Segfault on cout

[Samuel_M_1]

I'm compiling this very short program: 

#include <iostream>

using namespace std;

int main()
{
    size_t M = 500;
    size_t K = 2000;
    size_t N = 500;
    double A[M*K];
    double B[K*N];
    double C[M*N];
    cout << "sizeof C: " << sizeof(C) << "\n";
    return 0;
}

using this line: 

icpc example.cpp -o example

and it segfaults on the 'cout'.

This is my icpc verbose output: 

icpc -v example.cpp -o example
icpc version 14.0.0 (gcc version 4.2.1 compatibility)
/opt/intel/composer_xe_2013_sp1.0.074/bin/intel64/mcpcom    -_g -mP3OPT_inline_alloca -D__HONOR_STD -D__ICC=1400 -D__INTEL_COMPILER=1400 -D__INTEL_COMPILER_UPDATE=0 -D__BLOCKS__ -D__PTRDIFF_TYPE__=long "-D__SIZE_TYPE__=unsigned long" -D__WCHAR_TYPE__=int -D__WINT_TYPE__=int "-D__INTMAX_TYPE__=long int" "-D__UINTMAX_TYPE__=long unsigned int" -D__LONG_MAX__=9223372036854775807L -D__QMSPP_ -D__OPTIMIZE__ -D__NO_MATH_INLINES -D__NO_STRING_INLINES -D__GNUC_GNU_INLINE__ -D__GNUG__=4 -D__GNUC__=4 -D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=1 -D__clang__=1 -D__clang_patchlevel__=0 -D__clang_minor__=0 -D__clang_major__=6 -D__clang_version__=6.0 -D__APPLE_CC__=5226 -D__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__=1095 -D__LITTLE_ENDIAN__ -D__DYNAMIC__ -D__private_extern__=extern -D__LP64__ -D_LP64 -D_GNU_SOURCE=1 -D__DEPRECATED=1 -D__GXX_WEAK__=1 -D__GXX_ABI_VERSION=1002 -D__USER_LABEL_PREFIX__=_ -D__REGISTER_PREFIX__= -D__INTEL_RTTI__ -D__EXCEPTIONS=1 -D__x86_64 -D__x86_64__ "-_Acpu(x86_64)" "-_Amachine(x86_64)" -D_MT -D__INTEL_COMPILER_BUILD_DATE=20130716 -D__PIC__ -D__APPLE__ -D__MACH__ -D__pentium4 -D__pentium4__ -D__tune_pentium4__ -D__SSE2__ -D__SSE3__ -D__SSSE3__ -D__SSE__ -D__MMX__ -_k -_8 -_l -_D -_a -_b --gnu_version=421 -_W5 --gcc-extern-inline -p --bool -tused -x --multibyte_chars --blocks --array_section --simd --simd_func --clang_extensions --bool -mP1OPT_version=14.0-intel64 -mGLOB_diag_file=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpce4cc5z.diag -mGLOB_diag_use_message_catalog=FALSE -mP1OPT_print_version=FALSE -mCG_use_gas_got_workaround=F -mP2OPT_align_option_used=TRUE -mGLOB_gcc_version=421 "-mGLOB_options_string=-v -o example" -mGLOB_position_independent_code -mGLOB_preemption_model=1 -mGLOB_no_compact_unwind=TRUE -mGLOB_cxx_limited_range=FALSE -mCG_extend_parms=FALSE -mGLOB_compiler_bin_directory=/opt/intel/composer_xe_2013_sp1.0.074/bin/intel64 -mGLOB_as_output_backup_file_name=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpcLKDsBAas_.s -mIPOPT_activate -mIPOPT_lite -mGLOB_em64t -mGLOB_instruction_tuning=0x0 -mGLOB_product_id_code=0x22006d8f -mCG_bnl_movbe=T -mGLOB_extended_instructions=0x80 -mGLOB_advanced_optim=TRUE -mP3OPT_use_mspp_call_convention -mPGOPTI_value_profile_use=T -mP2OPT_il0_array_sections=TRUE -mP2OPT_hlo_level=2 -mP2OPT_hlo -mP2OPT_hpo_rtt_control=0 -mIPOPT_args_in_regs=0 -mP2OPT_disam_assume_nonstd_intent_in=FALSE -mGLOB_imf_mapping_library=/opt/intel/composer_xe_2013_sp1.0.074/bin/intel64/libiml_attr.dylib -mIPOPT_obj_output_file_name=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpce4cc5z.o -mIPOPT_whole_archive_fixup_file_name=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpcwarchBxiNAe -mGLOB_long_size_64 -mGLOB_routine_pointer_size_64 -mGLOB_driver_tempfile_name=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpctempfiletNPRI1 -mGLOB_os_target=GLOB_OS_TARGET_MACH -mGLOB_async_unwind_tables=TRUE -mGLOB_obj_output_file=/var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpce4cc5z.o -mGLOB_source_dialect=GLOB_SOURCE_DIALECT_C_PLUS_PLUS -mP1OPT_source_file_name=example.cpp -mGLOB_eh_linux example.cpp
#include "..." search starts here:
#include <...> search starts here:
 /opt/intel/composer_xe_2013_sp1.0.074/compiler/include/intel64
 /opt/intel/composer_xe_2013_sp1.0.074/compiler/include
 /usr/include/c++/4.2.1
 /usr/include/c++/4.2.1/backward
 /System/Library/Frameworks
 /Library/Frameworks
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/include
 /usr/local/include
 /usr/include
End of search list.
ld    -lcrt1.10.6.o -dynamic -arch x86_64 -weak_reference_mismatches non-weak -macosx_version_min 10.9.5 -no_compact_unwind -o example -L/opt/intel/composer_xe_2013_sp1.0.074/compiler/lib -L/usr/lib /var/folders/xy/3h85g6tx0797nr4zf6k8gttr0000gn/T/icpce4cc5z.o /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libimf.a /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libsvml.a /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libirng.a /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libipgo.a /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libdecimal.a -weak-lcilkrts -lstdc++ -lSystem /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libirc.a /opt/intel/composer_xe_2013_sp1.0.074/compiler/lib/libsvml.a /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/lib/darwin/libclang_rt.osx.a

I'm on Mac OS X 10.9.5 - can anyone explain why this would be happening?

[Samuel_M_1 · Accepted solution]

Nevermind, I guess it is just blowing out the stack as noted here: 

https://software.intel.com/en-us/articles/intel-fortran-compiler-increased-stack-usage-of-80-or-higher-compilers-causes-segmentation-fault

I'm exceeding the 8MB limit. A specific error message about that would be nice. 

[Shenghong_G_Intel]

yes...it is expected error as you defined very large stack variables arrays, which will lead to this error. You should also get same error with other compilers like GCC/Clang. This is the behavior of OS, so, it is impossible for compiler to report a specific error message. :)

On Linux, you can use "ulimit" to check the limitation settings.

Thanks,

Shenghong