https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84798
Bug ID: 84798
Summary: ICE (Segmentation fault) if `auto` appears in a
template argument
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: v.reshetnikov at gmail dot com
Target Milestone: ---
The following C++ code causes an ICE in GCC 8.0.1 20180308 (tested with
https://godbolt.org/):
/********************** SOURCE **********************/
template<typename T>
struct S {
static constexpr T value = 0;
};
constexpr auto x = S<void(*)(auto)>::value;
/******************** END SOURCE ********************/
/********************** OUTPUT **********************/
<source>:6:38: internal compiler error: Segmentation fault
constexpr auto x = S<void(*)(auto)>::value;
^~~~~
mmap: Invalid argument
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
/******************** END OUTPUT ********************/
The same problem appears to exist in all versions since GCC 6.1.
