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* [Bug c++/63606] Missing a warning for binding a reference member to a stack allocated parameter
2014-10-20 22:06 [Bug c++/63606] New: Missing a warning for binding a reference member to a stack allocated parameter bcmpinc at hotmail dot com
@ 2014-10-20 22:06 ` redi at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: redi at gcc dot gnu.org @ 2014-10-20 22:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63606
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
dup
*** This bug has been marked as a duplicate of bug 63181 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/63606] New: Missing a warning for binding a reference member to a stack allocated parameter
@ 2014-10-20 22:06 bcmpinc at hotmail dot com
2014-10-20 22:06 ` [Bug c++/63606] " redi at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: bcmpinc at hotmail dot com @ 2014-10-20 22:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63606
Bug ID: 63606
Summary: Missing a warning for binding a reference member to a
stack allocated parameter
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bcmpinc at hotmail dot com
The code below should produce a warning, as it binds a stack allocated
parameter to a reference member. However, gcc currently does not produce such a
warning.
The code is error prone as it will always result in a dangling reference: the
object being pointed to is destructed when the constructor returns. Similar
buggy code can accidentally be written when one forgets to insert the '&' to
pass-by-reference. Note that the clang compiler does emit a warning, named
-Wdangling-field, for the code below.
struct Bar {
int a;
};
struct Foo{
Foo(Bar arg) : bar(arg) {}
Bar & bar;
};
int main() {
Bar k;
Foo oops(k);
return 0;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-10-20 22:06 [Bug c++/63606] New: Missing a warning for binding a reference member to a stack allocated parameter bcmpinc at hotmail dot com
2014-10-20 22:06 ` [Bug c++/63606] " redi at gcc dot gnu.org
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