Bug #81280 [Opn]: cli.prompt leads to segmentation fault

Edit report at https://bugs.php.net/bug.php?id=81280&edit=1 ID: 81280 User updated by: easteregg at verfriemelt dot org Reported by: easteregg at verfriemelt dot org Summary: cli.prompt leads to segmentation fault Status: Open Type: Bug Package: *General Issues Operating System: Debian GNU/Linux 11 (bullseye) PHP Version: 8.0.8 Block user comment: N Private report: N New Comment: i tried to play around with this issue some more, and noticed, i am not even able to input "»" in the interactive mode. some other cli tools, like for example psql ( postgresql client ) uses readline aswell, and i know for a fact, that those handle » just fine on windows and linux. Previous Comments: ------------------------------------------------------------------------ [2021-07-23 13:51:40] cmb@php.net FWIW, this works on Windows (except that setting the option via command line causes a assertion violation, because isalnum expects a number in range -1 to 255[1] while by default char gets promoted to int as if from type signed char[2]). And well, the documentation is meager; it does not even mention the meaning of the escape characters[3]. [1] <https://github.com/php/php-src/blob/php-7.4.21/sapi/cli/php_cli.c#L1252> [2] <https://docs.microsoft.com/en-us/cpp/cpp/char-wchar-t-char16-t-char32-t?view=msvc-160> [3] <https://github.com/php/php-src/blob/php-7.4.21/ext/readline/readline_cli.c#L143-L181> ------------------------------------------------------------------------ [2021-07-23 08:31:01] easteregg at verfriemelt dot org with -n it does not segfault but shows no prompt at all. gdb trace: Reading symbols from /usr/bin/php... Reading symbols from /usr/lib/debug/.build-id/b5/86e7d17af20d6d58923a72e13bcd4d4c2c9295.debug... (gdb) r Starting program: /usr/bin/php -d cli.prompt=» -a [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Interactive mode enabled Program received signal SIGSEGV, Segmentation fault. 0x00007ffff2fb66e5 in ?? () from /lib/x86_64-linux-gnu/libedit.so.2 (gdb) bt #0 0x00007ffff2fb66e5 in ?? () from /lib/x86_64-linux-gnu/libedit.so.2 #1 0x00007ffff2fb78db in ?? () from /lib/x86_64-linux-gnu/libedit.so.2 #2 0x00007ffff2fb6e57 in ?? () from /lib/x86_64-linux-gnu/libedit.so.2 #3 0x00007ffff2fb7258 in el_wgets () from /lib/x86_64-linux-gnu/libedit.so.2 #4 0x00007ffff2fb1d63 in el_gets () from /lib/x86_64-linux-gnu/libedit.so.2 #5 0x00007ffff2fc5486 in readline () from /lib/x86_64-linux-gnu/libedit.so.2 #6 0x00007ffff31528e4 in readline_shell_run () at ./ext/readline/readline_cli.c:624 #7 0x00005555558a25dd in do_cli (argc=4, argv=0x555555a35ed0) at ./sapi/cli/php_cli.c:947 #8 0x000055555566767b in main (argc=4, argv=0x555555a35ed0) at ./sapi/cli/php_cli.c:1336 (gdb) ------------------------------------------------------------------------ [2021-07-23 08:01:22] patrickallaert@php.net I can't reproduce this one, any chance to provide a gdb backtrace? Does it happen too with the following? $ php -n -d cli.prompt="»" -a ------------------------------------------------------------------------ [2021-07-23 06:18:07] easteregg at verfriemelt dot org sorry, i forgot to mention, that this will only occur with unicode characters, hence the example with "»" ------------------------------------------------------------------------ [2021-07-23 06:10:30] easteregg at verfriemelt dot org Description: ------------ i wanted to improve my interactive shellprompt... Test script: --------------- echo cli.prompt="»" > test.ini PHPRC=pwd/test.ini php -a Expected result: ---------------- Interactive mode enabled » Actual result: -------------- Interactive mode enabled [1] 2825134 segmentation fault (core dumped) php -a ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81280&edit=1