From b8c9cc5100a8ba3aa56a6ffdd58d370cbb0134a4 Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Mon, 23 Dec 2019 09:43:46 +0000
Subject: [PATCH] [C++] Make same_type_p return false for gnu_vector_type_p
differences (PR 92789)
As Jason pointed out in the review of the C++ gnu_vector_type_p patch:
https://gcc.gnu.org/ml/gcc-patches/2019-12/msg00173.html
the real fix for the XFAILs in acle/general-c++/gnu_vectors_*.C is to
make same_type_p return false for two types if one is gnu_vector_type_p
and the other isn't. This patch does that and fixes the fallout.
Originally I'd tried to make it so that "X *" and "Y *" are
interconvertible whenever X and Y are, and similarly for
"X &" and "Y &". That doesn't fall out naturally though,
and is different from how -flax-vector-conversions works.
The patch therefore accepts all the consequences of making
X and Y !same_type_p instead of trying to work around them.
2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
gcc/cp/
PR c++/92789
* typeck.c (structural_comptypes): Make sure that two vector types
agree on gnu_vector_type_p.
gcc/testsuite/
PR c++/92789
* g++.dg/ext/sve-sizeless-2.C (statements): Expect pointer
difference and comparisons between GNU and non-GNU types
to be rejected. Expect __is_same to be false for such pairs.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C: Remove
XFAILs. Expect conversions between SVE vector pointers and
GNU vector pointers to be rejected. Test references.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C: Likewise.
From-SVN: r279717
---
gcc/cp/ChangeLog | 6 +++
gcc/cp/typeck.c | 3 +-
gcc/testsuite/ChangeLog | 11 +++++
gcc/testsuite/g++.dg/ext/sve-sizeless-2.C | 44 +++++++++----------
.../sve/acle/general-c++/gnu_vectors_1.C | 28 +++++++++---
.../sve/acle/general-c++/gnu_vectors_2.C | 28 +++++++++---
6 files changed, 83 insertions(+), 37 deletions(-)
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 720c3ee0e738..14c6d3245807 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
+
+ PR c++/92789
+ * typeck.c (structural_comptypes): Make sure that two vector types
+ agree on gnu_vector_type_p.
+
2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
* cvt.c (ocp_convert): Apply rvalue to the source of vector
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index d2f4a001e503..18c16857a829 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -1425,7 +1425,8 @@ structural_comptypes (tree t1, tree t2, int strict)
break;
case VECTOR_TYPE:
- if (maybe_ne (TYPE_VECTOR_SUBPARTS (t1), TYPE_VECTOR_SUBPARTS (t2))
+ if (gnu_vector_type_p (t1) != gnu_vector_type_p (t2)
+ || maybe_ne (TYPE_VECTOR_SUBPARTS (t1), TYPE_VECTOR_SUBPARTS (t2))
|| !same_type_p (TREE_TYPE (t1), TREE_TYPE (t2)))
return false;
break;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 321d54b47fc9..59fc56447acd 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,14 @@
+2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
+
+ PR c++/92789
+ * g++.dg/ext/sve-sizeless-2.C (statements): Expect pointer
+ difference and comparisons between GNU and non-GNU types
+ to be rejected. Expect __is_same to be false for such pairs.
+ * g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C: Remove
+ XFAILs. Expect conversions between SVE vector pointers and
+ GNU vector pointers to be rejected. Test references.
+ * g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C: Likewise.
+
2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
* g++.dg/ext/vector39.C: New test.
diff --git a/gcc/testsuite/g++.dg/ext/sve-sizeless-2.C b/gcc/testsuite/g++.dg/ext/sve-sizeless-2.C
index f6b9c319147b..40b65d37f8a1 100644
--- a/gcc/testsuite/g++.dg/ext/sve-sizeless-2.C
+++ b/gcc/testsuite/g++.dg/ext/sve-sizeless-2.C
@@ -183,8 +183,8 @@ statements (int n)
// Pointer assignment.
- gnu_sc_ptr = sve_sc_ptr;
- sve_sc_ptr = gnu_sc_ptr;
+ gnu_sc_ptr = sve_sc_ptr; // { dg-error {invalid conversion from 'svint8_t\*' to 'int8x32_t\*'} }
+ sve_sc_ptr = gnu_sc_ptr; // { dg-error {invalid conversion from 'int8x32_t\*'[^\n]* to 'svint8_t\*'} }
// Pointer arithmetic.
