https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80423
--- Comment #11 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
With the proposed patch:
trippels@gcc2-power8 llvm_build % cat ClangOffloadBundler.ii
typedef unsigned char uint8_t;
struct A {
template <int N> A(unsigned char (&)[N]);
};
void fn1(A) {
uint8_t a[]{0};
fn1(a);
}
trippels@gcc2-power8 llvm_build % /home/trippels/gcc_test/usr/local/bin/g++ -c
ClangOffloadBundler.ii
ClangOffloadBundler.ii: In function ‘void fn1(A)’:
ClangOffloadBundler.ii:7:8: internal compiler error: canonical types differ for
identical types unsigned char [1] and uint8_t [1] {aka unsigned char [1]}
fn1(a);
^
0x1038d76b comptypes(tree_node*, tree_node*, int)
../../gcc/gcc/cp/typeck.c:1433
0x10191a53 reference_related_p(tree_node*, tree_node*)
../../gcc/gcc/cp/call.c:1442
0x101a68b3 reference_binding
../../gcc/gcc/cp/call.c:1595
0x101a793b implicit_conversion
../../gcc/gcc/cp/call.c:1837
0x101a9c5b add_function_candidate
../../gcc/gcc/cp/call.c:2196
0x101ab0c7 add_template_candidate_real
../../gcc/gcc/cp/call.c:3208
0x101abc57 add_template_candidate
../../gcc/gcc/cp/call.c:3252
0x101abc57 add_candidates
../../gcc/gcc/cp/call.c:5483
0x101a5933 build_user_type_conversion_1
../../gcc/gcc/cp/call.c:3799
0x101a7853 implicit_conversion
../../gcc/gcc/cp/call.c:1898
0x101a9c5b add_function_candidate
../../gcc/gcc/cp/call.c:2196
0x101aba8f add_candidates
../../gcc/gcc/cp/call.c:5496
0x101ac593 perform_overload_resolution
../../gcc/gcc/cp/call.c:4143
0x101afef3 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, int)
../../gcc/gcc/cp/call.c:4232
0x103fd9f3 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**,
bool, bool, int)
../../gcc/gcc/cp/semantics.c:2441
0x10348197 cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:6992
0x10348f9f cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8103
0x1034a613 cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:8781
0x1034af87 cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:8882
0x1034bab7 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9169
