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* [Bug c++/95180] New: Failure to reject invalid code with attempted redefinition of symbol with different linkage
@ 2020-05-17 20:36 gabravier at gmail dot com
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From: gabravier at gmail dot com @ 2020-05-17 20:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95180
Bug ID: 95180
Summary: Failure to reject invalid code with attempted
redefinition of symbol with different linkage
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
void g(int i)
{
extern int i;
}
`extern int i;` redefines the `i` parameter and is thus invalid (Clang also
rejects it). This is not warned about by `-std=c++20 -pedantic-errors` so I'll
assume this is a bug, rather than some part of GNU C++. Furthermore, GCC
correctly rejects
void g(int i)
{
int i;
}
, so this really looks like a bug to me.
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2020-05-17 20:36 [Bug c++/95180] New: Failure to reject invalid code with attempted redefinition of symbol with different linkage gabravier at gmail dot com
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