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From: "superbem at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/57408] New: lambda, Variable length arrays, thread, internal compiler error: in expand_expr_real_1, at expr.c:9327
Date: Sat, 25 May 2013 02:53:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57408

            Bug ID: 57408
           Summary: lambda, Variable length arrays, thread, internal
                    compiler error: in expand_expr_real_1, at expr.c:9327
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: superbem at gmail dot com

#include <thread>
#include <cstdio>
using namespace std;

int main(){
    int y=2;
    float fa[2][y]; // thread compile fine if y were 2 hardcoded instead
    fa[0][0]=0.8;
    fa[0][1]=1.8;
    auto fx=[&](){
        for(int c=0;c<2;c++){ // thread compile fine if c<2 were c<1 instead
            printf("\n%f",fa[0][c]); // (1*) "internal compiler error: in
expand_expr_real_1, at expr.c:9327"
        }
    };
    fx(); // works fine everytime
    thread(fx).join(); //error (1*)
}