hip-tests: write contract test artifacts to the temp dir, not cwd

projects/hip-tests/catch/contract/graph_debug/test_hip_graph_debug_contract.cc

@@ -8,6 +8,7 @@
 #include <cstdint>
 #include <cstdio>
 #include <fstream>
+#include <filesystem>
 #include <string>
 
 #include <hip/hip_runtime_api.h>
@@ -17,13 +18,14 @@
 namespace {
 constexpr size_t kByteCount = 64;
 
-// Builds a unique temporary file path for the exported dot graph so concurrent
-// test binaries do not collide on a shared filename.
+// Use the temp directory because installed test directories may be read-only.
 std::string UniqueDotPath() {
   int device = 0;
   HIP_CHECK(hipGetDevice(&device));
-  return std::string("hip_contract_graph_debug_") + std::to_string(device) + "_" +
-         std::to_string(static_cast<long long>(reinterpret_cast<intptr_t>(&device))) + ".dot";
+  return (std::filesystem::temp_directory_path() /
+          (std::string("hip_contract_graph_debug_") + std::to_string(device) + "_" +
+           std::to_string(static_cast<long long>(reinterpret_cast<intptr_t>(&device))) + ".dot"))
+      .string();
 }
 
 hipMemsetParams MakeByteMemsetParams(void* device_ptr, unsigned int value) {

projects/hip-tests/catch/contract/library_file/test_hip_library_file_contract.cc

@@ -8,8 +8,10 @@
 #include <hip/hiprtc.h>
 #include <hip_test_common.hh>
 
+#include <cstdint>
 #include <cstdio>
 #include <fstream>
+#include <filesystem>
 #include <string>
 #include <vector>
 
@@ -68,15 +70,20 @@ bool CompileLibrarySource(std::vector<char>& code) {
   return true;
 }
 
-// Compiles the library source and writes it to a unique per-test file in the
-// current working directory, returning the path. Skips when HIPRTC is
-// unavailable. The caller must remove the file when done.
+// Compile to a temp file: installed test directories may be read-only.
+// Returns the path; the caller must remove the file.
 std::string WriteCodeObjectFile(const char* suffix) {
   std::vector<char> code;
   if (!CompileLibrarySource(code)) {
     HIP_SKIP_TEST("HIPRTC compilation is not supported by this device/runtime path.");
   }
-  const std::string path = std::string("hip-contract-library-file-") + suffix + ".code";
+  // Add an address token to reduce collisions in the shared temp directory.
+  const std::string token =
+      std::to_string(static_cast<long long>(reinterpret_cast<intptr_t>(&code)));
+  const std::string path =
+      (std::filesystem::temp_directory_path() /
+       (std::string("hip-contract-library-file-") + suffix + "-" + token + ".code"))
+          .string();
   std::ofstream out(path, std::ios::binary);
   REQUIRE(out.is_open());
   out.write(code.data(), static_cast<std::streamsize>(code.size()));