[Bug c++/60893] New: Unable to use link time optimizer with profiler

[dturnbull at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60893

            Bug ID: 60893
           Summary: Unable to use link time optimizer with profiler
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dturnbull at gmail dot com

The following works with gcc-4.8.2.
It fails with gcc-4.9.0-RC-20140411.

Using this simple main.cpp:

#include <iostream>
#include <vector>
#include <complex>
int main() {
  std::vector<std::complex<float> > data(10);
  std::cout << "Hello World.\n";
}

Attempt to compile and run as such:

rm main.gcda
g++-4.9 -o profiler main.cpp -flto -O3 -fprofile-generate
./profiler
g++-4.9 -o helloworld main.cpp -flto -O3 -fprofile-use
./helloworld

The linker error output is:

Assertion failed: (cfiStartsArray[i] != cfiStartsArray[i-1]), function parse,
file /SourceCache/ld64/ld64-236.4/src/ld/parsers/macho_relocatable_file.cpp,
line 1685.
0  0x10227e0e7  __assert_rtn + 144
1  0x1022a3759 
mach_o::relocatable::Parser<x86_64>::parse(mach_o::relocatable::ParserOptions
const&) + 3213
2  0x1022889e2  mach_o::relocatable::Parser<x86_64>::parse(unsigned char
const*, unsigned long long, char const*, long, ld::File::Ordinal,
mach_o::relocatable::ParserOptions const&) + 374
3  0x1022c8303  ld::tool::InputFiles::makeFile(Options::FileInfo const&, bool)
+ 651
4  0x1022c9ff9  ld::tool::InputFiles::parseWorkerThread() + 271
5  0x7fff84598899  _pthread_body + 138
6  0x7fff8459872a  _pthread_struct_init + 0