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| author | Alan Mackenzie <acm@muc.de> | 2019-03-02 18:23:34 +0000 |
|---|---|---|
| committer | Alan Mackenzie <acm@muc.de> | 2019-03-02 18:23:34 +0000 |
| commit | 954c9c5bc344cdd6b201c2260b306ec0999aff24 (patch) | |
| tree | 1f0a28cd728d91106ab7e8c2808c97340ac12ef5 /src/marker.c | |
| parent | d2b5f445c1a5f9e105eb65e10b28a40645516656 (diff) | |
| download | emacs-954c9c5bc344cdd6b201c2260b306ec0999aff24.tar.gz emacs-954c9c5bc344cdd6b201c2260b306ec0999aff24.tar.bz2 emacs-954c9c5bc344cdd6b201c2260b306ec0999aff24.zip | |
Check by eassert that a bytepos argument isn't in the middle of a character
* src/marker.c (buf_bytepos_to_charpos): Add an eassert to check that the
parameter bytepos is at the beginning of a character or EOB.
Diffstat (limited to 'src/marker.c')
| -rw-r--r-- | src/marker.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/marker.c b/src/marker.c index b58051a8c2b..0b2e1bf5c6b 100644 --- a/src/marker.c +++ b/src/marker.c @@ -332,6 +332,10 @@ buf_bytepos_to_charpos (struct buffer *b, ptrdiff_t bytepos) if (best_above == best_above_byte) return bytepos; + /* Check bytepos is not in the middle of a character. */ + eassert (bytepos >= BUF_Z_BYTE (b) + || CHAR_HEAD_P (BUF_FETCH_BYTE (b, bytepos))); + best_below = BEG; best_below_byte = BEG_BYTE; |