Do not change the working directory while setting up the parameterized
tests.  Test fixtures consistently use paths relative to the test
working directory, so changing it causes those paths to become invalid.
--- ../tests/test-spirv-reflect.cpp	2026-10-02 13:50:44.022764243 +0300
+++ ../tests/test-spirv-reflect.cpp	2026-10-02 13:51:38.809408446 +0300
@@ -79,11 +79,7 @@
   // case. Note that for parameterized tests, the specific parameter value is a
   // non-static member data
   static void SetUpTestCase() {
-    FILE* f = fopen("tests/glsl/built_in_format.spv", "r");
-    if (!f) {
-      posix_chdir("..");
-      f = fopen("tests/glsl/built_in_format.spv", "r");
-    }
+    FILE* f = fopen("../tests/glsl/built_in_format.spv", "r");
     EXPECT_NE(f, nullptr) << "Couldn't find test shaders!";
     if (f) {
       fclose(f);