@@ -197,8 +197,8 @@ statements (int n)
sve_sc_ptr -= 0; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
sve_sc_ptr -= 1; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
sve_sc_ptr - sve_sc_ptr; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
- gnu_sc_ptr - sve_sc_ptr; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
- sve_sc_ptr - gnu_sc_ptr; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
+ gnu_sc_ptr - sve_sc_ptr; // { dg-error {invalid operands of types 'int8x32_t\*'[^\n]* and 'svint8_t\*' to binary 'operator-'} }
+ sve_sc_ptr - gnu_sc_ptr; // { dg-error {invalid operands of types 'svint8_t\*' and 'int8x32_t\*'[^\n]* to binary 'operator-'} }
sve_sc1 = sve_sc_ptr[0]; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
sve_sc1 = sve_sc_ptr[1]; // { dg-error {arithmetic on pointer to SVE type 'svint8_t'} }
@@ -210,18 +210,18 @@ statements (int n)
sve_sc_ptr <= &sve_sc1;
sve_sc_ptr > &sve_sc1;
sve_sc_ptr >= &sve_sc1;
- gnu_sc_ptr == sve_sc_ptr;
- gnu_sc_ptr != sve_sc_ptr;
- gnu_sc_ptr < sve_sc_ptr;
- gnu_sc_ptr <= sve_sc_ptr;
- gnu_sc_ptr > sve_sc_ptr;
- gnu_sc_ptr >= sve_sc_ptr;
- sve_sc_ptr == gnu_sc_ptr;
- sve_sc_ptr != gnu_sc_ptr;
- sve_sc_ptr < gnu_sc_ptr;
- sve_sc_ptr <= gnu_sc_ptr;
- sve_sc_ptr > gnu_sc_ptr;
- sve_sc_ptr >= gnu_sc_ptr;
+ gnu_sc_ptr == sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ gnu_sc_ptr != sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ gnu_sc_ptr < sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ gnu_sc_ptr <= sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ gnu_sc_ptr > sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ gnu_sc_ptr >= sve_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr == gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr != gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr < gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr <= gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr > gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
+ sve_sc_ptr >= gnu_sc_ptr; // { dg-error {comparison between distinct pointer types [^\n]*lacks a cast} }
// New and delete.
@@ -243,8 +243,8 @@ statements (int n)
0 ? 0 : sve_sc1; // { dg-error {different types 'int' and 'svint8_t'} }
0 ? sve_sc1 : sve_sc1;
0 ? sve_sc_ptr : sve_sc_ptr;
- 0 ? sve_sc_ptr : gnu_sc_ptr;
- 0 ? gnu_sc_ptr : sve_sc_ptr;
+ 0 ? sve_sc_ptr : gnu_sc_ptr; // { dg-error {conditional expression between distinct pointer types [^\n]*lacks a cast} }
+ 0 ? gnu_sc_ptr : sve_sc_ptr; // { dg-error {conditional expression between distinct pointer types [^\n]*lacks a cast} }
// Function arguments.
@@ -321,11 +321,11 @@ statements (int n)
{ typedef int f[__is_pod (svint8_t) ? 1 : -1]; }
{ typedef int f[!__is_polymorphic (svint8_t) ? 1 : -1]; }
{ typedef int f[__is_same_as (svint8_t, svint8_t) ? 1 : -1]; }
- { typedef int f[__is_same_as (svint8_t, int8x32_t) ? 1 : -1]; }
- { typedef int f[__is_same_as (int8x32_t, svint8_t) ? 1 : -1]; }
+ { typedef int f[!__is_same_as (svint8_t, int8x32_t) ? 1 : -1]; }
+ { typedef int f[!__is_same_as (int8x32_t, svint8_t) ? 1 : -1]; }
{ typedef int f[__is_same_as (svint8_t *, svint8_t *) ? 1 : -1]; }
- { typedef int f[__is_same_as (svint8_t *, int8x32_t *) ? 1 : -1]; }
- { typedef int f[__is_same_as (int8x32_t *, svint8_t *) ? 1 : -1]; }
+ { typedef int f[!__is_same_as (svint8_t *, int8x32_t *) ? 1 : -1]; }
+ { typedef int f[!__is_same_as (int8x32_t *, svint8_t *) ? 1 : -1]; }
{ typedef int f[!__is_same_as (svint8_t, int) ? 1 : -1]; }
{ typedef int f[!__is_same_as (svint8_t, svint16_t) ? 1 : -1]; }
{ typedef int f[__is_trivial (svint8_t) ? 1 : -1]; }
diff --git a/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C b/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C
index d1da64c901b0..f60ffe4a262f 100644
--- a/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C
+++ b/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C
@@ -36,14 +36,14 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
gnu_uint8_t init_gnu_u1 = 0; // { dg-error {cannot convert 'int' to 'gnu_uint8_t'[^\n]* in initialization} }
gnu_uint8_t init_gnu_u2 = {};
- gnu_uint8_t init_gnu_u3 = { sve_u1 };
+ gnu_uint8_t init_gnu_u3 = { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u4 = { gnu_u1 };
gnu_uint8_t init_gnu_u5 = { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u6 = { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u7 = { 0 };
gnu_uint8_t init_gnu_u8 = { sve_u1, sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u9 = { gnu_u1, gnu_u1 }; // { dg-error {cannot convert 'gnu_uint8_t'[^\n]* to 'unsigned char' in initialization} }
- gnu_uint8_t init_gnu_u10 { sve_u1 };
+ gnu_uint8_t init_gnu_u10 { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u11 { gnu_u1 };
gnu_uint8_t init_gnu_u12 { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u13 { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
@@ -69,7 +69,7 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
(gnu_uint8_t) {};
(gnu_uint8_t) { 0 };
- (gnu_uint8_t) { sve_u1 };
+ (gnu_uint8_t) { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
(gnu_uint8_t) { gnu_u1 };
(gnu_uint8_t) { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
(gnu_uint8_t) { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
@@ -434,8 +434,8 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
// Conditional expressions.
