[libcxx-commits] [libcxx] [libc++][test] Migrate _BitInt probe to __BITINT_MAXWIDTH__ and fix latent test bugs (PR #203876)

[Xavier Roche via libcxx-commits]

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@@ -98,7 +99,7 @@ constexpr bool test() {
   test_implementation_defined_size<long long>();
   test_implementation_defined_size<unsigned long long>();
 
-#if TEST_HAS_EXTENSION(bit_int)
+#if TEST_HAS_BITINT
   // _BitInt(N) where digits + is_signed == sizeof * CHAR_BIT (no padding
   // bits) is accepted; other widths are rejected by the static_assert
   // inside the function body (see byteswap.verify.cpp).
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xroche wrote:

Agreed; fixed across comments in 206666

https://github.com/llvm/llvm-project/pull/203876