[clang] Driver][SYCL] Address sanitizer and test issue (PR #121822)

[Tom Honermann via cfe-commits]

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@@ -32,7 +31,7 @@ void SYCLInstallationDetector::addSYCLIncludeArgs(
 
 // Unsupported options for SYCL device compilation.
 static ArrayRef<OptSpecifier> getUnsupportedOpts() {
-  return {
+  static std::vector<OptSpecifier> UnsupportedOpts = {
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tahonermann wrote:

Declaring the function `constexpr` wouldn't address the lifetime issue that is fixed by this change. The function is called at run-time, so the data backing the array reference needs to persist until run-time. 

https://github.com/llvm/llvm-project/pull/121822