Limit the maximum recursion depth

Co-authored-by: Dmitry Atamanov <data-man@users.noreply.github.com>
ziglang · Oct 30, 2020 · bc605c0 · bc605c0
1 parent dc058e6
commit bc605c0
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/std/fmt.zig b/lib/std/fmt.zig
@@ -480,13 +480,16 @@ pub fn formatType(
                 return format(writer, "{}@{x}", .{ @typeName(@typeInfo(T).Pointer.child), @ptrToInt(value) });
             },
             .Slice => {
+                if (max_depth == 0) {
+                    return writer.writeAll("[ ... ]");
+                }
                 if (ptr_info.child == u8) {
                     return formatText(value, fmt, options, writer);
                 }
 
                 try writer.writeAll("[");
                 for (value) |elem, i| {
-                    try formatType(elem, fmt, options, writer, max_depth);
+                    try formatType(elem, fmt, options, writer, max_depth - 1);
                     if (i != value.len - 1) {
                         try writer.writeAll(", ");
                     }