| Issue |
154462
|
| Summary |
`parseSourceString` runs over input `StringRef`
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
SchrodingerZhu
|
Consider the following parsing code:
```c++
// MLIR
#include <llvm/Support/MemoryBuffer.h>
#include <llvm/Support/SourceMgr.h>
#include <mlir/Dialect/Arith/IR/Arith.h>
#include <mlir/Dialect/ControlFlow/IR/ControlFlow.h>
#include <mlir/Dialect/DLTI/DLTI.h>
#include <mlir/Dialect/Func/IR/FuncOps.h>
#include <mlir/Dialect/LLVMIR/LLVMDialect.h>
#include <mlir/Dialect/MemRef/IR/MemRef.h>
#include <mlir/Dialect/SCF/IR/SCF.h>
#include <mlir/Dialect/UB/IR/UBOps.h>
#include <mlir/IR/AsmState.h>
#include <mlir/IR/BuiltinAttributes.h>
#include <mlir/IR/BuiltinOps.h>
#include <mlir/IR/BuiltinTypes.h>
#include <mlir/IR/Diagnostics.h>
#include <mlir/IR/DialectRegistry.h>
#include <mlir/InitAllDialects.h>
#include <mlir/Interfaces/DataLayoutInterfaces.h>
#include <mlir/Parser/Parser.h>
#include <mlir/Support/LLVM.h>
#include <mlir/Support/LogicalResult.h>
#include <mlir/Target/LLVMIR/Import.h>
using namespace mlir;
const char *data = "" {} sadfkhjasdf";
int main() {
std::string_view sliced(data, 9);
// 1) Build a registry and MLIR context with required dialects.
DialectRegistry registry;
mlir::registerAllDialects(registry);
MLIRContext context(registry);
context.loadAllAvailableDialects();
// 2) Parse the incoming MLIR module from string.
#ifdef DO_COPY
llvm::SourceMgr sourceMgr;
auto buffer = llvm::MemoryBuffer::getMemBufferCopy(sliced);
sourceMgr.AddNewSourceBuffer(std::move(buffer), llvm::SMLoc());
OwningOpRef<ModuleOp> module = parseSourceFile<ModuleOp>(sourceMgr, &context);
#else
OwningOpRef<ModuleOp> module = parseSourceString<ModuleOp>(sliced, &context);
#endif
}
```
When compiled with `LLVM 20` with
```
clang++ main.cpp -lLLVM -lMLIR
```
The MLIR Asm Parser runs over the slice:
```
loc("-":1:11): error: custom op 'sadfkhjasdf' is unknown (tried 'builtin.sadfkhjasdf' as well)
```
with `DO_COPY`, the problem solves.
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