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ICE: LLVM Assertion S->getType()->isPtrOrPtrVectorTy() fails with raw/fat pointer cast #30615

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mbrubeck opened this issue Dec 29, 2015 · 0 comments
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ICE: LLVM Assertion S->getType()->isPtrOrPtrVectorTy() fails with raw/fat pointer cast #30615

mbrubeck opened this issue Dec 29, 2015 · 0 comments
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A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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@mbrubeck
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This code causes the compiler to crash:

fn main() { &0u8 as *const u8 as *const PartialEq<u8>; }

with this LLVM assertion failure:

rustc: /buildslave/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/llvm/lib/IR/Constants.cpp:1649: static llvm::Constant* llvm::ConstantExpr::getPointerCast(llvm::Constant*, llvm::Type*): Assertion `S->getType()->isPtrOrPtrVectorTy() && "Invalid cast"' failed.
Aborted (core dumped)
@mbrubeck mbrubeck added the I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ label Dec 29, 2015
@sanxiyn sanxiyn added the A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. label Mar 22, 2016
@sanxiyn sanxiyn mentioned this issue Mar 22, 2016
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eddyb added a commit to eddyb/rust that referenced this issue Mar 23, 2016
@eddyb
Rollup merge of rust-lang#32430 - sanxiyn:const-trans, r=arielb1
12e54bb 
Fix const trans

Fix rust-lang#30615.

The idea was that when there are N autoderefs, first do N-1 derefs and check for autoref. If there is autoref, done, if not, do one more deref. But when N is zero, doing one more deref is wrong.
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A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
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