Bug #78272 [Opn->Ver]: calling preg_match() before pcntl_fork() will freeze child process

Edit report at https://bugs.php.net/bug.php?id=78272&edit=1 ID: 78272 Updated by: nikic@php.net Reported by: dams@php.net Summary: calling preg_match() before pcntl_fork() will freeze child process -Status: Open +Status: Verified Type: Bug Package: PCRE related Operating System: OSX PHP Version: 7.3.7 Block user comment: N Private report: N New Comment: Reproduced on CI. Previous Comments: ------------------------------------------------------------------------ [2019-07-12 09:54:45] dams@php.net Here is my build sequence : git pull git checkout PHP-7.4; git pull make clean ./buildconf --force env YACC=brew --prefix bison/bin/bison ./configure \ --prefix="/usr/local/opt/php74" \ --with-config-file-path="/usr/local/etc/php71" \ --with-config-file-scan-dir=/usr/local/etc/phpng/conf.d \ --enable-mbstring \ --enable-tokenizer \ --with-curl=/usr/local/opt/curl/\ --enable-mbstring \ --with-sqlite3=/usr/local/Cellar/sqlite/3.28.0 \ --with-sodium=/usr/local/opt/libsodium \ --enable-json \ --enable-pcntl \ --disable-all gmake -jsysctl -n hw.logicalcpu_max gmake test I have the last OSX patches : System Version: macOS 10.14.5 (18F132) Kernel Version: Darwin 18.6.0 ------------------------------------------------------------------------ [2019-07-11 10:59:29] nikic@php.net I was not able to reproduce this issue on 7.4 on Darwin 16.0.0. I tried both NTS and ZTS builds. ------------------------------------------------------------------------ [2019-07-10 16:03:59] dams@php.net pcre.jit=0 fixes the problem, both with PHP 7.3 and 7.4. pcre.jit=1 behave the same with php 7.3 and 7.4. ------------------------------------------------------------------------ [2019-07-10 15:37:33] nikic@php.net And also whether it works if you set pcre.jit=0. ------------------------------------------------------------------------ [2019-07-10 15:37:09] nikic@php.net Is it possible for you test whether this works on 7.4 (has an updated PCRE2)? ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=78272 -- Edit this bug report at https://bugs.php.net/bug.php?id=78272&edit=1