Bug #79179 [NEW]: Segfault with autoloading interface

From: arne at arne-groskurth dot eu Operating system: Ubuntu 19.10 PHP version: 7.4.2 Package: Reproducible crash Bug Type: Bug Bug description:Segfault with autoloading interface Description: ------------ (gdb) run test.php Starting program: /home/arne/Downloads/php-7.4.2/sapi/cli/php test.php [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 65 ../sysdeps/x86_64/multiarch/strlen-avx2.S: File or directory not found. (gdb) bt #0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65 #1 0x0000555555bd57fa in zend_get_function_declaration (fptr=0x7fffffffa1c0) at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:568 #2 0x0000555555bd5e2d in emit_incompatible_method_error (error_level=64, error_verb=0x55555640d06b "must", child=0x7ffff5802908, parent=0x7fffffffa1c0, status=INHERITANCE_ERROR, unresolved_class=0x7ffff58029f0) at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:691 #3 0x0000555555bd5ff2 in emit_incompatible_method_error_or_warning (child=0x7ffff5802908, parent=0x7fffffffa1c0, status=INHERITANCE_ERROR, unresolved_class=0x7ffff58029f0, always_error=1 '\001') at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:724 #4 0x0000555555bdc283 in check_variance_obligation (zv=0x7ffff585c288) at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:2334 #5 0x0000555555b938b4 in zend_hash_apply (ht=0x7ffff5858900, apply_func=0x555555bdc15c <check_variance_obligation>) at /home/arne/Downloads/php-7.4.2/Zend/zend_hash.c:1812 #6 0x0000555555bdc4c9 in resolve_delayed_variance_obligations (ce=0x7ffff58029f0) at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:2381 #7 0x0000555555bdcafd in zend_do_link_class (ce=0x7ffff58029f0, lc_parent_name=0x7ffff586cb80) at /home/arne/Downloads/php-7.4.2/Zend/zend_inheritance.c:2509 #8 0x0000555555b43e3f in do_bind_class (lcname=0x7ffff585c4b0, lc_parent_name=0x7ffff586cb80) at /home/arne/Downloads/php-7.4.2/Zend/zend_compile.c:1090 #9 0x0000555555bf66d5 in ZEND_DECLARE_CLASS_SPEC_CONST_HANDLER () at /home/arne/Downloads/php-7.4.2/Zend/zend_vm_execute.h:4381 #10 0x0000555555c55da5 in execute_ex (ex=0x7ffff5813020) at /home/arne/Downloads/php-7.4.2/Zend/zend_vm_execute.h:54131 #11 0x0000555555c5a7fa in zend_execute (op_array=0x7ffff5882300, return_value=0x0) at /home/arne/Downloads/php-7.4.2/Zend/zend_vm_execute.h:57913 #12 0x0000555555b7a8fe in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/arne/Downloads/php-7.4.2/Zend/zend.c:1665 #13 0x0000555555ad8241 in php_execute_script (primary_file=0x7fffffffcbf0) at /home/arne/Downloads/php-7.4.2/main/main.c:2617 #14 0x0000555555c5d3c3 in do_cli (argc=2, argv=0x55555698b290) at /home/arne/Downloads/php-7.4.2/sapi/cli/php_cli.c:961 #15 0x0000555555c5e544 in main (argc=2, argv=0x55555698b290) at /home/arne/Downloads/php-7.4.2/sapi/cli/php_cli.c:1352 (gdb) Test script: --------------- <?php spl_autoload_register(function() { interface InterfaceB extends InterfaceA {} }); interface InterfaceA {} trait SomeTrait { abstract public function func(): ?InterfaceA; } class Foo { public function func(): ?InterfaceB {} } class Bar extends Foo { use SomeTrait; } -- Edit bug report at https://bugs.php.net/bug.php?id=79179&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79179&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79179&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79179&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79179&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79179&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79179&r=support Expected behavior: https://bugs.php.net/fix.php?id=79179&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79179&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79179&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79179&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79179&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79179&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79179&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79179&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79179&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79179&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79179&r=mysqlcfg