[clang] [clang-scan-deps] Fix check for empty `Compilation` (PR #75545)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Yaraslau (Yaraslaut)

<details>
<summary>Changes</summary>

Closes https://github.com/llvm/llvm-project/issues/64144

Instead of checking for `nullptr`  we need to ensure that `JobList` is not empty to proceed

---
Full diff: https://github.com/llvm/llvm-project/pull/75545.diff


1 Files Affected:

- (modified) clang/tools/clang-scan-deps/ClangScanDeps.cpp (+1-1) 


``````````diff
diff --git a/clang/tools/clang-scan-deps/ClangScanDeps.cpp b/clang/tools/clang-scan-deps/ClangScanDeps.cpp
index 75aa4ae97c618c..7253856f1a07b4 100644
--- a/clang/tools/clang-scan-deps/ClangScanDeps.cpp
+++ b/clang/tools/clang-scan-deps/ClangScanDeps.cpp
@@ -728,7 +728,7 @@ getCompilationDataBase(int argc, char **argv, std::string &ErrorMessage) {
                            *Diags);
   std::unique_ptr<driver::Compilation> C(
       TheDriver.BuildCompilation(CommandLine));
-  if (!C)
+  if (C->getJobs().empty())
     return nullptr;
 
   auto Cmd = C->getJobs().begin();

``````````

</details>


https://github.com/llvm/llvm-project/pull/75545