Bug 112309

Summary:	enhancement: extra flags to let -Wshadow skip if..else and lambda blocks
Product:	gcc	Reporter:	Joachim Wuttke <j.wuttke>
Component:	c++	Assignee:	Not yet assigned to anyone <unassigned>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	webrown.cpp
Priority:	P3	Keywords:	diagnostic
Version:	14.0
Target Milestone:	---
See Also:	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79328
Host:		Target:
Build:		Known to work:
Known to fail:		Last reconfirmed:
Bug Depends on:
Bug Blocks:	87403

Description Joachim Wuttke 2023-10-31 10:48:21 UTC

Suggestion: add a flag -Wnoshadow-ifelse to prevent -Wshadow from reporting shadowing in "else if" constructs like

if (auto* p = dynamic_cast<A>(x))
   ...
else if (auto* p = dynamic_cast<B>(x))
   ...
else if (auto* p = dynamic_cast<C>(x))
   ...


A similar approach (-Wnoshadow-lambda) could help to resolve https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79328.