gprof produkuje puste wyjście

Question

Używam Ubuntu 16.10 i próbuję profilować program za pomocą gprof. Kompiluję się z flagą -pg, a program jest jednowątkowy. Rzeczywiste polecenia kompilacji to:

g++ -I. -std=c++11 -Wall -Wextra -O3 -pg -fPIC -Wno-unused-parameter -c -o build/obj/performance/stencil_application.o test/performance/stencil_application.cpp 
g++ -I. -std=c++11 -Wall -Wextra -O3 -pg -Wno-unused-parameter build/obj/performance/stencil_application.o -o build/test/performance/stencil_application 

Program trwa kilka sekund, aby zakończyć, kiedy go uruchomić, a plik o nazwie gmon.out jest produkowany. Jednak po uruchomieniu gprof ./build/test/performance/stencil_application, otrzymane wyjście nie zawiera liczb. Otrzymuję tylko nagłówki tabel i wyjaśnienia dla różnych pól, takich jak to:

Flat profile: 

Each sample counts as 0.01 seconds. 
    % cumulative self    self  total   
time seconds seconds calls Ts/call Ts/call name  

%   the percentage of the total running time of the 
time  program used by this function. 

cumulative a running sum of the number of seconds accounted 
seconds for by this function and those listed above it. 

self  the number of seconds accounted for by this 
seconds function alone. This is the major sort for this 
      listing. 

calls  the number of times this function was invoked, if 
      this function is profiled, else blank. 

self  the average number of milliseconds spent in this 
ms/call function per call, if this function is profiled, 
      else blank. 

total  the average number of milliseconds spent in this 
ms/call function and its descendents per call, if this 
      function is profiled, else blank. 

name  the name of the function. This is the minor sort 
      for this listing. The index shows the location of 
      the function in the gprof listing. If the index is 
      in parenthesis it shows where it would appear in 
      the gprof listing if it were to be printed. 

Copyright (C) 2012-2016 Free Software Foundation, Inc. 

Copying and distribution of this file, with or without modification, 
are permitted in any medium without royalty provided the copyright 
notice and this notice are preserved. 

        Call graph (explanation follows) 


granularity: each sample hit covers 2 byte(s) no time propagated 

index % time self children called  name 

This table describes the call tree of the program, and was sorted by 
the total amount of time spent in each function and its children. 

i tak dalej.

Próbowałem również skompilować bez -O3 i -g, ale z tym samym wynikiem. Czy ktoś wie, co jest nie tak?

Answer 1

Jak wskazano w komentarzu Tony Beta Lambda powyżej, jest to bug in gcc. Istnieją dwa możliwe obejścia problemu: przejście na wersję gcc-4.9 lub kompilacja z flagą --no-pie.