posted                   

code:

---

#include <iostream>

class TestClass {
public:
  TestClass ();

private:
  double* testarray;
};


TestClass::TestClass () {
  testarray = new double[40];
}

int main (int argc, char** argv) {
  return 0;
}

---

code:

---

g++  -Wall -fPIC  -O2 -g -pg  -c -o Test.o Test.cc
g++ -Wall -fPIC  -O2 -g -pg   -pthread  Test.o  -o  blah

---

code:

---

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1218574944 (LWP 27213)]
0x0076e2c7 in _int_free () from /lib/tls/libc.so.6
(gdb) bt
#0  0x0076e2c7 in _int_free () from /lib/tls/libc.so.6
#1  0x0076d278 in free () from /lib/tls/libc.so.6
#2  0x007dac28 in _mcleanup () from /lib/tls/libc.so.6
#3  0x007268f3 in exit () from /lib/tls/libc.so.6
#4  0x007117fc in __libc_start_main () from /lib/tls/libc.so.6
#5  0x0804853d in _start ()

---

• Do not include iostream.
• Set the optimisation level to zero.
• Compile without the profiling option.
• Comment out the allocation of testarray.

Posts: 10645 | Registered: Jul 2004  |  IP: Logged | 

posted                   

quote:

---

Lots of asserts is why DNDEBUG made it so much faster.

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Posts: 10645 | Registered: Jul 2004  |  IP: Logged |