obstacks: simplifications

[bison.git] / src / system.h

diff --git a/src/system.h b/src/system.h
index a56c058a10360c7d867f350e859844bd7680b864..eba7845ee906c5418534fef1d28219c4d1187a68 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -173,6 +173,8 @@ typedef size_t uintptr_t;
 #define obstack_chunk_free  free
 #include <obstack.h>
 
+/* String-grow: append Str to Obs.  */
+
 #define obstack_sgrow(Obs, Str) \
   obstack_grow (Obs, Str, strlen (Str))
 
@@ -217,6 +219,11 @@ typedef size_t uintptr_t;
   } while (0)
 
 
+/* Append the ending 0, finish Obs, and return the string.  */
+
+# define obstack_finish0(Obs)                           \
+  (obstack_1grow (Obs, '\0'), (char *) obstack_finish (Obs))
+