[reactos] 26/33: [UCRT] No __declspec(spectre(nomitigation)) for GCC/Clang

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=47e3f49e5266ce9e4668bc...

commit 47e3f49e5266ce9e4668bc96140161877ed0ba41
Author:     Timo Kreuzer [e-mail]
AuthorDate: Mon Oct 14 00:08:12 2024 +0300
Commit:     Timo Kreuzer [e-mail]
CommitDate: Thu Jan 16 14:18:53 2025 +0200

[UCRT] No __declspec(spectre(nomitigation)) for GCC/Clang
---
 sdk/lib/ucrt/inc/corecrt_internal_stdio_output.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sdk/lib/ucrt/inc/corecrt_internal_stdio_output.h b/sdk/lib/ucrt/inc/corecrt_internal_stdio_output.h
index bb4d545d88c..6f9878a52cc 100644
--- a/sdk/lib/ucrt/inc/corecrt_internal_stdio_output.h
+++ b/sdk/lib/ucrt/inc/corecrt_internal_stdio_output.h
@@ -576,7 +576,10 @@ public:

// Instead of using an lfence mitigation, we can fill the table to a power of two,
     // then bitwise-and all values used to index into the array.
-    __declspec(spectre(nomitigation)) T const& operator[](size_t const index) const
+    #if defined(_MSC_VER) && !defined(__clang__)
+    __declspec(spectre(nomitigation))
+    #endif
+    T const& operator[](size_t const index) const
     {
         return m_array[index & mask];
     }