| Issue |
146658
|
| Summary |
[lld] crash linking OSS https://github.com/Ranchero-Software/NetNewsWire
|
| Labels |
lld
|
| Assignees |
|
| Reporter |
johnno1962
|
Hi,
I'm seeing a crash linking this Open Source project https://github.com/Ranchero-Software/NetNewsWire during linking. The crash occurs here in `lld/MachO/SyntheticSections.cpp` building of main. `*reloc` is returned nil inside the loop. I'm working with the source at the moment, if you have any suggestions I could try or information I can gather let me know as I'd like to see if I can fix this.
```
void ObjCMethListSection::setUp() {
for (const ConcatInputSection *isec : inputs) {
uint32_t structSizeAndFlags = 0, structCount = 0;
readMethodListHeader(isec->data.data(), structSizeAndFlags, structCount);
uint32_t originalStructSize = structSizeAndFlags & structSizeMask;
// Method name is immediately after header
uint32_t methodNameOff = methodListHeaderSize;
// Loop through all methods, and ensure a selref for each of them exists.
while (methodNameOff < isec->data.size()) {
const Reloc *reloc = isec->getRelocAt(methodNameOff);
assert(reloc && "Relocation expected at method list name slot");
StringRef methname = reloc->getReferentString();
if (!ObjCSelRefsHelper::getSelRef(methname))
ObjCSelRefsHelper::makeSelRef(methname);
// Jump to method name offset in next struct
methodNameOff += originalStructSize;
}
}
}
```
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