[Issue 17960] New: [REG 2.077-rc1] A 192 bytes leak is created by the GC when `-unittest` is an option

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17960

          Issue ID: 17960
           Summary: [REG 2.077-rc1] A 192 bytes leak is created by the GC
                    when `-unittest` is an option
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: b2.temp at gmx.com

with DMD 2.077-rc1


--- a.d ---
void main(){}
-----------

dmd a.d -unittest && valgrind --leak-check=yes ./a

gives:

---
==23681== HEAP SUMMARY:
==23681==     in use at exit: 192 bytes in 1 blocks
==23681==   total heap usage: 109 allocs, 108 frees, 55,864 bytes allocated
==23681== 
==23681== LEAK SUMMARY:
==23681==    definitely lost: 0 bytes in 0 blocks
==23681==    indirectly lost: 0 bytes in 0 blocks
==23681==      possibly lost: 0 bytes in 0 blocks
==23681==    still reachable: 192 bytes in 1 blocks
==23681==         suppressed: 0 bytes in 0 blocks
==23681== Reachable blocks (those to which a pointer was found) are not shown.
==23681== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==23681== 
==23681== For counts of detected and suppressed errors, rerun with: -v
==23681== Use --track-origins=yes to see where uninitialised values come from
==23681== ERROR SUMMARY: 254 errors from 12 contexts (suppressed: 0 from 0)
---

The problem disappears without -unittest.

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