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[3.13] gh-124609: Fix _Py_ThreadId for Windows builds using MinGW (GH-124663) #124698

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Merged
merged 1 commit into from
Sep 27, 2024
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[3.13] gh-124609: Fix _Py_ThreadId for Windows builds using MinGW (GH-124663) #124698

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4 changes: 4 additions & 0 deletions Include/Python.h
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@
# include <intrin.h> // __readgsqword()
#endif

#if defined(Py_GIL_DISABLED) && defined(__MINGW32__)
# include <intrin.h> // __readgsqword()
#endif

// Include Python header files
#include "pyport.h"
#include "pymacro.h"
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6 changes: 6 additions & 0 deletions Include/object.h
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Expand Up @@ -247,6 +247,12 @@ _Py_ThreadId(void)
tid = __readfsdword(24);
#elif defined(_MSC_VER) && defined(_M_ARM64)
tid = __getReg(18);
#elif defined(__MINGW32__) && defined(_M_X64)
tid = __readgsqword(48);
#elif defined(__MINGW32__) && defined(_M_IX86)
tid = __readfsdword(24);
#elif defined(__MINGW32__) && defined(_M_ARM64)
tid = __getReg(18);
#elif defined(__i386__)
__asm__("movl %%gs:0, %0" : "=r" (tid)); // 32-bit always uses GS
#elif defined(__MACH__) && defined(__x86_64__)
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1 change: 1 addition & 0 deletions Misc/ACKS
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Expand Up @@ -1550,6 +1550,7 @@ Lisa Roach
Carl Robben
Ben Roberts
Mark Roberts
Tony Roberts
Andy Robinson
Jim Robinson
Yolanda Robla
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Windows/2024-09-27-13-40-25.gh-issue-124609.WaKk8G.rst
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@@ -0,0 +1 @@
Fix ``_Py_ThreadId`` for Windows builds using MinGW. Patch by Tony Roberts.
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