https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71226
Bug ID: 71226
Summary: ICE in fold_binary_loc, at fold-const.c:9252, from
constexpr function
Product: gcc
Version: 6.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gccbug at kundor dot org
Target Milestone: ---
Created attachment 38542
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38542&action=edit
preprocessed source
This code causes an internal compiler error with GCC 6.1:
struct zero {
int m_data[1];
constexpr zero() : m_data{} {}
};
constexpr zero foo(zero a) {
a.m_data[0] += a.m_data[0];
return a;
}
int main() {
constexpr zero x;
constexpr zero y = foo(x);
return 0;
}
The output is
consterr.cpp: In function 'int main()':
consterr.cpp:14:29: in constexpr expansion of 'foo(x)'
consterr.cpp:14:29: internal compiler error: in fold_binary_loc, at
fold-const.c:9252
constexpr zero y = foo(x);
^
consterr.cpp:14:29: internal compiler error: Abort trap: 6
g++-mp-6: internal compiler error: Abort trap: 6 (program cc1plus)
Please submit a full bug report...
I am on x86_64-apple-darwin15, but I have verified the same error occurs on
other platforms (https://godbolt.org/g/ebCznR ,
http://coliru.stacked-crooked.com/a/ca262ac3ffb4313b)
G++ 5.3.0 also hits an internal compiler error, but just reports
consterr.cpp:14:29: internal compiler error: Segmentation fault: 11
(no mention of fold_binary_loc.)
