#3837 closed defect (invalid)
GCC 4.x - simulation issues
| Reported by: | Adrian Pop | Owned by: | Martin Sjölund |
|---|---|---|---|
| Priority: | high | Milestone: | |
| Component: | Build Environment | Version: | |
| Keywords: | Cc: |
Description (last modified by )
I have a model (unfortunately non-public) that simulates differently (correctly) with gcc 4.8 but fails with division by zero with: gcc 4.9, gcc 5.x and clang.
Change History (8)
comment:1 by , 9 years ago
comment:3 by , 9 years ago
clang (v 3.8.0) also has the same issues as gcc 5.3.1 but with gcc 4.8 it works.
update: gcc 4.9 does not work either!
comment:4 by , 9 years ago
| Description: | modified (diff) |
|---|---|
| Summary: | GCC 5.x vs GCC 4.x - simulation issues → GCC 4.x - simulation issues |
comment:6 by , 9 years ago
valgrind gave more info:
==2408== Memcheck, a memory error detector ==2408== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==2408== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==2408== Command: ./OneWind.Components.Rotor.Test.TestRigidRotor_OM ==2408== ==2408== brk segment overflow in thread #1: can't grow to 0x4c83000 ==2408== Conditional jump or move depends on uninitialised value(s) ==2408== at 0x98EC4E: omc_OneWind_Components_Rotor_Blade_Loadelement_Utilities_linearizeC (OneWind.Components.Rotor.Test.TestRigidRotor_OM_functions.c:227) ==2408== by 0xA427B4: OneWind_Components_Rotor_Test_TestRigidRotor_OM_eqFunction_3296 (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:41711) ==2408== by 0xCDE36B: OneWind_Components_Rotor_Test_TestRigidRotor_OM_functionInitialEquations (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:213368) ==2408== by 0x4EA34DD: symbolic_initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EA451F: initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E968F3: initializeModel (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E97A58: solver_main (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB835C: callSolver (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB88A7: startNonInteractiveSimulation (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EBAA65: _main_SimulationRuntime (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x98D92A: main (OneWind.Components.Rotor.Test.TestRigidRotor_OM.c:148960) ==2408== ==2408== Conditional jump or move depends on uninitialised value(s) ==2408== at 0xA42F65: OneWind_Components_Rotor_Test_TestRigidRotor_OM_eqFunction_3296 (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:41776) ==2408== by 0xCDE36B: OneWind_Components_Rotor_Test_TestRigidRotor_OM_functionInitialEquations (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:213368) ==2408== by 0x4EA34DD: symbolic_initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EA451F: initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E968F3: initializeModel (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E97A58: solver_main (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB835C: callSolver (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB88A7: startNonInteractiveSimulation (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EBAA65: _main_SimulationRuntime (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x98D92A: main (OneWind.Components.Rotor.Test.TestRigidRotor_OM.c:148960) ==2408== ==2408== Conditional jump or move depends on uninitialised value(s) ==2408== at 0xA4383E: OneWind_Components_Rotor_Test_TestRigidRotor_OM_eqFunction_3296 (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:41842) ==2408== by 0xCDE36B: OneWind_Components_Rotor_Test_TestRigidRotor_OM_functionInitialEquations (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:213368) ==2408== by 0x4EA34DD: symbolic_initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EA451F: initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E968F3: initializeModel (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E97A58: solver_main (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB835C: callSolver (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB88A7: startNonInteractiveSimulation (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EBAA65: _main_SimulationRuntime (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x98D92A: main (OneWind.Components.Rotor.Test.TestRigidRotor_OM.c:148960) ==2408== ==2408== Conditional jump or move depends on uninitialised value(s) ==2408== at 0xA4384C: OneWind_Components_Rotor_Test_TestRigidRotor_OM_eqFunction_3296 (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:41842) ==2408== by 0xCDE36B: OneWind_Components_Rotor_Test_TestRigidRotor_OM_functionInitialEquations (OneWind.Components.Rotor.Test.TestRigidRotor_OM_06inz.c:213368) ==2408== by 0x4EA34DD: symbolic_initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EA451F: initialization (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E968F3: initializeModel (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4E97A58: solver_main (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB835C: callSolver (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EB88A7: startNonInteractiveSimulation (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x4EBAA65: _main_SimulationRuntime (in /home/adrpo/om/build/lib/x86_64-linux-gnu/omc/libSimulationRuntimeC.so) ==2408== by 0x98D92A: main (OneWind.Components.Rotor.Test.TestRigidRotor_OM.c:148960) ==2408== assert | debug | Division by zero rotor.blade[1].loadElement[17].bem.cosAeroAlpha / (rotor.blade[1].loadElement[17].bem.ct * rotor.blade[1].loadElement[17].bem.sigma) assert | info | simulation terminated by an assertion at initialization ==2408== ==2408== HEAP SUMMARY: ==2408== in use at exit: 301,784,613 bytes in 7,584,997 blocks ==2408== total heap usage: 7,953,846 allocs, 368,849 frees, 354,547,062 bytes allocated ==2408== ==2408== LEAK SUMMARY: ==2408== definitely lost: 1,149,770 bytes in 46,780 blocks ==2408== indirectly lost: 300,513,253 bytes in 7,537,584 blocks ==2408== possibly lost: 26,632 bytes in 606 blocks ==2408== still reachable: 94,958 bytes in 27 blocks ==2408== suppressed: 0 bytes in 0 blocks ==2408== Rerun with --leak-check=full to see details of leaked memory ==2408== ==2408== For counts of detected and suppressed errors, rerun with: -v ==2408== Use --track-origins=yes to see where uninitialised values come from ==2408== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 2244 from 25)
so it seems something is fishy with the code we generate, I'll look into it more.
comment:7 by , 9 years ago
| Resolution: | → invalid |
|---|---|
| Status: | new → closed |
The problem is elsewhere in the compiler I'm trying to make a small public model with the error.
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I tried adding -fno-ipa-pure-const that we have for the compiler but it didn't help as anyway the simulation code is compiled with -O0.