So, link fails on all programs I've tried it on with

OPTLINK : Warning 9: Unknown Option : LIBPATH
hello.obj Offset 00000H Record Type 004C
  Error 138: Module or Dictionary corrupt

This fails on vers 2.099.0 and above. Versions below that compile and link with no problems.

What I can see first of all is the the very first byte of the .obj file is 0x4C whereas in earlier versions it is 0x80. Actually the entire beginning of the object files between versions is drastically different in content as well as size.

I haven't found any articles addressing this.

I'm using the same computer and same environment set up for versions 2.096 forward and see no problems until I hit 2.099.

Any help would be greatly appreciated.

Jim Korman

On Saturday, 23 April 2022 at 23:09:28 UTC, Jim Korman wrote:

OPTLINK : Warning 9: Unknown Option : LIBPATH
hello.obj Offset 00000H Record Type 004C
  Error 138: Module or Dictionary corrupt

2.099 was the first release to do use mscoff for 32 bit builds, which makes me think that the compiler using OPTLINK at all is probably a bug.

On Saturday, 23 April 2022 at 23:09:28 UTC, Jim Korman wrote:

Probably this:

https://dlang.org/changelog/2.099.0.html#fix18964

Try -m32omf in the new dmd build to get back to the old behavior optlink can understand.

Alternatively, changing your linker to the bundled lld-link or the microsoft link.exe should also work.

On Sunday, 24 April 2022 at 00:31:03 UTC, Adam Ruppe wrote:

Many thanks. That option worked. I hadn't tried it since it is listed as deprecated. Using lld-link also appears to work.

Jim Korman