https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
Bug ID: 115546
Summary: [14.1.0 Regression] Section Type Conflict Error
Product: gcc
Version: 14.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nikhilg1 at uci dot edu
Target Milestone: ---
Consider the following reduced test case:
$>cat test.cpp
template <class T>
int v2 __attribute__((section("A"))) = sizeof(T);
template <>
int v2<double> __attribute__((section("A"))) = 50;
void a(int*& x) {
x = &v2<int>;
}
$>g++-13 -c test.cpp && echo OK
OK
$>g++-14 -c test.cpp && echo OK
test.cpp:2:5: error: 'v2<int>' causes a section type conflict with 'v2<double>'
2 | int v2 __attribute__((section("A"))) = sizeof(T);
| ^~
test.cpp:5:5: note: 'v2<double>' was declared here
5 | int v2<double> __attribute__((section("A"))) = 50;
| ^~~~~~~~~~
$>clang++-17 -c test.cpp && echo OK
OK
I am looking through the docs on the section attribute
(https://gcc.gnu.org/onlinedocs/gcc-14.1.0/gcc/Common-Variable-Attributes.html)
but am not able to see any reason why this case has started to fail. I also
don't see any other compiler failing for this case.
Issue is occurring since g++ 14.1.0 and seems to be reproducible on trunk as
well.
