https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78716
Bug ID: 78716
Summary: [7 Regression] ICE in gimplify_va_arg_expr, at
gimplify.c:12650 (i686-linux-gnu)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
Created attachment 40277
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40277&action=edit
preprocessed source
seen with -r on i686-linux-gnu with all optimization levels:
$ cat ttuple.ii
template <typename = int, typename = int, typename = int, typename = int,
typename = int>
struct a;
template <typename> struct b;
template <typename = int, typename d = void> class e : b<d>::c {
public:
typedef e f;
typedef typename b<d>::c g;
e(__builtin_va_list *s) : g(__builtin_va_arg(*s, int)) {}
};
template <> struct b<void> { typedef e<> c; };
template <> struct e<> { template <typename h> e(h); };
template <typename i> class a<i> : public e<i> {};
template <typename i, typename j, typename k, typename l>
class a<i, j, k, l> : e<typename a<j>::f> {
public:
template <typename m, typename n, typename o, typename p>
a(a<m, n, o, p>) : a::f(0) {}
};
template <typename i, typename j, typename k, typename l> a<> r(i, j, k, l);
void q() { a<float, float>(r(4, 6, 9, 7)); }
$ g++ -c -O0 ttuple.ii
ttuple.ii: In constructor 'e< <template-parameter-1-1>, d>::e(char**) [with
<template-parameter-1-1> = e<float, void>; d = void]':
ttuple.ii:9:56: internal compiler error: in gimplify_va_arg_expr, at
gimplify.c:12650
e(__builtin_va_list *s) : g(__builtin_va_arg(*s, int)) {}
^
0x852820c gimplify_va_arg_expr(tree_node**, gimple**, gimple**)
../../src/gcc/gimplify.c:12650
0x8524e36 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../src/gcc/gimplify.c:11256
0x852cf86 gimplify_expr
../../src/gcc/gimplify.c:12181
0x852e30c gimplify_call_expr
../../src/gcc/gimplify.c:3242
0x8525af3 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../src/gcc/gimplify.c:11155
0x8527be9 gimplify_stmt(tree_node**, gimple**)
../../src/gcc/gimplify.c:6459
0x8525a4b gimplify_cleanup_point_expr
../../src/gcc/gimplify.c:6210
0x8525a4b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../src/gcc/gimplify.c:11559
0x8527be9 gimplify_stmt(tree_node**, gimple**)
../../src/gcc/gimplify.c:6459
0x8528622 gimplify_bind_expr
../../src/gcc/gimplify.c:1276
0x8525b45 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../src/gcc/gimplify.c:11383
0x8527be9 gimplify_stmt(tree_node**, gimple**)
../../src/gcc/gimplify.c:6459
0x8528eb2 gimplify_body(tree_node*, bool)
../../src/gcc/gimplify.c:12377
0x8529265 gimplify_function_tree(tree_node*)
../../src/gcc/gimplify.c:12534
0x83f1608 cgraph_node::analyze()
../../src/gcc/cgraphunit.c:626
0x83f3c00 analyze_functions
../../src/gcc/cgraphunit.c:1087
0x83f4660 symbol_table::finalize_compilation_unit()
../../src/gcc/cgraphunit.c:2562
Please submit a full bug report,
with preprocessed source if appropriate.
