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MSVC fails linking rustc in debug mode; too many codegen units #54830

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abonander opened this issue Oct 4, 2018 · 1 comment
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MSVC fails linking rustc in debug mode; too many codegen units #54830

abonander opened this issue Oct 4, 2018 · 1 comment

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@abonander
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abonander commented Oct 4, 2018 •
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Building rustc in debug mode with just debug=true in config.toml seems to generate a ridiculous number of codegen units. It fails with an error in linking:

note: LINK : fatal error LNK1189: library limit of 65535 objects exceeded

The command I was running:

x.py test src/test/compile-fail --stage 1 --test-args <irrelevant>

Setting codegen_units to 0 in config.toml fixes the problem, as that limits it to the number of cores in the machine.

cc @alexcrichton
@abonander
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Crap, duplicate of #53014

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@abonander