https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83732
Bug ID: 83732
Summary: wrong warning about non-POD field
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stsp at users dot sourceforge.net
Target Milestone: ---
Created attachment 43055
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43055&action=edit
test-case
The attached test-case demonstrates the problem:
---
$ LC_ALL=C g++ -Wall pod.cpp
pod.cpp:11:16: warning: ignoring packed attribute because of unpacked non-POD
field 'ttt tst::a'
struct ttt a;
$ ./a.out
size1=5 size2=8
---
As can be seen from the output, the attribute was
actually not ignored. I actually think there are
no non-POD members, so the warning is spurious and
the resulting code is correct. And indeed, clang++
generates no such warning and the packing works fine
there too.
