...in ScopeDsymbol::search(Loc const&, Identifier*, int) ()

(gdb) where
#0  0x00005555556d2830 in ScopeDsymbol::search(Loc...

...instruction.
0x00005555556b67c0 in ParseTimeVisitor<ASTCodegen>::visit(Expression*) ()

(gdb) where
#0  0x00005555556b67c0 in ParseTimeVisitor<ASTCodegen>::visit...

...debugging symbols found in /usr/bin/dmd)
(gdb) r  -c -of.dub/build/argparse-test...

gdb --args ./your_program

and then it will tell you all the details you want...

...write;
---

imports/formatNNNNN/write.d
---
// empty file
---


(gdb) bt
#0  0x0000555555ac3fec in dmd.root.aav...

Try running gdb in follow fork mode, or run dub in verbose mode to get...

In gdb you can use `select-frame` and inspect the value of locals of the...

...atlas=, _pos=...) at ./src/objects.d:320

(gdb) bt
#0  objects.elf.this(g.pair...

...gdb) p atlas
$1 = (objects.atlasHandler *)
(gdb) p g.world
$2 = (worldmod.world_t *)
(gdb...

...at
src/dmd/lexer.d:177
177         }
(gdb) bt
#0  0x000000000084dc28 in dmd.lexer.Lexer...