https://github.com/python/cpython/commit/b20722c300a78c38462081a3f1c45190b5434e71
commit: b20722c300a78c38462081a3f1c45190b5434e71
branch: main
author: Victor Stinner <[email protected]>
committer: vstinner <[email protected]>
date: 2025-12-09T17:03:13+01:00
summary:
gh-142447: Fix cast warning in pycore_backoff.h (#142465)
MAKE_VALUE_AND_BACKOFF() macro casts its result to uint16_t.
Add pycore_backoff.h header to test_cppext tests.
files:
M Include/internal/pycore_backoff.h
M Lib/test/test_cppext/extension.cpp
diff --git a/Include/internal/pycore_backoff.h
b/Include/internal/pycore_backoff.h
index 7f60eb495080ae..23ca7299e0d2bd 100644
--- a/Include/internal/pycore_backoff.h
+++ b/Include/internal/pycore_backoff.h
@@ -40,7 +40,7 @@ extern "C" {
#define MAX_VALUE 0x1FFF
#define MAKE_VALUE_AND_BACKOFF(value, backoff) \
- ((value << BACKOFF_BITS) | backoff)
+ ((uint16_t)(((value) << BACKOFF_BITS) | (backoff)))
// For previous backoff b we use value x such that
// x + 1 is near to 2**(2*b+1) and x + 1 is prime.
diff --git a/Lib/test/test_cppext/extension.cpp
b/Lib/test/test_cppext/extension.cpp
index 1affa176088d57..f95655eccded61 100644
--- a/Lib/test/test_cppext/extension.cpp
+++ b/Lib/test/test_cppext/extension.cpp
@@ -14,6 +14,7 @@
#ifdef TEST_INTERNAL_C_API
// gh-135906: Check for compiler warnings in the internal C API
+# include "internal/pycore_backoff.h"
# include "internal/pycore_frame.h"
#endif
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