Non-polymorphic methods can be modified from one request to an other due to recompilation or conditional declaration.
Fixes GH-8591
Co-authored-by: Oleg Stepanischev <Oleg.Stepanischev@tatar.ru>
Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mechanism where any indirect CALL/JMP must target
an ENDBR instruction or suffer #CP.
This commit adds IBT support for fiber:
1. Add endbr32/64 in assembly
2. Inform compiler jump_fcontext may return via indirect branch
Furthermore:
gcc support CET since v8.1 and set it to default since gcc 11. That is,
the ELF header of sapi/cli/php has a property named IBT. However, such
property is lost since PHP8.1 because the assembly introduced by Fiber.
This commit also fixes this.
Closes GH-8339
Signed-off-by: Chen, Hu <hu1.chen@intel.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>
Newly added dl() tests trigger an assertion in ZEND_RC_DEBUG builds. This change
disables zend_rc_debug to allows these tests to pass until this issue is
resolved.
Thanks to Côme Chilliet for reporting that mb_detect_encoding was not
detecting the desired text encoding for strings containing š or Ž.
These characters are used in Czech, Serbian, Croatian, Bosnian,
Macedonian, etc. names.
When stripping the namespace prefix, we can assume that this does not
contain any colons, while the rest of the name may contain colons.
Hence we must not use `strrchr()` but rather `strchr()` instead.
Closes GH-8543.
Extensions may (and do) write to stderr in mshutdown and similar. In
the best case, with the stderr stream closed, it's just swallowed.
However, some libraries will do things like try to detect color, and
these will outright fail and cause an error path to be taken.
Derick Rethans