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C++11 Inferring "auto" type fails for "vector" [message #997443]

Mon, 07 January 2013 09:34

Eclipse User

With "-std=c++11" added to discovery, CDT Juno fails to figure out "auto" type for vectors, while it works fine for other containers, from arrays to sets to maps etc:

Simple program below (create a C++ Project). Hover over auto's to see how the "i"s type if properly inferred, except for vector<>. The template param doesn't make difference, vector<int> or vector<string>

gcc++ 4.7.2, Juno SR1 (updating to latest nightly doesn't help). The program itself compiles fine.

Just a minor annoyance - since CDT doesn't know the proper type for the auto variable, things like code completion etc, won't work.

//////////////////////////////////////////////////////
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <string>

using namespace std;

int main() {

vector<string> v;
set<string> s;
map<string, int> m;
string sa[10];

for (auto i: v) {
cout << i;
}

for (auto i: sa) {
cout << i;
}

for (auto i: s) {
cout << i;
}

for (auto i: m) {
cout << i.first;
}

}

[Updated on: Mon, 07 January 2013 10:39] by Moderator

Re: C++11 Inferring "auto" type fails for "vector" [message #998178 is a reply to message #997443]

Wed, 09 January 2013 09:06

Eclipse User

OK,

the issue seems to have been fixed as of yesterday's nightly build. Applied it on 2 different PCs and both now correctly infer the "auto" declared variable.

Specify this repository: http://download.eclipse.org/tools/cdt/builds/juno/nightly and update

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