int main(int argc, const char **argv) {
  unsigned int res;
  return 0;
  if (__builtin_mul_overflow((unsigned int)0x0, (unsigned int)0x0, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x0, (unsigned int)0x7FFFFFFF,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x0, (unsigned int)0x80000000,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x1, (unsigned int)0x7FFFFFFF,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x1, (unsigned int)0x80000000,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x2, (unsigned int)0x3FFFFFFF,
                             &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x2, (unsigned int)0xC0000000,
                              &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x2, (unsigned int)0x7FFFFFFF,
                             &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x2, (unsigned int)0x80000000,
                              &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x4, (unsigned int)0x7FFFFFFF,
                              &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x4, (unsigned int)0x80000000,
                              &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x0F, (unsigned int)0x8, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x10000000, (unsigned int)0x8,
                             &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x10000000,
                              (unsigned int)0x10000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x7FFFFFFF, (unsigned int)0x0,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x7FFFFFFF, (unsigned int)0x1,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x7FFFFFFF, (unsigned int)0x2,
                             &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x7FFFFFFF, (unsigned int)0x4,
                              &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x7FFFFFFF,
                              (unsigned int)0x7FFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x7FFFFFFF,
                              (unsigned int)0x80000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x80000000, (unsigned int)0x0,
                             &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0x80000000, (unsigned int)0x1,
                             &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x80000000, (unsigned int)0x2,
                              &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x80000000,
                              (unsigned int)0x7FFFFFFF, &res)) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0x80000000,
                              (unsigned int)0x80000000, &res)) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0xFFFFFFFF, (unsigned int)0x0,
                             &res)) {
    return -1;
  }
  if (res != 0x0) {
    return -1;
  }
  if (__builtin_mul_overflow((unsigned int)0xFFFFFFFF, (unsigned int)0x1,
                             &res)) {
    return -1;
  }
  if (res != 0xFFFFFFFF) {
    return -1;
  }
  if (!__builtin_mul_overflow((unsigned int)0xFFFFFFFF,
                              (unsigned int)0xFFFFFFFF, &res)) {
    return -1;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
xor    %eax,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
xor    %eax,%eax
ret

LLVM IR (-O0):
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
ret i32 0
}

LLVM IR (-O2):
define i32 @main(i32 %0, i8** nocapture readnone %1) {
ret i32 0
}