Add WITH_BOOTSTRAP_TOOLS_{ASAN,UBSAN}
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Authored by arichardson on Apr 18 2026, 5:51 AM.

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Reviewers

markj
emaste
jhb

Summary

This allows building the bootstrap tools with sanitizers to catch
undefined behaviour or memory error triggered when building FreeBSD.

Diff Detail

Repository

rG FreeBSD src repository

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No Test Coverage

Build Status

Buildable 72312
Build 69195: arc lint + arc unit

Event Timeline

arichardson created this revision.Apr 18 2026, 5:51 AM

Herald added subscribers: imp, bdrewery. · View Herald TranscriptApr 18 2026, 5:51 AM

arichardson requested review of this revision.Apr 18 2026, 5:51 AM

Harbormaster completed remote builds in B72312: Diff 175814.Apr 18 2026, 5:51 AM

I tried applying this patch and building world on FreeBSD running recent main. I can see that MK_ASAN and MK_UBSAN are getting set properly, but if I trace process args during the bootstrap-tools phase, I can't see -fsanitize getting passed anywhere. Am I missing something?

In D56491#1293768, @markj wrote:

I tried applying this patch and building world on FreeBSD running recent main. I can see that MK_ASAN and MK_UBSAN are getting set properly, but if I trace process args during the bootstrap-tools phase, I can't see -fsanitize getting passed anywhere. Am I missing something?

It definitely used to work, looks like something must have changed since my last rebase. Will investigate.