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-rw-r--r--build2/cc/common.hxx3
1 files changed, 2 insertions, 1 deletions
diff --git a/build2/cc/common.hxx b/build2/cc/common.hxx
index d809050..952e383 100644
--- a/build2/cc/common.hxx
+++ b/build2/cc/common.hxx
@@ -144,7 +144,8 @@ namespace build2
const target_type* x_mod; // Module target type (mxx{}), if any.
// Array of target types that are considered headers. Keep them in the
- // most likely to appear order and terminate with NULL.
+ // most likely to appear order with the "header header" first and
+ // terminated with NULL.
//
const target_type* const* x_hdr;