Different behavior for profile

[Heromyth]

System information

• dub version: dub 1.25
• OS Platform and distribution: Linux Debian 4.9.144-3.1
• compiler version: dmd-2.096.0

Bug Description

The -b=profile does't work for Hunt. It works to add

"dflags": ["-profile", "-profile=gc"],

to dub.json.

How to reproduce?

git clone https://github.com/huntlabs/hunt.git
cd examples/configuration
dub run --compiler=dmd -a=x86_64 -b=profile

Logs

Performing "profile" build using dmd for x86_64.
hunt 1.6.11+commit.5.g3820899: building configuration "library"...
/home/tom/dmd2/linux/bin64/../../src/phobos/std/concurrency.d(2104,17): Warning: statement is not reachable
dmd failed with exit code 1.

[Geod24]

This is an upstream issue. -profile does some extra control flow checking, which results in the warning being triggered.
This issue is https://issues.dlang.org/show_bug.cgi?id=13165