Assertion Failure

[TheNitesWhoSay]

Assertion failed.

Git:
git clone -b mrdoc-failure https://github.com/TheNitesWhoSay/Antora-Test.git

Powershell:

PS C:\misc\source\Antora-Test> mrdocs doc/mrdocs.yml
Extracting declarations
Finalizing corpus
assertion failed: has_value() on line 846 in include\mrdocs/ADT/Optional.hpp
PLEASE submit a bug report to https://github.com/cppalliance/mrdocs/issues/ and include the crash backtrace.
Exception Code: 0x80000003
 #0 0x00007ff79def5e4b (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x185e4b)
 #1 0x00007ff79df5360a (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1e360a)
 #2 0x00007ff79df4df6b (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1ddf6b)
 #3 0x00007ff79df47e61 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1d7e61)
 #4 0x00007ff79debd360 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x14d360)
 #5 0x00007ff79debb4d4 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x14b4d4)
 #6 0x00007ff79de6ce87 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0xfce87)
 #7 0x00007ff79de76198 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x106198)
 #8 0x00007ff7a1237400 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x34c7400)
 #9 0x00007fffc8e0e8d7 (C:\Windows\System32\KERNEL32.DLL+0x2e8d7)
#10 0x00007fffc9cec53c (C:\Windows\SYSTEM32\ntdll.dll+0x8c53c)

PS C:\misc\source\Antora-Test> clang --version
clang version 19.1.1
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\LLVM\bin

--

Note that separately I was able to generate a very simple example with mrdoc: https://theniteswhosay.github.io/Antora-Test/project-name/reference.html

But the code I'm trying it on now is much more complicated & very meta-programming heavy so a failure is unsurprising; I'll see if I can isolate the issue further or work around them but thought I'd report this issue as-is to start.

[TheNitesWhoSay]

First issue was with this which I've isolated here.

mrdoc doesn't like the auto & returned here:

struct Bar
{
    int value = 0;

    constexpr auto & operator++() { ++value; return *this; } // returning Bar & works
};

mrdocs doc/mrdocs.yml
Extracting declarations
Finalizing corpus
assertion failed: has_value() on line 846 in include\mrdocs/ADT/Optional.hpp
PLEASE submit a bug report to https://github.com/cppalliance/mrdocs/issues/ and include the crash backtrace.
Exception Code: 0x80000003
 #0 0x00007ff749065e4b (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x185e4b)
 #1 0x00007ff7490c360a (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1e360a)
 #2 0x00007ff7490bdf6b (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1ddf6b)
 #3 0x00007ff7490b7e61 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x1d7e61)
 #4 0x00007ff74902d360 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x14d360)
 #5 0x00007ff74902b4d4 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x14b4d4)
 #6 0x00007ff748fdce87 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0xfce87)
 #7 0x00007ff748fe6198 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x106198)
 #8 0x00007ff74c3a7400 (C:\Program Files\MrDocs 0.8.0\bin\mrdocs.exe+0x34c7400)
 #9 0x00007fffc8e0e8d7 (C:\Windows\System32\KERNEL32.DLL+0x2e8d7)
#10 0x00007fffc9cec53c (C:\Windows\SYSTEM32\ntdll.dll+0x8c53c)

[TheNitesWhoSay]

^ it seems to be only the same type of issue isolated above, though repeated in a couple places, I'm able to fully workaround the issue for my purposes (using these changes) though mrdoc should probably be fixed for these auto returns in operator overloads.