https://issues.dlang.org/show_bug.cgi?id=22358
Richard Cattermole <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Richard Cattermole <[email protected]> --- ldc's address sanitizer has some extra information: foo done foo done AddressSanitizer:DEADLYSIGNAL ================================================================= ==28==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55f694a96fd9 bp 0x7f791bdfecf0 sp 0x7f791bdfec70 T3) ==28==The signal is caused by a READ memory access. ==28==Hint: address points to the zero page. #0 0x55f694a96fd9 in _d_dynamic_cast (/tmp/onlineapp-a6c082+0xebfd9) #1 0x55f6949d73d0 in foo /sandbox/onlineapp.d:9:5 #2 0x7f791f50c608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608) #3 0x7f791f2c9292 in clone (/lib/x86_64-linux-gnu/libc.so.6+0x122292) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/tmp/onlineapp-a6c082+0xebfd9) in _d_dynamic_cast Thread T3 created by T0 here: #0 0x55f694a27eba in pthread_create /home/vsts/work/1/s/compiler-rt/lib/asan/asan_interceptors.cpp:214:3 #1 0x55f6949d7813 in _Dmain /sandbox/onlineapp.d:27:9 #2 0x55f694a9771b in _D2rt6dmain212_d_run_main2UAAamPUQgZiZ6runAllMFZv (/tmp/onlineapp-a6c082+0xec71b) #3 0x55f694a9746d in _d_run_main (/tmp/onlineapp-a6c082+0xec46d) #4 0x55f6949d7924 in main /dlang/ldc-1.26.0/bin/../import/core/internal/entrypoint.d:42:17 #5 0x7f791f1ce0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2) ==28==ABORTING Error: /tmp/onlineapp-a6c082 failed with status: 1 Looks like something inside of thread_attachThis is doing a cast and not checking for null. --
