[Bug gcov-profile/88608] New: error: corrupted profile info: profile data is not flow-consistent for unrar sources

[aros at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88608

            Bug ID: 88608
           Summary: error: corrupted profile info: profile data is not
                    flow-consistent for unrar sources
           Product: gcc
           Version: 8.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: aros at gmx dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 45289
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45289&action=edit
Sources

I'm trying to compile unrar sources (
https://rarlab.com/rar/unrarsrc-5.6.8.tar.gz ) using -flto and
-fprofile-generate/use.

Here's what I get:

threadpool.cpp: In member function
‘ThreadPool::GetQueuedTask(ThreadPool::QueueEntry*)’:
threadpool.cpp:213:1: error: corrupted profile info: profile data is not
flow-consistent
 }
 ^
threadpool.cpp:213:1: error: corrupted profile info: number of executions for
edge 7-11 thought to be -4
threadpool.cpp:213:1: error: corrupted profile info: number of executions for
edge 7-8 thought to be 8272
threadpool.cpp: At top level:

make: *** [makefile:132: threadpool.o] Error 1
make: *** Waiting for unfinished jobs....
unpack.cpp: In member function ‘Unpack::MakeDecodeTables(unsigned char*,
DecodeTable*, unsigned int)’:
unpack.cpp:354:1: error: corrupted profile info: profile data is not
flow-consistent
 }
 ^
unpack.cpp:354:1: error: corrupted profile info: number of executions for edge
14-16 thought to be -9
unpack.cpp:354:1: error: corrupted profile info: number of executions for edge
14-15 thought to be 17391
unpack.cpp: At top level:

make: *** [makefile:132: unpack.o] Error 1

Run make to see the errors.

GCC: gcc-8.2.1-6.fc29.x86_64.
CPU: Intel Core i5 2500.
Linux: Fedora 29 64.