[gawk-diffs] [SCM] gawk branch, feature/fixtype, updated. gawk-4.1.0-1865-g6e3f356

[Andrew J. Schorr]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=6e3f3560c1be80583b4045a627e483c572c895b3

commit 6e3f3560c1be80583b4045a627e483c572c895b3
Author: Andrew J. Schorr <address@hidden>
Date:   Mon Jun 27 20:43:08 2016 -0400

    Add comment to gawkapi.h about string termination.

diff --git a/ChangeLog b/ChangeLog
index 24dcaf3..16f7f18 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2016-06-27         Andrew J. Schorr     <address@hidden>
 
+       * gawkapi.h (awk_string): Add comment about the potential lack of
+       NUL-termination.
+
+2016-06-27         Andrew J. Schorr     <address@hidden>
+
        * awk.h: Add a comment regarding the potential lack of NUL-termination
        for Node_val strings.
 
diff --git a/gawkapi.h b/gawkapi.h
index f024460..975f82d 100644
--- a/gawkapi.h
+++ b/gawkapi.h
@@ -278,6 +278,12 @@ enum {
  * The API deals exclusively with regular chars; these strings may
  * be multibyte encoded in the current locale's encoding and character
  * set. Gawk will convert internally to wide characters if necessary.
+ *
+ * Note that the string may not be terminated with a '\0' character.
+ * In particular, this happens for field values $n where n > 0 and n < NF,
+ * since the string points directly into the $0 buffer. All other strings,
+ * including those created by extensions, should be NUL-terminated. In general
+ * though, extension code should not assume that the string is NUL-terminated!
  */
 typedef struct awk_string {
        char *str;      /* data */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog |    5 +++++
 gawkapi.h |    6 ++++++
 2 files changed, 11 insertions(+)


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