================
@@ -588,13 +622,58 @@ void DylibVerifier::visitSymbolInDylib(const Record &R,
SymbolContext &SymCtx) {
}
}
+ const bool IsLinkerSymbol = SymbolName.starts_with("$ld$");
+
+ if (R.isVerified()) {
+ // Check for unavailable symbols.
+ // This should only occur in the zippered case where we ignored
+ // availability until all headers have been parsed.
+ auto It = DeferredZipperedSymbols.find(SymCtx.SymbolName);
+ if (It == DeferredZipperedSymbols.end()) {
+ updateState(Result::Valid);
+ return;
+ }
+
+ ZipperedDeclSources Locs;
+ for (const ZipperedDeclSource &ZSource : It->second) {
+ if (ZSource.FA->Avail.isObsoleted()) {
+ updateState(Result::Ignore);
+ return;
+ }
+ if (ZSource.T.Arch != Ctx.Target.Arch)
+ continue;
+ Locs.emplace_back(ZSource);
+ }
+ assert(Locs.size() == 2 && "Expected two decls for zippered symbol");
----------------
cyndyishida wrote:
My thinking at this point is that the only kind of error is when every version
of the decl look unavailable (no decl at all/only one available decl are
handled separately). Because this check is handled after all CC1 invocations
have finished, any macro-guarded declarations should have been resolved and
show 2.
e.g.
```
#if defined(TARGET_OS_OSX) && TARGET_OS_OSX
extern int unavailableSymbol API_UNAVAILABLE(macos) ;
#else
extern int unavailableSymbol API_UNAVAILABLE(macCatalyst);
#endif
```
results in
```
warning: violations found for arm64-apple-macos13
/Users/cishida/Builds/llvm-build/tools/clang/test/InstallAPI/Output/diagnostics-zippered.test.tmp/System/Library/Frameworks/Mismatch.framework/Headers/Mismatch.h:16:5:
error: declaration 'unavailableSymbol' is marked unavailable, but symbol is
exported in dynamic library
16 | int unavailableSymbol API_UNAVAILABLE(macos) ;
| ^
warning: violations found for arm64-apple-ios16.0-macabi
/Users/cishida/Builds/llvm-build/tools/clang/test/InstallAPI/Output/diagnostics-zippered.test.tmp/System/Library/Frameworks/Mismatch.framework/Headers/Mismatch.h:18:5:
error: declaration 'unavailableSymbol' is marked unavailable, but symbol is
exported in dynamic library
18 | int unavailableSymbol API_UNAVAILABLE(macCatalyst);
| ^
```
Were you thinking of a different example?
https://github.com/llvm/llvm-project/pull/88205
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