Hi, this program SEGFAULTs
#include <algorithm> int main() { int numbers[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; const std::size_t nn = sizeof(numbers)/sizeof(int); int sum = 0; int f = 5; std::for_each(&numbers[0], &numbers[nn], [&] (int n) { sum += n * f; }); } Now, my assembly days are some 15 years past, but the disassembly is 0x08048424 <_ZZ4mainENK9__lambda0clEiz+0>: push %ebp 0x08048425 <_ZZ4mainENK9__lambda0clEiz+1>: mov %esp,%ebp 0x08048427 <_ZZ4mainENK9__lambda0clEiz+3>: mov 0x8(%ebp),%eax 0x0804842a <_ZZ4mainENK9__lambda0clEiz+6>: mov 0x4(%eax),%eax 0x0804842d <_ZZ4mainENK9__lambda0clEiz+9>: mov 0x8(%ebp),%edx 0x08048430 <_ZZ4mainENK9__lambda0clEiz+12>: mov 0x4(%edx),%edx 0x08048433 <_ZZ4mainENK9__lambda0clEiz+15>: mov (%edx),%ecx 0x08048435 <_ZZ4mainENK9__lambda0clEiz+17>: mov 0x8(%ebp),%edx 0x08048438 <_ZZ4mainENK9__lambda0clEiz+20>: mov (%edx),%edx 0x0804843a <_ZZ4mainENK9__lambda0clEiz+22>: mov (%edx),%edx 0x0804843c <_ZZ4mainENK9__lambda0clEiz+24>: imul 0xc(%ebp),%edx 0x08048440 <_ZZ4mainENK9__lambda0clEiz+28>: lea (%ecx,%edx,1),%edx => SEGFAULT 0x08048443 <_ZZ4mainENK9__lambda0clEiz+31>: mov %edx,(%eax) 0x08048445 <_ZZ4mainENK9__lambda0clEiz+33>: pop %ebp 0x08048446 <_ZZ4mainENK9__lambda0clEiz+34>: ret I have marked the segfault spot. I also find 0x0804843a suspicious, but then I don't even know how to print register values in gcc. Any pointers to where I should dig? I am completely new to gcc hacking, just dying to get lambda into gcc 4.5 :) P.S: Shouldn't gcc show the actual lambda function code ( sum+= f*c; ) instead of the assembly code in any case? Thanks for your help! -- Kind regards, Esben