuid") + 1];
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-      grub_snprintf (client_uuid_var, sizeof (client_uuid_var),
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+      char *client_uuid_var;
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+      grub_size_t client_uuid_var_size;
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+
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+      client_uuid_var_size = grub_snprintf (NULL, 0,
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+                     "net_%s_clientuuid", inf->name);
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+      if (client_uuid_var_size <= 0)
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+	continue;
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+      client_uuid_var_size += 1;
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+      client_uuid_var = grub_malloc(client_uuid_var_size);
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+      if (!client_uuid_var)
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+	continue;
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+      grub_snprintf (client_uuid_var, client_uuid_var_size,
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                      "net_%s_clientuuid", inf->name);
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       const char *client_uuid;
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       client_uuid = grub_env_get (client_uuid_var);
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+      grub_free(client_uuid_var);
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+
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       if (client_uuid)
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         {
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           grub_strcpy (suffix, client_uuid);