microsoft / microsoft/DirectXShaderCompiler
Internal Compiler error: calling method that modifies const object
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bug
hlsl-next
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- C++
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Description
Related to #4340.
// RUN: %dxc -T vs_6_0 %s | FileCheck %s
// Internal Compiler error: llvm::cast<X>() argument of incompatible type!
struct MyStruct {
int Idx;
void Set() {
Idx = 1;
}
} Obj;
void main()
{
Obj.Set();
}
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the provided HLSL snippet with the %dxc -T vs_6_0 command and FileCheck to reproduce the incompatible llvm::cast failure. Trace the compiler path for calling Set on the global object and add regression coverage; done means this input no longer produces an internal compiler error and the check passes.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100