December 12, 2020
I made a cross build with LDC -g -gdwarf-4 -O0 -D_DEBUG, the app crash with a report include PC address 0x005e34a9.

Is there a way to find the source location for that PC address?

==4172==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x035dfcf0 at pc 0x005e34a9 bp 0x035dfa20 sp 0x035dfa1c
WRITE of size 8 at 0x035dfcf0 thread T0
    <empty stack>

Address 0x035dfcf0 is a wild pointer.
SUMMARY: AddressSanitizer: stack-buffer-overflow
Shadow bytes around the buggy address:
  0x306bbf40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbf50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbf60: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 04 f3
  0x306bbf70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbf80: 00 00 00 00 00 00 00 00 f1 f1 04 f3 00 00 00 00
=>0x306bbf90: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1[04]f3
  0x306bbfa0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbfb0: f1 f1 00 00 00 f2 f2 f2 f2 f2 00 00 00 00 00 00
  0x306bbfc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbfd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x306bbfe0: 00 f2 f2 f2 f2 f2 f2 f2 f2 f2 04 f2 00 00 f3 f3
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==4172==ABORTING
December 12, 2020
On Saturday, 12 December 2020 at 15:51:46 UTC, Calvin P wrote:
> I made a cross build with LDC -g -gdwarf-4 -O0 -D_DEBUG, the app crash with a report include PC address 0x005e34a9.
>
> [...]

Find the solution:

lldb-11 tests_curl
(lldb) target create "tests_curl"
Current executable set to 'tests_curl' (i686).
(lldb) image lookup --address 0x005e34a9
      Address: tests_curl[0x005e34a9] (tests_curl..text + 1975465)
      Summary: tests_curl`getinfo_offt + 1817 at getinfo.c
(lldb) q