cgit

commit 25c84326deff579d5de4b880f9dca2690bdc8569

Author: Lars Hjemli <hjemli@gmail.com>

Be prepared for empty repositories

Before this patch, cgit would segfault on repositories with no refs.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

 cgit.c | 10 +++++++---
 ui-shared.c | 3 ++-


diff --git a/cgit.c b/cgit.c
index 87950858a267f61433486fc32c9adbb8dda6e29a..cefeddfa12fb30d1c2711a79919aebb183ed5382 100644
--- a/cgit.c
+++ b/cgit.c
@@ -207,15 +207,19 @@
 char *find_default_branch(struct cgit_repo *repo)
 {
 	struct refmatch info;
+	char *ref;
 
 	info.req_ref = repo->defbranch;
 	info.first_ref = NULL;
 	info.match = 0;
 	for_each_branch_ref(find_current_ref, &info);
 	if (info.match)
-		return info.req_ref;
+		ref = info.req_ref;
 	else
-		return info.first_ref;
+		ref = info.first_ref;
+	if (ref)
+		ref = xstrdup(ref);
+	return ref;
 }
 
 static int prepare_repo_cmd(struct cgit_context *ctx)
@@ -241,7 +245,7 @@ 	}
 	ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
 
 	if (!ctx->qry.head) {
-		ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
+		ctx->qry.head = find_default_branch(ctx->repo);
 		ctx->repo->defbranch = ctx->qry.head;
 	}
 




diff --git a/ui-shared.c b/ui-shared.c
index 209af6ee3acabfc77abc11dd641f2e5d09047ce7..4280a70432b0a3f7869f0a6ddfa132df0af829c7 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -518,7 +518,8 @@ 			url = fmt("%s/%s", url, ctx.qry.path);
 		html_hidden("url", url);
 	}
 
-	if (incl_head && strcmp(ctx.qry.head, ctx.repo->defbranch))
+	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
+	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 		html_hidden("h", ctx.qry.head);
 
 	if (ctx.qry.sha1)