diff options
Diffstat (limited to 'src/buf.c')
| -rw-r--r-- | src/buf.c | 12 |
1 files changed, 7 insertions, 5 deletions
@@ -93,14 +93,16 @@ struct Buf *buf_linedir (struct Buf *buf, const char* filename, int lineno) { char *dst, *t; const char *src; + size_t tsz; - t = malloc(strlen("#line \"\"\n") + /* constant parts */ - 2 * strlen (filename) + /* filename with possibly all backslashes escaped */ - (int) (1 + log10 (abs (lineno))) + /* line number */ - 1); /* NUL */ + tsz = strlen("#line \"\"\n") + /* constant parts */ + 2 * strlen (filename) + /* filename with possibly all backslashes escaped */ + (int) (1 + log10 (abs (lineno))) + /* line number */ + 1; /* NUL */ + t = malloc(tsz); if (!t) flexfatal (_("Allocation of buffer for line directive failed")); - for (dst = t + sprintf (t, "#line %d \"", lineno), src = filename; *src; *dst++ = *src++) + for (dst = t + snprintf (t, tsz, "#line %d \"", lineno), src = filename; *src; *dst++ = *src++) if (*src == '\\') /* escape backslashes */ *dst++ = '\\'; *dst++ = '"'; |