diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-07-17 16:54:59 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-07-17 16:54:59 +0000 |
commit | ca2d6be10fb8c09af2f833e6898ddcd3a86928d1 (patch) | |
tree | ec7d80fa70593a0efa838ff46fab3b1ed112e0b3 /iseq.h | |
parent | 083c5896caa16f713ed109b188b93ba1115e7fb4 (diff) |
iseq.h: check range
* iseq.h (iseq_catch_table_bytes): check range and suppress a
warning.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'iseq.h')
-rw-r--r-- | iseq.h | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -76,8 +76,12 @@ PACKED_STRUCT_UNALIGNED(struct iseq_catch_table { static inline int iseq_catch_table_bytes(int n) { - return sizeof(struct iseq_catch_table) + - (n - 1) * sizeof(struct iseq_catch_table_entry); + enum { + catch_table_entries_max = (INT_MAX - sizeof(struct iseq_catch_table)) / sizeof(struct iseq_catch_table_entry) + }; + if (n > catch_table_entries_max) rb_fatal("too large iseq_catch_table - %d", n); + return (int)(sizeof(struct iseq_catch_table) + + (n - 1) * sizeof(struct iseq_catch_table_entry)); } #define INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE (512) |