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c++: Mangling of dependent conversions [PR91377]

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We skip over other conversion codes when mangling expressions, we should do
the same with IMPLICIT_CONV_EXPR.

gcc/cp/ChangeLog
2020-04-04  Jason Merrill  <jason@redhat.com>

	PR c++/91377
	* mangle.c (write_expression): Skip IMPLICIT_CONV_EXPR.
This commit is contained in:
Jason Merrill 2020-04-04 11:45:41 -04:00
parent 49a86fce1a
commit 75c8d6e54a
3 changed files with 19 additions and 0 deletions
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5
gcc/cp/ChangeLog
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@ -1,3 +1,8 @@
2020-04-04 Jason Merrill <jason@redhat.com>
PR c++/91377
* mangle.c (write_expression): Skip IMPLICIT_CONV_EXPR.
2020-04-04 Patrick Palka <ppalka@redhat.com>
PR c++/94205

1
gcc/cp/mangle.c
View file

@ -2875,6 +2875,7 @@ write_expression (tree expr)
/* Skip NOP_EXPR and CONVERT_EXPR. They can occur when (say) a pointer
argument is converted (via qualification conversions) to another type. */
while (CONVERT_EXPR_CODE_P (code)
|| code == IMPLICIT_CONV_EXPR
|| location_wrapper_p (expr)
/* Parentheses aren't mangled. */
|| code == PAREN_EXPR

13
gcc/testsuite/g++.dg/abi/mangle75.C Normal file
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@ -0,0 +1,13 @@
// PR c++/91377
// { dg-do compile { target c++11 } }
struct f {
static constexpr int d = 3;
typedef int e;
};
template <int a> struct x { };
template <typename g, g j, g m> using n = x<j + m>;
template <typename ac> auto v() -> n<typename ac::e, 0, ac::d>;
void af() { v<f>(); }
// { dg-final { scan-assembler "_Z1vI1fE1xIXplLi0EsrT_1dEEv" } }