008+ prompt> ASAN:SIGSEGV
009+ =================================================================
010+ ==7364==ERROR: AddressSanitizer: SEGV on unknown address 0x7f2380820080 (pc 0x0000046f4604 bp 0x7ffc2a1f8c90 sp 0x7ffc2a1f82c0 T0)
011+ #0 0x46f4603 (/opt/php-src/sapi/phpdbg/phpdbg+0x46f4603)
012+ #1 0x4fc2d0e (/opt/php-src/sapi/phpdbg/phpdbg+0x4fc2d0e)
013+ #2 0x524d60c (/opt/php-src/sapi/phpdbg/phpdbg+0x524d60c)
014+ #3 0x451627e (/opt/php-src/sapi/phpdbg/phpdbg+0x451627e)
015+ #4 0x52155ba (/opt/php-src/sapi/phpdbg/phpdbg+0x52155ba)
016+ #5 0x531c7e3 (/opt/php-src/sapi/phpdbg/phpdbg+0x531c7e3)
017+ #6 0x531b590 (/opt/php-src/sapi/phpdbg/phpdbg+0x531b590)
018+ #7 0x523a5d7 (/opt/php-src/sapi/phpdbg/phpdbg+0x523a5d7)
019+ #8 0x51aff9e (/opt/php-src/sapi/phpdbg/phpdbg+0x51aff9e)
020+ #9 0x7f238587282f (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
021+ #10 0x45a5f8 (/opt/php-src/sapi/phpdbg/phpdbg+0x45a5f8)
022+
023+ AddressSanitizer can not provide additional info.
024+ ==7364==ABORTING
008- prompt> [Breaking on watchpoint $b]
009- Old value:
010- New value: Array ([0] => 1)
011- >00006: unset($b);
012- 00007: $b = 2;
013- 00008:
014- prompt> [Breaking on watchpoint $b]
015- Old value inaccessible or destroyed
016- New value:
017- >00007: $b = 2;
018- 00008:
019- prompt> [Breaking on watchpoint $b]
020- Old value:
021- New value: 2
022- >00008:
023- prompt> [$b has been removed, removing watchpoint recursively]
024- [Script ended normally]
025- prompt>