[Bug c++/90412] New: g++ suggest did you mean for namespace

[jg at jguk dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90412

            Bug ID: 90412
           Summary: g++ suggest did you mean for namespace
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jg at jguk dot org
  Target Milestone: ---

Could g++ suggest 'std::vector' when only 'vector' was typed?
Clang does. g++ trunk doesn't.



#include <vector>

typedef vector<int> myvec_t;

int main()
{
    myvec_t v;
}



#1 with x86-64 gcc (trunk)
<source>:3:9: error: 'vector' does not name a type
    3 | typedef vector<int> myvec_t;
      |         ^~~~~~
<source>: In function 'int main()':
<source>:7:5: error: 'myvec_t' was not declared in this scope

    7 |     myvec_t v;
      |     ^~~~~~~
Compiler returned: 1



Clang trunk does suggest :-

#1 with x86-64 clang (trunk)
<source>:3:9: error: no template named 'vector'; did you mean 'std::vector'?
typedef vector<int> myvec_t;
        ^~~~~~
        std::vector
/opt/compiler-explorer/gcc-8.3.0/lib/gcc/x86_64-linux-gnu/8.3.0/../../../../include/c++/8.3.0/bits/stl_vector.h:339:11:
note: 'std::vector' declared here
    class vector : protected _Vector_base<_Tp, _Alloc>
          ^
1 error generated.
Compiler returned: 1