Re: Segmentation Fault when trying to call zend_new_array.

Dear Ivan, Some suggestions: - Build your own copy of the PHP embed library using ./configure --enable-embed=shared or ./configure --enable-embed=static. Link against that. - If it doesn't work, get some already-working sample code for use of the PHP embed SAPI and modify it rather than starting from scratch. - If you are still struggling, run your test under gdb so you can get a stack trace when it segfaults. It's as simple as "gdb --args <CLI invocation here>". Make sure that both the PHP embed SAPI and your own test code were compiled with debug info enabled. Alex On Wed, Aug 26, 2020 at 9:29 AM Ivan Zanev <ivanzanev477@gmail.com> wrote: > Yes, it does. > > I recompiled php now with > > --configure --enable-embed=static > > and wrote a simple script: > > #include <stdlib.h> > #include <stdio.h> > > #include "sapi/embed/php_embed.h" > > int main(int argc, char *argv[]) { > php_embed_init(argc, argv); > > HashTable *ht = zend_new_array(15); > > return 0; > } > > Compiled with the following command: > > gcc -I./Zend -I. -I./TSRM -I./main Zend/*.c TSRM/TSRM.c test-embed.c -ldl > -lm -lphp7 -g > > The segmentation fault problem still occurs, when calling php_embed_init. > > Not sure if that's a problem of libphp7.so which I installed via apt or it > is something related to a missing piece in the test-embed.c script I wrote? > > On Tue, Aug 25, 2020 at 2:39 PM Levi Morrison <levi.morrison@datadoghq.com > > > wrote: > > > On Tue, Aug 25, 2020 at 5:31 AM Ivan Zanev <ivanzanev477@gmail.com> > wrote: > > > > > > Hello, > > > > > > I'm trying to learn a bit more about HashTable in PHP internally and > how > > > memory is allocated when generating arrays with various sizes. I > created > > a > > > simple C script that would call > > > > > > HashTable *ht = zend_new_array(15); > > > > > > However, when I compile the script with gcc, I get segmentation fault; > > gdb > > > tells that the problem is located within _emalloc_56, specifically: > > > > > > 2535 if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { > > > > > > That's how I compiled the script: > > > gcc -I./Zend -I. -I./TSRM -I./main Zend/*.c TSRM/TSRM.c test.c -ldl -lm > > -g > > > > > > For the configuration I used: > > > ./configure > > > > > > Could you please guide me in the right direction? Is there something I > > > should do before calling zend_new_array? > > > > > > Sincerely, > > > Ivan > > > > Does test.c include a main? If so you probably want to use > > the embed > > SAPI. If not then you probably want to build it as an extension. > > >