uc ? sve_u1 : sve_u1;
- uc ? gnu_u1 : sve_u1; // { dg-error {operands to '\?:' have different types 'gnu_uint8_t'[^\n]* and 'svuint8_t'} "" { xfail *-*-* } }
- uc ? sve_u1 : gnu_u1; // { dg-error {operands to '\?:' have different types 'svuint8_t' and 'gnu_uint8_t'} "" { xfail *-*-* } }
+ uc ? gnu_u1 : sve_u1; // { dg-error {operands to '\?:' have different types 'gnu_uint8_t'[^\n]* and 'svuint8_t'} }
+ uc ? sve_u1 : gnu_u1; // { dg-error {operands to '\?:' have different types 'svuint8_t' and 'gnu_uint8_t'} }
uc ? gnu_u1 : gnu_u1;
sve_u1 ? sve_u1 : sve_u1; // { dg-error {could not convert 'sve_u1' from 'svuint8_t' to 'bool'} }
@@ -474,15 +474,29 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
static_assert(__is_literal_type(svuint8_t));
static_assert(__is_literal_type(gnu_uint8_t));
+ // Pointers.
+
svuint8_t *sve_ptr1 = &sve_u1;
- svuint8_t *sve_ptr2 = &gnu_u1;
+ svuint8_t *sve_ptr2 = &gnu_u1; // { dg-error {invalid conversion} }
svuint8_t *sve_ptr3 = &sve_s1; // { dg-error {cannot convert 'svint8_t\*' to 'svuint8_t\*' in initialization} }
svuint8_t *sve_ptr4 = &gnu_s1; // { dg-error {cannot convert 'gnu_int8_t\*'[^\n]* to 'svuint8_t\*' in initialization} }
- gnu_uint8_t *gnu_ptr1 = &sve_u1;
+ gnu_uint8_t *gnu_ptr1 = &sve_u1; // { dg-error {invalid conversion} }
gnu_uint8_t *gnu_ptr2 = &gnu_u1;
gnu_uint8_t *gnu_ptr3 = &sve_s1; // { dg-error {cannot convert 'svint8_t\*' to 'gnu_uint8_t\*'} }
gnu_uint8_t *gnu_ptr4 = &gnu_s1; // { dg-error {cannot convert 'gnu_int8_t\*'[^\n]* to 'gnu_uint8_t\*'} }
+
+ // References.
+
+ svuint8_t &sve_ref1 = sve_u1;
+ svuint8_t &sve_ref2 = gnu_u1; // { dg-error {cannot bind non-const lvalue reference} }
+ svuint8_t &sve_ref3 = sve_s1; // { dg-error {invalid initialization of reference of type 'svuint8_t\&' from expression of type 'svint8_t'} }
+ svuint8_t &sve_ref4 = gnu_s1; // { dg-error {invalid initialization of reference of type 'svuint8_t\&' from expression of type 'gnu_int8_t'} }
+
+ gnu_uint8_t &gnu_ref1 = sve_u1; // { dg-error {cannot bind non-const lvalue reference} }
+ gnu_uint8_t &gnu_ref2 = gnu_u1;
+ gnu_uint8_t &gnu_ref3 = sve_s1; // { dg-error {invalid initialization of reference of type 'gnu_uint8_t\&} }
+ gnu_uint8_t &gnu_ref4 = gnu_s1; // { dg-error {invalid initialization of reference of type 'gnu_uint8_t\&} }
}
constexpr svuint8_t const1 (svuint8_t x) { return x; }
diff --git a/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C b/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C
index da4462b24217..30b2ca59d791 100644
--- a/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C
+++ b/gcc/testsuite/g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C
@@ -36,14 +36,14 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
gnu_uint8_t init_gnu_u1 = 0; // { dg-error {cannot convert 'int' to 'gnu_uint8_t'[^\n]* in initialization} }
gnu_uint8_t init_gnu_u2 = {};
- gnu_uint8_t init_gnu_u3 = { sve_u1 };
+ gnu_uint8_t init_gnu_u3 = { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u4 = { gnu_u1 };
gnu_uint8_t init_gnu_u5 = { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u6 = { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u7 = { 0 };
gnu_uint8_t init_gnu_u8 = { sve_u1, sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u9 = { gnu_u1, gnu_u1 }; // { dg-error {cannot convert 'gnu_uint8_t'[^\n]* to 'unsigned char' in initialization} }
- gnu_uint8_t init_gnu_u10 { sve_u1 };
+ gnu_uint8_t init_gnu_u10 { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u11 { gnu_u1 };
gnu_uint8_t init_gnu_u12 { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
gnu_uint8_t init_gnu_u13 { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
@@ -69,7 +69,7 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
(gnu_uint8_t) {};
(gnu_uint8_t) { 0 };
- (gnu_uint8_t) { sve_u1 };
+ (gnu_uint8_t) { sve_u1 }; // { dg-error {cannot convert 'svuint8_t' to 'unsigned char' in initialization} }
(gnu_uint8_t) { gnu_u1 };
(gnu_uint8_t) { sve_s1 }; // { dg-error {cannot convert 'svint8_t' to 'unsigned char' in initialization} }
(gnu_uint8_t) { gnu_s1 }; // { dg-error {cannot convert 'gnu_int8_t'[^\n]* to 'unsigned char' in initialization} }
@@ -434,8 +434,8 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
// Conditional expressions.
