gdb debug issues

Hi Guys

I am trying to print out the value of a variable after a segmentation fault. However no matter what i try cannot get the values printed out. I have tried print XX, to no avail. The variables should all be in scope. I have also tried the print ZZ:XX where ZZ is the function name. I switched off all compiler optimisation trying absence of any command and also -O0. I cannot print anything out!

Here is the gdb output from running the program

Code:

Program received signal SIGSEGV, Segmentation fault. 0x0000000000411167 in R2MinImageCo () (gdb) bt #0 0x0000000000411167 in R2MinImageCo () #1 0x0000000000411bc5 in CalculatePairwiseEnergyNonBondedEnergyCell () #2 0x000000000040b30f in MonteCarloRunComb () #3 0x0000000000418892 in main () (gdb) info registers rax 0x65f1 26097 rbx 0x7 7 rcx 0x40366a161e4f7660 4627002310400112224 rdx 0x13a9b80 20618112 rsi 0x3 3 rdi 0x7fff297afd50 140733889314128 rbp 0x7fff29789220 0x7fff29789220 rsp 0x7fff297891d0 0x7fff297891d0 r8 0x7fff297afd50 140733889314128 r9 0xd13940 13711680 r10 0x192 402 r11 0x7 7 r12 0x8 8 r13 0x7fff297892b0 140733889155760 r14 0x40366a161e4f7660 4627002310400112224 r15 0xd0f930 13695280 rip 0x411167 0x411167 <R2MinImageCo(double***, int, int, double, double, double)+83> eflags 0x10283 [ CF SF IF RF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 fctrl 0x37f 895 fstat 0x0 0 ftag 0xffff 65535 fiseg 0x0 0 fioff 0x4137be 4274110 foseg 0x7fff 32767 fooff 0x297952b8 695816888 fop 0x1c9 457 mxcsr 0x1fa2 [ DE PE IM DM ZM OM UM PM ]

Now I wish to obtain a variable that is passed into R2MinImageCo() function. However I cannot seem to find any of these variables. I include the function prototype here:

double R2MinImageCo(double ***ptrBeadArray, int FinalBeadIndex, int InitialBeadIndex, double Xbox, double Ybox, double Zbox)

so I am trying

Code:

(gdb) print FinalBeadIndex No symbol "FinalBeadIndex" in current context. (gdb) print R2MinImageCo $1 = {<text variable, no debug info>} 0x411114 <R2MinImageCo(double***, int, int, double, double, double)> (gdb) print R2MinImageCo::FinalBeadIndex A syntax error in expression, near `::FinalBeadIndex'. (gdb) print 'R2MinImageCo::FinalBeadIndex' No symbol "R2MinImageCo::FinalBeadIndex" in current context. (gdb) print `R2MinImageCo::FinalBeadIndex` Invalid character '`' in expression. (gdb) print R2MinImageCo::xdiff A syntax error in expression, near `::xdiff'.

Any ideas how I can achieve these values to be outputted? Thanks!