diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | gawkapi.h | 6 |
2 files changed, 11 insertions, 0 deletions
@@ -1,5 +1,10 @@ 2016-06-27 Andrew J. Schorr <aschorr@telemetry-investments.com> + * gawkapi.h (awk_string): Add comment about the potential lack of + NUL-termination. + +2016-06-27 Andrew J. Schorr <aschorr@telemetry-investments.com> + * awk.h: Add a comment regarding the potential lack of NUL-termination for Node_val strings. @@ -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 */ |