008+ prompt> ASAN:DEADLYSIGNAL
009+ =================================================================
010+ ==269166==ERROR: AddressSanitizer: SEGV on unknown address 0x7fc94d868b48 (pc 0x000001dd00a1 bp 0x0ff929b0d169 sp 0x7ffd2426e5b0 T0)
011+ ==269166==The signal is caused by a WRITE memory access.
012+ #0 0x1dd00a0 (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1dd00a0)
013+ #1 0x1efd444 (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1efd444)
014+ #2 0x1aca352 (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1aca352)
015+ #3 0x1ee774b (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1ee774b)
016+ #4 0x1f422cf (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1f422cf)
017+ #5 0x1ef7529 (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1ef7529)
018+ #6 0x1ecd73b (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1ecd73b)
019+ #7 0x7fc952bec0b2 (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
008- prompt> [Breaking on watchpoint $a[0]]
009- Old value: 1
010- New value: 2
011- >00008: $a = [0 => 3, 1 => 4];
012- 00009:
013- prompt> [Breaking on watchpoint $a[0]]
014- Old value: 2
015- New value: 3
016- >00009:
017- prompt> [$a[0] has been removed, removing watchpoint]
018- [Script ended normally]
019- prompt>
020+ #8 0x444e6d (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x444e6d)
021+
022+ AddressSanitizer can not provide additional info.
023+ SUMMARY: AddressSanitizer: SEGV (/home/tunguyen/Downloads/php-src-php-7.2.11/sapi/phpdbg/phpdbg+0x1dd00a0)
024+ ==269166==ABORTING