Make formatted_string::parse_string() split up the string into chunks of

999 characters or less so that formatted_string::cprintf()'s character
buffer doesn't overflow.


git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2199 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 12 insertions, 0 deletions

diff --git a/crawl-ref/source/format.cc b/crawl-ref/source/format.cc
index 595d2a3f85..400f900dff 100644
--- a/crawl-ref/source/format.cc
+++ b/crawl-ref/source/format.cc
@@ -74,6 +74,18 @@ formatted_string formatted_string::parse_string(
         bool invert_colour = false;
         std::string::size_type endpos = std::string::npos;
 
+        // Break string up if it gets too big.
+        if (currs.size() >= 999)
+        {
+            fs.cprintf(currs.substr(0, 999));
+            if (currs.size() > 999)
+                currs = currs.substr(999);
+            else
+                currs.clear();
+            tag--;
+            continue;
+        }
+
         if (s[tag] != '<' || tag >= length - 2)
         {
             if (!masked)