mirror of
https://github.com/ApfelTeeSaft/reactos.git
synced 2026-09-02 19:26:32 +00:00
Ahmed Arif
4c3d15abe6
llvm-mingw's static runtime (libc++, libmingwex, libc++abi, libunwind) references symbols the NT 5.2 export surface does not provide. Add a static library, linked into the Clang runtime chain below DLL_EXPORT_VERSION 0x601, providing: - C99 vsnprintf/snprintf on top of _vsnprintf/_vscprintf. - __imp_* aliases binding dllimport references to the static CRT definitions instead of ucrtbase import thunks, which collide with them (lld: "<sym> was replaced"). - K32EnumProcessModules, forwarded to psapi's EnumProcessModules. - The Win7 SRW lock and Vista condition variable surface, bound to the RTL implementation linked statically from rtl_vista. Modules get one self-contained, consistent synchronization implementation (ReactOS' lock layout is not Windows-compatible), no kernel32_vista.dll dependency, and stay runnable on any Windows version. Static SRW linking suggested by Timo Kreuzer. Address review feedback on the llvm-compat shims: sync_static.c now uses the proper SDK/NDK headers with WINAPI/NTAPI, imp_alias.h moved to sdk/include/reactos and fixes the msvcrtex slot decorations too, and a new InitOnceExecuteOnce shim lets us drop libkernel32_vista from the interface.
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* PROJECT: ReactOS SDK
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* LICENSE: MIT (https://spdx.org/licenses/MIT)
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* PURPOSE: C99 printf-family shims for llvm-mingw runtime libraries
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* COPYRIGHT: Copyright 2026 Ahmed Arif <[email protected]>
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*/
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#include <stdio.h>
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#include <stdarg.h>
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/* llvm-mingw's libc++ needs the C99 vsnprintf/snprintf contract, which msvcrt's _vsnprintf (aliased onto
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* these names by the crt headers) does not follow: undo the mapping and bridge over _vsnprintf/_vscprintf */
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#undef vsnprintf
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#undef snprintf
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int vsnprintf(char *buffer, size_t count, const char *format, va_list argptr)
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{
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va_list ap;
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int result;
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va_copy(ap, argptr);
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result = _vsnprintf(buffer, count, format, ap);
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va_end(ap);
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if (result >= 0 && (size_t)result < count)
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return result;
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/* Truncated: terminate and return the would-be length */
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if (count != 0)
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buffer[count - 1] = '\0';
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va_copy(ap, argptr);
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result = _vscprintf(format, ap);
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va_end(ap);
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return result;
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}
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int snprintf(char *buffer, size_t count, const char *format, ...)
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{
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va_list argptr;
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int result;
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va_start(argptr, format);
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result = vsnprintf(buffer, count, format, argptr);
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va_end(argptr);
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return result;
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}
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