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re PR c++/42338 ([c++0x] ICE on decltype usage with templates) 

PR c++/42338
	* mangle.c (write_expression): Handle tree codes that have extra
	arguments in the middle-end.
	* cp-demangle.c (d_print_comp): Fix array index printing.

From-SVN: r156103
This commit is contained in:
Jason Merrill 2010-01-20 20:58:53 -05:00 committed by Jason Merrill
parent f827f65933
commit 4d43dcdeb5
5 changed files with 73 additions and 5 deletions
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6
gcc/cp/ChangeLog
View File

@ -1,3 +1,9 @@
2010-01-20 Jason Merrill <jason@redhat.com>
PR c++/42338
* mangle.c (write_expression): Handle tree codes that have extra
arguments in the middle-end.
2010-01-20 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/42038

24
gcc/cp/mangle.c
View File

@ -2481,7 +2481,7 @@ write_expression (tree expr)
}
else
{
int i;
int i, len;
const char *name;
/* When we bind a variable or function to a non-type template
@ -2582,7 +2582,27 @@ write_expression (tree expr)
break;
default:
for (i = 0; i < TREE_OPERAND_LENGTH (expr); ++i)
/* In the middle-end, some expressions have more operands than
they do in templates (and mangling). */
switch (code)
{
case PREINCREMENT_EXPR:
case PREDECREMENT_EXPR:
case POSTINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
len = 1;
break;
case ARRAY_REF:
len = 2;
break;
default:
len = TREE_OPERAND_LENGTH (expr);
break;
}
for (i = 0; i < len; ++i)
{
tree operand = TREE_OPERAND (expr, i);
/* As a GNU extension, the middle operand of a

28
gcc/testsuite/g++.dg/abi/mangle39.C Normal file
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@ -0,0 +1,28 @@
// PR c++/42338
// { dg-options "-std=c++0x" }
// { dg-final { scan-assembler "_Z1fIPiEDTcmppfp_Li0EET_" } }
// { dg-final { scan-assembler "_Z1gIiEvRK1AIT_EDTixfp_Li0EE" } }
template<typename T>
auto f(T t) -> decltype(++t, 0)
{
++t;
return 0;
}
template <class T>
struct A
{
T operator[](int) const { return 0; }
};
template< typename T >
void g(const A<T> &a, decltype(a[0]) t) { }
int main()
{
f((int*)0);
A<int> a;
g(a,1);
}

5
libiberty/ChangeLog
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@ -1,3 +1,8 @@
2010-01-20 Jason Merrill <jason@redhat.com>
PR c++/42338
* cp-demangle.c (d_print_comp): Fix array index printing.
2010-01-11 Tristan Gingold <gingold@adacore.com>
* cplus-dem.c (ada_demangle): Remove prototype.

15
libiberty/cp-demangle.c
View File

@ -4037,9 +4037,18 @@ d_print_comp (struct d_print_info *dpi,
d_append_char (dpi, '(');
d_print_subexpr (dpi, d_left (d_right (dc)));
if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") != 0)
d_print_expr_op (dpi, d_left (dc));
d_print_subexpr (dpi, d_right (d_right (dc)));
if (strcmp (d_left (dc)->u.s_operator.op->code, "ix") == 0)
{
d_append_char (dpi, '[');
d_print_comp (dpi, d_right (d_right (dc)));
d_append_char (dpi, ']');
}
else
{
if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") != 0)
d_print_expr_op (dpi, d_left (dc));
d_print_subexpr (dpi, d_right (d_right (dc)));
}
if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR
&& d_left (dc)->u.s_operator.op->len == 1