[libc] Fix file collision causing test flake

[michaelrj-google]

In patch #105293 tests for vfscanf were added, meant to be identical to
the fscanf tests. Unfortunately, the author forgot to rename the target
file causing an occasional test flake where one test writes to the file
while the other is trying to read it. This patch fixes the issue by
renaming the target test file for the vfscanf test.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Michael Jones (michaelrj-google)

Changes

In patch #105293 tests for vfscanf were added, meant to be identical to
the fscanf tests. Unfortunately, the author forgot to rename the target
file causing an occasional test flake where one test writes to the file
while the other is trying to read it. This patch fixes the issue by
renaming the target test file for the vfscanf test.

---

Full diff: https://github.com/llvm/llvm-project/pull/106119.diff

1 Files Affected:

• (modified) libc/test/src/stdio/vfscanf_test.cpp (+2-2)

diff --git a/libc/test/src/stdio/vfscanf_test.cpp b/libc/test/src/stdio/vfscanf_test.cpp
index 7a9cbf7f123880..fa4e27582375f8 100644
--- a/libc/test/src/stdio/vfscanf_test.cpp
+++ b/libc/test/src/stdio/vfscanf_test.cpp
@@ -43,8 +43,8 @@ static int call_vfscanf(::FILE *stream, const char *__restrict format, ...) {
   return ret;
 }
 
-TEST(LlvmLibcFScanfTest, WriteToFile) {
-  const char *FILENAME = "fscanf_output.test";
+TEST(LlvmLibcVFScanfTest, WriteToFile) {
+  const char *FILENAME = "vfscanf_output.test";
   auto FILE_PATH = libc_make_test_file_path(FILENAME);
   ::FILE *file = scanf_test::fopen(FILE_PATH, "w");
   ASSERT_FALSE(file == nullptr);