diff options
Diffstat (limited to 'pango/opentype/hb-open-type-private.hh')
| -rw-r--r-- | pango/opentype/hb-open-type-private.hh | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/pango/opentype/hb-open-type-private.hh b/pango/opentype/hb-open-type-private.hh index ae8dbb62..b5118fc1 100644 --- a/pango/opentype/hb-open-type-private.hh +++ b/pango/opentype/hb-open-type-private.hh @@ -196,6 +196,26 @@ _hb_sanitize_check (SANITIZE_ARG_DEF, } static HB_GNUC_UNUSED inline bool +_hb_sanitize_array (SANITIZE_ARG_DEF, + const char *base, + unsigned int record_size, + unsigned int len) +{ + bool overflows = len >= ((unsigned int) -1) / record_size; + +#if HB_DEBUG + if (sanitize_depth < HB_DEBUG) \ + fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \ + base, + sanitize_depth, sanitize_depth, + base, base + (record_size * len), record_size, len, (unsigned long) record_size * len, + context->start, context->end, + !overflows ? "does not overflow" : "OVERFLOWS FAIL"); +#endif + return HB_LIKELY (!overflows) && _hb_sanitize_check (SANITIZE_ARG, base, record_size * len); +} + +static HB_GNUC_UNUSED inline bool _hb_sanitize_edit (SANITIZE_ARG_DEF, const char *base HB_GNUC_UNUSED, unsigned int len HB_GNUC_UNUSED) @@ -232,6 +252,8 @@ _hb_sanitize_edit (SANITIZE_ARG_DEF, /* TODO Optimize this if L is fixed (gcc magic) */ #define SANITIZE_MEM(B,L) HB_LIKELY (_hb_sanitize_check (SANITIZE_ARG, CONST_CHARP(B), (L))) +#define SANITIZE_ARRAY(A,S,L) HB_LIKELY (_hb_sanitize_array (SANITIZE_ARG, CONST_CHARP(A), S, L)) + #define NEUTER(Var, Val) \ (SANITIZE_OBJ (Var) && \ _hb_sanitize_edit (SANITIZE_ARG, CONST_CHARP(&(Var)), sizeof (Var)) && \ |