deque: check HAVE_STATEMENT_EXPR, tweaks from feedback

[ccan] / ccan / deque / _info

diff --git a/ccan/deque/_info b/ccan/deque/_info
index b1a47bbbb8e6f5d832f1b79f0a621562451e1aa3..63687b7421e96ef8e68336ea42e93318b7c788f2 100644 (file)
--- a/ccan/deque/_info
+++ b/ccan/deque/_info
@@ -16,7 +16,7 @@
  * Example:
  *     // Evaluates arithmetic expressions using Dijkstra's two-stack algorithm.
  *     // Original: http://algs4.cs.princeton.edu/13stacks/EvaluateDeluxe.java.html
- *     #define _XOPEN_SOURCE 700
+ *     #define _XOPEN_SOURCE 700 // only for getline(3) in this demo
  *     #include <stdio.h>
  *     #include <stdlib.h>
  *     #include <ctype.h>
@@ -122,6 +122,12 @@
  *
  * License: APACHE-2
  * Author: Dan Good <dan@dancancode.com>
+ *
+ * Ccanlint:
+ *     // uses statement expressions
+ *     // supported by gcc, clang, icc, and some others, but not msvc
+ *     // (see https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html)
+ *     objects_build_without_features FAIL
  */
 int main(int argc, char *argv[])
 {