diff options
Diffstat (limited to 'src/character.c')
| -rw-r--r-- | src/character.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/src/character.c b/src/character.c index 6a8b86d5d87..a03c081a716 100644 --- a/src/character.c +++ b/src/character.c @@ -35,6 +35,7 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ #include <sys/types.h> #include <setjmp.h> +#include <intprops.h> #include "lisp.h" #include "character.h" #include "buffer.h" @@ -404,7 +405,7 @@ strwidth (const char *str, EMACS_INT len) in *NCHARS and *NBYTES respectively. */ EMACS_INT -lisp_string_width (Lisp_Object string, int precision, +lisp_string_width (Lisp_Object string, EMACS_INT precision, EMACS_INT *nchars, EMACS_INT *nbytes) { EMACS_INT len = SCHARS (string); @@ -419,7 +420,7 @@ lisp_string_width (Lisp_Object string, int precision, while (i < len) { - int chars, bytes, thiswidth; + EMACS_INT chars, bytes, thiswidth; Lisp_Object val; int cmp_id; EMACS_INT ignore, end; @@ -437,7 +438,11 @@ lisp_string_width (Lisp_Object string, int precision, int c; if (multibyte) - c = STRING_CHAR_AND_LENGTH (str + i_byte, bytes); + { + int cbytes; + c = STRING_CHAR_AND_LENGTH (str + i_byte, cbytes); + bytes = cbytes; + } else c = str[i_byte], bytes = 1; chars = 1; @@ -455,8 +460,14 @@ lisp_string_width (Lisp_Object string, int precision, } } - if (precision > 0 - && (width + thiswidth > precision)) + if (precision <= 0) + { +#ifdef emacs + if (INT_ADD_OVERFLOW (width, thiswidth)) + string_overflow (); +#endif + } + else if (precision - width < thiswidth) { *nchars = i; *nbytes = i_byte; |