http://llvm.org/bugs/show_bug.cgi?id=6918
Summary: clang++: lazy instantiation issue?
Product: clang
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Blocks: 6916
This code compiles with g++, but not with clang++:
$ cat >test.cpp <<EOF
template <class Scalar>
inline bool equal(const Scalar &v, const Scalar &c)
{
return ABS(v-c);
}
template < class T >
inline T
ABS( T a )
{ return (0 < a) ? a : -a ; }
int main()
{
float a, b;
equal(a,b);
}
EOF
$ clang++ test.cpp
x.cpp:5:10: error: use of undeclared identifier 'ABS'
return ABS(v-c);
^
x.cpp:16:5: note: in instantiation of function template specialization
'equal<float>' requested here
equal(a,b);
^
2 diagnostics generated.
This occurs when building blender 2.49b:
/home/edwin/clangtests/blender-2.49b/intern/elbeem/intern/ntl_vector3dim.h:998:11:
error: use of undeclared identifier 'ABS'
return (ABS(v[0]-c[0]) +
^
/home/edwin/clangtests/blender-2.49b/intern/elbeem/intern/ntl_bsptree.cpp:192:7:
note: in instantiation of function template
specialization 'equal<float>' requested here
if( equal(triangleNormal, ntlVec3Gfx(0.0)) ) continue;
^
2 diagnostics generated.
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