Mark char* fields in struct cgit_page as const

Signed-off-by: John Keeping <john@keeping.me.uk>

2 files changed, 8 insertions, 7 deletions

diff --git a/cgit.h b/cgit.h
index fc3fc6f..7581cc1 100644
--- a/cgit.h
+++ b/cgit.h
@@ -245,13 +245,13 @@ struct cgit_page {
         time_t modified;
         time_t expires;
         size_t size;
-        char *mimetype;
-        char *charset;
-        char *filename;
-        char *etag;
-        char *title;
+        const char *mimetype;
+        const char *charset;
+        const char *filename;
+        const char *etag;
+        const char *title;
         int status;
-        char *statusmsg;
+        const char *statusmsg;
 };
 
 struct cgit_environment {
diff --git a/ui-plain.c b/ui-plain.c
index 4397a59..482d53a 100644
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -100,8 +100,9 @@ static int print_object(const unsigned char *sha1, const char *path)
         ctx.page.etag = sha1_to_hex(sha1);
         cgit_print_http_headers(&ctx);
         html_raw(buf, size);
+        /* If we allocated this, then casting away const is safe. */
         if (freemime)
-                free(ctx.page.mimetype);
+                free((char*) ctx.page.mimetype);
         return 1;
 }