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-rw-r--r--gcc/ChangeLog5
-rw-r--r--gcc/basic-block.h3
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c68945b..6e6ac9c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-07 Bernhard Reutner-Fischer <aldot@gcc.gnu.org>
+
+ * basic-block.h (ENTRY_BLOCK, EXIT_BLOCK): Document that neither of
+ them is supposed to hold actual statements.
+
2009-06-06 Ian Lance Taylor <iant@google.com>
* doc/extend.texi (Attribute Syntax): Document that C++ labels on
diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index 901845a..72bdf5c 100644
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -491,7 +491,8 @@ extern bitmap_obstack reg_obstack;
#define BB_HEAD(B) (B)->il.rtl->head_
#define BB_END(B) (B)->il.rtl->end_
-/* Special block numbers [markers] for entry and exit. */
+/* Special block numbers [markers] for entry and exit.
+ Neither of them is supposed to hold actual statements. */
#define ENTRY_BLOCK (0)
#define EXIT_BLOCK (1)