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* [Bug c/108926] New: No warning for same expression in chain of | or & ?
@ 2023-02-24 14:21 dcb314 at hotmail dot com
2023-02-24 14:22 ` [Bug c/108926] " dcb314 at hotmail dot com
2023-02-27 8:38 ` rguenth at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: dcb314 at hotmail dot com @ 2023-02-24 14:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108926
Bug ID: 108926
Summary: No warning for same expression in chain of | or & ?
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Static analyser cppcheck has the ability to produce a style warning
for the same identifier used multiple times in the same expression.
Two examples are
linux-6.2/drivers/spi/spi-sn-f-ospi.c:614:31: style: Same expression
'SPI_TX_OCTAL' found multiple times in chain of '|' operators.
[duplicateExpression]
Source code is
ctlr->mode_bits = SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL
| SPI_RX_DUAL | SPI_RX_QUAD | SPI_TX_OCTAL
| SPI_MODE_0 | SPI_MODE_1 | SPI_LSB_FIRST;
linux-6.2/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_thresh_marked_sample_test.c:68:10:
style: Same expression '0x3' found multiple times in chain of '&' operators.
[duplicateExpression]
If gcc had this ability, then two kernel bugs would be found easily.
I will check binutils and glibc.
This bug is related to 53357.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/108926] No warning for same expression in chain of | or & ?
2023-02-24 14:21 [Bug c/108926] New: No warning for same expression in chain of | or & ? dcb314 at hotmail dot com
@ 2023-02-24 14:22 ` dcb314 at hotmail dot com
2023-02-27 8:38 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: dcb314 at hotmail dot com @ 2023-02-24 14:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108926
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to David Binderman from comment #0)
> This bug is related to 53357.
Sorry. 63357.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c/108926] No warning for same expression in chain of | or & ?
2023-02-24 14:21 [Bug c/108926] New: No warning for same expression in chain of | or & ? dcb314 at hotmail dot com
2023-02-24 14:22 ` [Bug c/108926] " dcb314 at hotmail dot com
@ 2023-02-27 8:38 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-02-27 8:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108926
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Severity|normal |enhancement
Last reconfirmed| |2023-02-27
Keywords| |diagnostic
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=63357
Status|UNCONFIRMED |NEW
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-02-24 14:21 [Bug c/108926] New: No warning for same expression in chain of | or & ? dcb314 at hotmail dot com
2023-02-24 14:22 ` [Bug c/108926] " dcb314 at hotmail dot com
2023-02-27 8:38 ` rguenth at gcc dot gnu.org
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