Debugging a core dump
Make sure you have one first:
derick@whisky:~/docs/debugging-demo $ php gdb1/bug01180.php
Segmentation fault
☹
derick@whisky:~/docs/debugging-demo $ *ulimit -c 80000*
derick@whisky:~/docs/debugging-demo $ php gdb1/bug01180.php
Segmentation fault *(core dumped)*
Then start %gdb%:
gdb php core
Core was generated by `php gdb1/bug01180.php'.
Program terminated with signal *SIGSEGV, Segmentation fault.*
#0 __strcmp_sse2_unaligned ()
at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:32
32 ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: No such file or directory.
*(gdb)*
*The binary needs to match the core dump*