[Bug c++/46188] -fipa-cp removes destructor call

["zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46188

--- Comment #5 from Zdenek Sojka <zsojka at seznam dot cz> 2010-10-27 10:30:35 UTC ---
Created attachment 22172
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22172
the second part of testcase

I used this file to complete your testcase. It defines remaining functions and
prints some debug output. (x86_86-pc-linux-gnu target)

gcc-4.5.2 (r165781)
$ g++ -O2 playground4.cxx playground_main.cxx && ./a.out 
pre-f()
Array<B>::do_something()
h(0x602030)
h((nil))
post-f()
h((nil))
h(0x602010)
h((nil))

$ g++ -O2 -fno-ipa-cp playground4.cxx playground_main.cxx && ./a.out 
pre-f()
Array<B>::do_something()
h((nil))
h(0x602030)
h((nil))
post-f()
h((nil))
h(0x602010)
h((nil))

gcc 4.6.0 (r165985)
$ g++ -O2 playground4.cxx playground_main.cxx && ./a.out 
pre-f()
Array<B>::do_something()
h((nil))
h(0x602030)
h((nil))
post-f()
h((nil))
h(0x602010)
h((nil))

For 4.5 -fipa-cp the output is different. I don't see anything obviously wrong
with the testcase, and valgrind doesn't anyreport any errors. But I am
certainly not an expert.

Apart from this:
#pragma interface
#pragma interface "subdir/objects.h"
    Use this directive in header files that define object classes, to save
space in most of the object files that use those classes.

It's not a header file and #pragma implementation is nowhere... I suppose the
testcase was reduced from preprocessed files.