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Subject: [Bug c++/49372] Temporaries evaluated for arguments of a default constructors of array elements not destructed properly (?)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49372

--- Comment #1 from Johannes Schaub <schaub.johannes at googlemail dot com> 2011-06-11 13:46:46 UTC ---
To elaborate on it, I have the following weird behavior:

- GCC4.6 outputs nothing for the program (on my linux machine). That seems
definitely wrong in any case.
- GCC4.7 "4.7.0 20110517 (experimental)", using a mingw nightly build,
generates an executable that crashes when running:

[js@HOST2 cpp]$ ~/w64/bin/i686-w64-mingw32-g++ -std=c++0x -O1 -o a.exe
main1.cpp
[js@HOST2 cpp]$ wine ./a.exe
Cwine: Unhandled page fault on read access to 0x00000000 at address (nil)
(thread 0025), starting debugger...

- The same GCC4.7 when using -O2 does not crash and print "CCDD":

[js@HOST2 cpp]$ ~/w64/bin/i686-w64-mingw32-g++ -std=c++0x -O2 -o a.exe
main1.cpp
[js@HOST2 cpp]$ wine ./a.exe
fixme:ntoskrnl:KeInitializeSpinLock stub: 0x5477a4
C
C
D
D

I don't know precisely whether this is a problem with wine or a temporary
problem with that nightly build of GCC I was using. My apologies if GCC trunk
works differently!