[reactos] 03/04: [UCRT] Add GCC compatible definition of _CRT_STDIO_INLINE

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a438d7c3b88d33bdb393e…
commit a438d7c3b88d33bdb393e3dc3eec3214d7acbf15
Author:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
AuthorDate: Sat Nov 9 19:19:52 2024 +0200
Commit:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
CommitDate: Thu Jan 30 11:30:32 2025 +0200
    [UCRT] Add GCC compatible definition of _CRT_STDIO_INLINE
    In C99 mode GCC emits global symbols for inline functions, as soon as the compilation
unit contains a declaration that marks the function as "extern". A number of
functions like printf are implicitly declared as extern by GCC, which seemingly cannot be
disabled. This would lead to the inline function being emitted as a global symbol in every
compilation unit. Using static inline prevents duplicate symbol errors.
---
 sdk/include/ucrt/corecrt_stdio_config.h | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/sdk/include/ucrt/corecrt_stdio_config.h
b/sdk/include/ucrt/corecrt_stdio_config.h
index 360a45824d6..cc4b410b525 100644
--- a/sdk/include/ucrt/corecrt_stdio_config.h
+++ b/sdk/include/ucrt/corecrt_stdio_config.h
@@ -23,7 +23,11 @@ _CRT_BEGIN_C_HEADER
     #undef _CRT_STDIO_INLINE
     #define _CRT_STDIO_INLINE
 #elif !defined _CRT_STDIO_INLINE
+  #if defined(__GNUC__)
+    #define _CRT_STDIO_INLINE static __inline
+  #else
     #define _CRT_STDIO_INLINE __inline
+  #endif
 #endif
 #if !defined RC_INVOKED // RC has no target architecture