Re: [PHP4BETA] ABR: Array bounds read in ZTS mode + explanation.

On Mon, 27 Dec 1999, Thies C. Arntzen wrote: > **** Purify instrumented bin/nsd (pid 22145) **** > ABR: Array bounds read (9440 times): > * This is occurring while in thread 10: > memcpy [rtlib.o] > zend_hash_copy [zend_hash.c:861] > compiler_globals_ctor [zend.c:247] > allocate_new_resource [TSRM.c:200] > ts_resource [TSRM.c:235] > php_ns_request_handler [aolserver.c:500] > * Reading 60 bytes from 0x264ec8 in the heap (44 bytes at 0x264ed8 illegal). > * Address 0x264ec8 is at the beginning of a malloc'd block of 16 bytes. > * This block was allocated from: > malloc [rtlib.o] > zend_hash_add_or_update [zend_hash.c:189] > zend_register_functions [zend_API.c:698] > zend_startup_builtin_functions [zend_builtin_functions.c:78] > zend_startup [zend.c:363] > > problem is : > > zend_API.c line 698 > if (zend_hash_add(target_function_table, ptr->fname, strlen(ptr->fname)+1, > &internal_function, sizeof(zend_internal_function), NULL) == FAILURE) { > unload=1; > break; > } > > zend.c line 238: > zend_hash_copy(compiler_globals->function_table, global_function_table, NULL, > &tmp_func, sizeof(zend_function)); > > > but: sizeof(zend_function) > sizeof(zend_internal_function) so we're > coying uninted memory (as purify tells us) in compiler_globals_ctor(). Well, that's one of the places that purify reports, correctly from its point of view, but that we really don't care about. Zeev -- Zeev Suraski <zeev@zend.com> http://www.zend.com/