[cling] Inject absolute address of lstat

This symbol may be in libc_nonshared.a where symbols are not found
automatically. See also upstream issue
llvm/llvm-project#61289. This fixes the
test DynamicLibraryManager/cached_realpath.C.

interpreter/cling/lib/Interpreter/IncrementalJIT.cpp

@@ -31,6 +31,10 @@
 #include <llvm/Support/TargetRegistry.h>
 #include <llvm/Target/TargetMachine.h>
 
+#ifdef __linux__
+#include <sys/stat.h>
+#endif
+
 using namespace llvm;
 using namespace llvm::jitlink;
 using namespace llvm::orc;
@@ -577,6 +581,18 @@ IncrementalJIT::IncrementalJIT(
 
   char LinkerPrefix = this->m_TM->createDataLayout().getGlobalPrefix();
 
+#if defined(__linux__) && defined(__GLIBC__)
+  // Inject lstat to pass test/DynamicLibraryManager/cached_realpath.C, it may
+  // be in libc_nonshared.a where symbols are not found automatically. See also
+  // upstream issue https://github.com/llvm/llvm-project/issues/61289.
+  SymbolMap LibcNonsharedSymbols;
+  LibcNonsharedSymbols[Jit->mangleAndIntern("lstat")] = JITEvaluatedSymbol(
+      static_cast<JITTargetAddress>(reinterpret_cast<uintptr_t>(&lstat)),
+      JITSymbolFlags::Exported);
+  cantFail(
+      Jit->getMainJITDylib().define(absoluteSymbols(LibcNonsharedSymbols)));
+#endif
+
   // Process symbol resolution
   auto HostProcessLookup
     = RTDynamicLibrarySearchGenerator::GetForCurrentProcess(LinkerPrefix,