In my Visual Leak Detector output, some (not all) of the frames from my own code comes up with "file and line number not available":
0x000000000079B4E8 (File and line number not available): mymodule.dll!namespace1::Class1::Impl::Impl + 0x88 bytes
A similar question suggests that I might be missing my PDB files, but I set the environment variable DBGHELP_DBGOUT per this thread and it is reported that the PDB files are correctly resolved:
DBGHELP: mymodule - private symbols & lines
F:\Code\MyCompany\MyProduct\Debug\x64\mymodule.pdb
So why won't Visual Leak Detector give me file and line numbers for some frames?