uc ? sve_u1 : sve_u1;
- uc ? gnu_u1 : sve_u1; // { dg-error {operands to '\?:' have different types 'gnu_uint8_t'[^\n]* and 'svuint8_t'} "" { xfail *-*-* } }
- uc ? sve_u1 : gnu_u1; // { dg-error {operands to '\?:' have different types 'svuint8_t' and 'gnu_uint8_t'} "" { xfail *-*-* } }
+ uc ? gnu_u1 : sve_u1; // { dg-error {operands to '\?:' have different types 'gnu_uint8_t'[^\n]* and 'svuint8_t'} }
+ uc ? sve_u1 : gnu_u1; // { dg-error {operands to '\?:' have different types 'svuint8_t' and 'gnu_uint8_t'} }
uc ? gnu_u1 : gnu_u1;
sve_u1 ? sve_u1 : sve_u1; // { dg-error {could not convert 'sve_u1' from 'svuint8_t' to 'bool'} }
@@ -474,15 +474,29 @@ f (svuint8_t sve_u1, svint8_t sve_s1,
static_assert(__is_literal_type(svuint8_t));
static_assert(__is_literal_type(gnu_uint8_t));
+ // Pointers.
+
svuint8_t *sve_ptr1 = &sve_u1;
- svuint8_t *sve_ptr2 = &gnu_u1;
+ svuint8_t *sve_ptr2 = &gnu_u1; // { dg-error {invalid conversion} }
svuint8_t *sve_ptr3 = &sve_s1; // { dg-error {invalid conversion from 'svint8_t\*' to 'svuint8_t\*'} }
svuint8_t *sve_ptr4 = &gnu_s1; // { dg-error {invalid conversion from 'gnu_int8_t\*'[^\n]* to 'svuint8_t\*'} }
- gnu_uint8_t *gnu_ptr1 = &sve_u1;
+ gnu_uint8_t *gnu_ptr1 = &sve_u1; // { dg-error {invalid conversion} }
gnu_uint8_t *gnu_ptr2 = &gnu_u1;
gnu_uint8_t *gnu_ptr3 = &sve_s1; // { dg-error {invalid conversion from 'svint8_t\*' to 'gnu_uint8_t\*'} }
gnu_uint8_t *gnu_ptr4 = &gnu_s1; // { dg-error {invalid conversion from 'gnu_int8_t\*'[^\n]* to 'gnu_uint8_t\*'} }
+
+ // References.
+
+ svuint8_t &sve_ref1 = sve_u1;
+ svuint8_t &sve_ref2 = gnu_u1; // { dg-error {cannot bind non-const lvalue reference} }
+ svuint8_t &sve_ref3 = sve_s1; // { dg-error {cannot bind non-const lvalue reference} }
+ svuint8_t &sve_ref4 = gnu_s1; // { dg-error {cannot bind non-const lvalue reference} }
+
+ gnu_uint8_t &gnu_ref1 = sve_u1; // { dg-error {cannot bind non-const lvalue reference} }
+ gnu_uint8_t &gnu_ref2 = gnu_u1;
+ gnu_uint8_t &gnu_ref3 = sve_s1; // { dg-error {cannot bind non-const lvalue reference} }
+ gnu_uint8_t &gnu_ref4 = gnu_s1; // { dg-error {cannot bind non-const lvalue reference} }
}
constexpr svuint8_t const1 (svuint8_t x) { return x; }
--
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