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When a segmentation fault occurs when using swoole, please report it to the development team in time. You can use the gdb tool to get a copy of bt information. To use gdb tracking, you need to add the --enable-debug parameter when compiling swoole.
If gdb is not convenient, you can also provide a demo program that can be stably reproduced.
Open core dump
ulimit -c unlimited
Use gdb to view core dump information. The core file is generally in the current directory. If the operating system has processed it and placed the core dump file in another directory, please replace it with the corresponding path
gdb php core gdb php /tmp/core.4596
Enter bt under gdb to view the call stack information
(gdb)bt Program terminated with signal 11, Segmentation fault. #0 0x00007f1cdbe205e0 in swServer_onTimer (reactor=<value optimized out>, event=...) at /usr/local/php/swoole-swoole-1.5.9b/src/network/Server.c:92 92 serv->onTimer(serv, timer_node->interval); Missing separate debuginfos, use: debuginfo-install php-cli-5.3.3-22.el6.x86_64
Use the f command in gdb to view the code segment
(gdb)f 1 (gdb)f 0
If there is no function call stack information, it may be that the debug information has been removed during compilation. Please manually modify the Makefile in the swoole source directory and modify CFLAGS to
CFLAGS = -Wall -pthread -g -O0
Recommended learning: swoole video tutorial
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