This commit disallows the use of trailing positional arguments
after argument unpacking was used. The following calls are no
longer valid:
fn(...$array, $var);
fn(...$array1, $var, ...$array2);
However, all of the following continue to be valid:
fn($var, ...$array);
fn(...$array1, ...$array2);
fn($var, ...$array1, ...$array2);
The reason behind this change is a stack allocation issue pointed
out by Dmitry: As of PHP 5.5 the stack necessary for pushing
arguments is precomputed and preallocated, as such the individual
SEND opcodes no longer verify that there is enough stack space.
The unpacked arguments will occupy some of that preallocated
space and as such following positional arguments could write past
a stack page boundary.
An alternative resolution for this issue is to ensure that there
is enough space for the remaining arguments in the UNPACK opcode.
However making this allocation precise (rather than using a
conversative over-estimate) would require some effort. Given that
this particular aspect of the feature wasn't very popular in the
first place, it doesn't seem worth the effort.
Instead of storing the argument number in the znode of the parameter
list, store it in fcall->arg_num. This mainly cleans up the parameter
parsing code, which previously had to duplicate all rules (this
becomes more excessive as more features are added, e.g. named params
would already require a minimum of 14 rules...)
Instead of directly pushing the zend_function* onto the
function_call_stack, push this structure. This allows us to store
additional data on this stack.
* upstream/PHP-5.6: (399 commits)
Fixed issue #115 (path issue when using phar). Fixed issue #149 (Phar mount points not working with OPcache enabled).
Added tests for PHAR/OPCahce incompatibilities
Update NEWS
Fixed bug #65947 (basename is no more working after fgetcsv in certain situation)
Update NEWS
Fixed Bug #66043 (Segfault calling bind_param() on mysqli)
NEWS entry
NEWS entry
Fix bug #65946 - pdo_sql_parser.c permanently converts values bound to strings
bump API versions
Add a couple more test cases to parse_url() tests
fix missing change from 'tcp_socket' to the more common 'server'
fix many parallel test issues
Cleanup temp test file
Revert "Fixed issue #115 (path issue when using phar)."
Update LiteSpeed SAPI code to V6.4
Fixed typo in Makefile.frag
updated NEWS
Remove outdate codes, make it clearer, although just a bit..
Update NEWS
...
Conflicts:
Zend/zend_compile.h
