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Windows: run-pass/test-runner-hides-main.rs triggers LLVM assert #10872

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vadimcn opened this issue Dec 9, 2013 · 3 comments
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Windows: run-pass/test-runner-hides-main.rs triggers LLVM assert #10872

vadimcn opened this issue Dec 9, 2013 · 3 comments
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I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-windows Operating system: Windows

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@vadimcn
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vadimcn commented Dec 9, 2013

Assertion failed: Section->Number != -1 && "Sections with relocations must be real!", file c:/NW/rust/src/llvm/lib/MC/WinCOFFObjectWriter.cpp, line 224

Note: this seems to be specific to LLVM integrated assembler. Compiling via external assembler, i.e. after set RUSTFLAGS=-Z no-integrated-as works fine.
@alexcrichton
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What do you mean by the LLVM integrated assembler working? There is no no-integrated-as option to the compiler, and as far as I know on Windows we always use g++ to compile LLVM-generated assembly (foo.s), so we should be always using an external assembler.

Also, was this a recent regression for you? I just ran this on my slightly-out-of-date windows VM, and the test compiled just fine for me.

@alexcrichton
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I talked with @vadimcn on IRC, and this is being opened as a placeholder issue for something that he's working on, so this can't have any external investigation right now.

@vadimcn vadimcn mentioned this issue Dec 9, 2013
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@alexcrichton alexcrichton mentioned this issue Feb 9, 2014
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@dguenther dguenther mentioned this issue Feb 11, 2014
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bors added a commit that referenced this issue Feb 12, 2014
@bors
auto merge of #12196 : dguenther/rust/fix-fourcc-example, r=alexcrichton
d394a48 
Cleans up a few issues with `fourcc`:
* Corrects the endianness in the docs example
* Removes `#[cfg(not(test))]` (bors might not build this on Windows. If the build fails, I'll re-add it)
* Adds a FIXME referencing the LLVM assert issue we encountered with bors builds on Windows (Same error as #10872)
@alexcrichton
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Closing as a dupe of #13793 (a little more descriptive)

@alexcrichton alexcrichton mentioned this issue Apr 27, 2014
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@huonw huonw mentioned this issue Jul 20, 2014
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klutzy added a commit to klutzy/rust that referenced this issue Aug 18, 2014
@klutzy
Remove workaround of rust-lang#13793/rust-lang#10872
4806746 
LLVM assertion error has been fixed recently:
http://llvm.org/bugs/show_bug.cgi?id=18993

Fixes rust-lang#13793
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I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-windows Operating system: Windows
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