http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56304
Bug #: 56304
Summary: [C++1] ICE in get_expr_operands, at
tree-ssa-operands.c for template class, using lambda
with closure on member variable, also called by the
constructor
Classification: Unclassified
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: crill...@tiscali.it
This bug is similar to 56303, but gives a slightly different error message: in
get_expr_operands, at tree-ssa-operands.c. The differences from 56303 case are:
1) a function f() is called from the constructor
2) in f(), a reference to a member variable is created and passed to a lambda
So, the program is a C++11 program on GCC 4.7.2, targeting MinGW on Windows 7
64 bit. I've also checked that the same error is generated on GCC 4.7.1 on a
linux virtual machine (opensuse 12.2 64bit on VirtualBox, hosted by my Windows
7 64 bit operating system).
As requested on instructions, I have used the -Wall -Wextra
-fno-strict-aliasing -fwrapv options to better detect errors in code but that
didn't change the result. I also used -pedantic, idem. I used -save-temps to
save the ii file that I attach to this post.
The error is "get_expr_operands, at tree-ssa-operands.c".
I attach the .ii file generated by the compiler (4.7.2 on Windows 7 64bit).
The program is :
////////////////////////////////////
#include <algorithm>
#include <vector>
#include <set>
using namespace std;
template<class elements_it>
class my_iterator
{
public:
my_iterator(
elements_it elements_begin,
elements_it elements_end) :
elements_begin_(elements_begin),
elements_end_(elements_end),
elements_used(distance(elements_begin, elements_end))
{
f();
}
void f()
{
size_t &ii = i;
for_each(elements_begin_, elements_end_, [&](typename
elements_it::value_type)
{
if(elements_used[ii]) return;
g();
});
}
void g()
{
}
private:
elements_it elements_begin_;
elements_it elements_end_;
size_t i;
vector<int> elements_used;
};
int main(int, char **)
{
set<int> elements1 = { 1, 2, 3 };
my_iterator<set<int>::iterator> i1(begin(elements1), end(elements1));
}
////////////////////////////////////
I get the following compiler error:
>g++ -pedantic -Wall -Wextra -fno-strict-aliasing -fwrapv -save-temps --st
d=c++11 test_enumeration1.cpp -o test_enumeration1_gpp.exe
test_enumeration1.cpp: In lambda function:
test_enumeration1.cpp:50:1: internal compiler error: in get_expr_operands, at
tree-ssa-operands.c:1035
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
