Created attachment 1857122 [details]
A reproducer generated from stap-session.ii using creduce.

Description of problem:

When attempted to address the FTBFS issue of systemtap (rhbz2046015) a newer version of systemtap with the expected fix was was put into the koji build system.  All the architecture except armv7hl successfully built (https://koji.fedoraproject.org/koji/taskinfo?taskID=81941041).  The armv7hl builds failed with a number of errors similar to the following:

In file included from staptree.cxx:10:
staptree.h: In member function 'next_statement::~next_statement()':
staptree.h:841:8: error: pointer used after 'operator delete(void*, unsigned int)' [-Werror=use-after-free]
  841 | struct next_statement: public statement
      |        ^~~~~~~~~~~~~~
staptree.h:841:8: note: call to 'operator delete(void*, unsigned int)' here
staptree.h: In member function 'continue_statement::~continue_statement()':
staptree.h:834:8: error: pointer used after 'operator delete(void*, unsigned int)' [-Werror=use-after-free]
  834 | struct continue_statement: public statement
      |        ^~~~~~~~~~~~~~~~~~

Florian Weimer suggested it might be a similar issue to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104232

Applied creduce to that the original 2.8MB stap-session.ii file to create a much smaller stap-session.ii file that shows the issue.  The simplified example fails on armv7hl rahide but compiles fine on rawhide x86_64.

Version-Release number of selected component (if applicable):

gcc-c++-12.0.1-0.2.fc36.armv7hl

How reproducible:

Every time


Steps to Reproduce:
1. copy the stap-session.ii file attached to this bug
2. g++   -Wall -Werror  -O2  -c -o stap-session.o stap-session.ii 

Actual results:

$ g++   -Wall -Werror  -O2  -c -o stap-session.o stap-session.ii 
stap-session.ii: In destructor ‘virtual b::~b()’:
stap-session.ii:5:8: error: pointer used after ‘void operator delete(void*, unsigned int)’ [-Werror=use-after-free]
    5 | struct b : a {};
      |        ^
stap-session.ii:5:8: note: call to ‘void operator delete(void*, unsigned int)’ here
cc1plus: all warnings being treated as errors

Expected results:

No error compiling, the same as running on rawhide x86_64.
Additional info: