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ICE with codegen-units=0 #32191

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tomaka opened this issue Mar 11, 2016 · 1 comment · Fixed by #32212
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ICE with codegen-units=0 #32191

tomaka opened this issue Mar 11, 2016 · 1 comment · Fixed by #32212
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I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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@tomaka
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tomaka commented Mar 11, 2016

Invoking Rustc with rustc -C codegen-units=0 foo.rs triggers an ICE:

error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/m
aster/CONTRIBUTING.md#bug-reports
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 0
', ../src/libcollections\vec.rs:1179
note: Run with `RUST_BACKTRACE=1` for a backtrace.

Probably easy to fix.
@steveklabnik steveklabnik added the I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ label Mar 11, 2016
Manishearth added a commit to Manishearth/rust that referenced this issue Mar 12, 2016
@Manishearth
Don't allow values for codegen-units less than 1 (fixes rust-lang#32191)
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@Manishearth Manishearth mentioned this issue Mar 12, 2016
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The actual ICE is from SharedCrateContext assuming that local_ccxs contains something. But it should always contain something, best to catch this early when constructing options.

Manishearth added a commit to Manishearth/rust that referenced this issue Mar 13, 2016
@Manishearth
Rollup merge of rust-lang#32212 - Manishearth:ice-cu, r=eddyb
d7f7ab9 
Don't allow values for codegen-units less than 1

r? @eddyb

fixes rust-lang#32191
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Don't allow values for codegen-units less than 1 Manishearth/rust
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@steveklabnik @tomaka @Manishearth