gh-121040: Use __attribute__((fallthrough)) #121044
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Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses __attribute__((fallthrough)) if available. Fix warnings when using -Wimplicit-fallthrough compiler flag.
vstinner
requested review from
ericsnowcurrently,
corona10,
brettcannon,
ncoghlan,
warsaw,
gpshead,
tiran,
markshannon and
iritkatriel
as code owners
|
cc @sobolevn |
sobolevn
reviewed
Jun 26, 2024
Done. |
|
Maybe of interest to @nohlson. |
AlexWaygood
reviewed
Jun 26, 2024
No longer define __has_attribute() if it's not defined. Move also _Py__has_builtin() at the top of pyport.h.
ericsnowcurrently
approved these changes
Jun 26, 2024
|
I tested my change with See also the article about the flag: https://developers.redhat.com/blog/2017/03/10/wimplicit-fallthrough-in-gcc-7 |
mrahtz
pushed a commit
to mrahtz/cpython
that referenced
this pull request
Jun 30, 2024
Fix warnings when using -Wimplicit-fallthrough compiler flag. Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses __attribute__((fallthrough)) if available. Replace "fall through" comments with _Py_FALLTHROUGH. Add _Py__has_attribute() macro. No longer define __has_attribute() macro if it's not defined. Move also _Py__has_builtin() at the top of pyport.h. Co-Authored-By: Nikita Sobolev <[email protected]>
noahbkim
pushed a commit
to hudson-trading/cpython
that referenced
this pull request
Jul 11, 2024
Fix warnings when using -Wimplicit-fallthrough compiler flag. Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses __attribute__((fallthrough)) if available. Replace "fall through" comments with _Py_FALLTHROUGH. Add _Py__has_attribute() macro. No longer define __has_attribute() macro if it's not defined. Move also _Py__has_builtin() at the top of pyport.h. Co-Authored-By: Nikita Sobolev <[email protected]>
estyxx
pushed a commit
to estyxx/cpython
that referenced
this pull request
Jul 17, 2024
Fix warnings when using -Wimplicit-fallthrough compiler flag. Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses __attribute__((fallthrough)) if available. Replace "fall through" comments with _Py_FALLTHROUGH. Add _Py__has_attribute() macro. No longer define __has_attribute() macro if it's not defined. Move also _Py__has_builtin() at the top of pyport.h. Co-Authored-By: Nikita Sobolev <[email protected]>
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Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses attribute((fallthrough)) if available.
Fix warnings when using -Wimplicit-fallthrough compiler flag.