https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69621
Bug ID: 69621
Summary: extern std::string used as reference template-argument
does not have [abi:cxx11] tag applied
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ed at catmur dot co.uk
Target Milestone: ---
#include <string>
template<std::string&> struct S { static void f(); };
extern std::string s;
void g() { S<s>::f(); }
asm emitted for g():
jmp S<s>::f()
Expected:
jmp S<s[abi:cxx11]>::f()
The latter will be emitted if there is a definition for the std::string in the
translation unit.
Broken versions: 5.1.0, 5.2.0, 5.3.0
Workaround: change S to take its template-parameter by pointer:
jmp S<&(s[abi:cxx11])>::f()
Original reporter:
http://stackoverflow.com/questions/35151104/stdstring-as-template-parameter-and-abi-tag-in-gcc-5
Possibly related: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66971
