* [PATCH] C++: add type checking for static local vector variable in template
@ 2021-09-06 12:10 wangpc
2021-09-15 21:02 ` Jason Merrill
0 siblings, 1 reply; 8+ messages in thread
From: wangpc @ 2021-09-06 12:10 UTC (permalink / raw)
To: gcc-patches; +Cc: wangpc
This patch adds type checking for static local vector variable in
C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
and thay all have this issue.
2021-08-06 wangpc <pc.wang@linux.alibaba.com>
gcc/cp/ChangeLog
* pt.c (tsubst_decl): Add type checking.
gcc/testsuite/ChangeLog
* g++.target/aarch64/sve/static-var-in-template.C: New test.
---
gcc/cp/pt.c | 8 +++++++-
.../aarch64/sve/static-var-in-template.C | 18 ++++++++++++++++++
2 files changed, 25 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index f0aa626ab723..988f4cb1e73f 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -14731,7 +14731,13 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
even if its underlying type is not. */
TYPE_DEPENDENT_P_VALID (TREE_TYPE (r)) = false;
}
-
+ /* We should verify static local variable's type
+ since vector type does not have a fixed size. */
+ if (TREE_STATIC (t)
+ &&!verify_type_context (input_location, TCTX_STATIC_STORAGE, type))
+ {
+ RETURN (error_mark_node);
+ }
layout_decl (r, 0);
}
break;
diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
new file mode 100644
index 000000000000..26d397ca565d
--- /dev/null
+++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+
+#include <arm_sve.h>
+
+template <int N>
+void f()
+{
+ int i = 0;
+ static svbool_t pg = svwhilelt_b64(0, N);
+}
+
+int main(int argc, char **argv)
+{
+ f<2>();
+ return 0;
+}
+
+/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
--
2.33.0.windows.1
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] C++: add type checking for static local vector variable in template
2021-09-06 12:10 [PATCH] C++: add type checking for static local vector variable in template wangpc
@ 2021-09-15 21:02 ` Jason Merrill
2021-09-16 9:06 ` pc.wang
0 siblings, 1 reply; 8+ messages in thread
From: Jason Merrill @ 2021-09-15 21:02 UTC (permalink / raw)
To: wangpc, gcc-patches
On 9/6/21 08:10, wangpc via Gcc-patches wrote:
> This patch adds type checking for static local vector variable in
> C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
> and thay all have this issue.
>
> 2021-08-06 wangpc <pc.wang@linux.alibaba.com>
>
> gcc/cp/ChangeLog
>
> * pt.c (tsubst_decl): Add type checking.
>
> gcc/testsuite/ChangeLog
>
> * g++.target/aarch64/sve/static-var-in-template.C: New test.
> ---
> gcc/cp/pt.c | 8 +++++++-
> .../aarch64/sve/static-var-in-template.C | 18 ++++++++++++++++++
> 2 files changed, 25 insertions(+), 1 deletion(-)
> create mode 100644 gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
>
> diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
> index f0aa626ab723..988f4cb1e73f 100644
> --- a/gcc/cp/pt.c
> +++ b/gcc/cp/pt.c
> @@ -14731,7 +14731,13 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
> even if its underlying type is not. */
> TYPE_DEPENDENT_P_VALID (TREE_TYPE (r)) = false;
> }
> -
> + /* We should verify static local variable's type
> + since vector type does not have a fixed size. */
> + if (TREE_STATIC (t)
> + &&!verify_type_context (input_location, TCTX_STATIC_STORAGE, type))
It seems that the reason this was missed before was because we checked
for this in start_decl, which isn't called for template instantiation.
Would it work to move the verify_type_context code from start_decl to
cp_finish_decl, near the other call to verify_type_context, instead of
doing anything here?
> + {
> + RETURN (error_mark_node);
> + }
> layout_decl (r, 0);
> }
> break;
> diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
> new file mode 100644
> index 000000000000..26d397ca565d
> --- /dev/null
> +++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
> @@ -0,0 +1,18 @@
> +/* { dg-do compile } */
> +
> +#include <arm_sve.h>
> +
> +template <int N>
> +void f()
> +{
> + int i = 0;
> + static svbool_t pg = svwhilelt_b64(0, N);
> +}
> +
> +int main(int argc, char **argv)
> +{
> + f<2>();
> + return 0;
> +}
> +
> +/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] C++: add type checking for static local vector variable in template
2021-09-15 21:02 ` Jason Merrill
@ 2021-09-16 9:06 ` pc.wang
0 siblings, 0 replies; 8+ messages in thread
From: pc.wang @ 2021-09-16 9:06 UTC (permalink / raw)
To: gcc-patches, Jason Merrill
I move the verify_type_context code to cp_finish_decl and it works.
I will send the new patch later.
------------------------------------------------------------------
Sender:Jason Merrill <jason@redhat.com>
Sent At:2021 Sep. 16 (Thu.) 05:04
Recipient:wangpc <pc.wang@linux.alibaba.com>; gcc-patches <gcc-patches@gcc.gnu.org>
Subject:Re: [PATCH] C++: add type checking for static local vector variable in template
On 9/6/21 08:10, wangpc via Gcc-patches wrote:
> This patch adds type checking for static local vector variable in
> C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
> and thay all have this issue.
>
> 2021-08-06 wangpc <pc.wang@linux.alibaba.com>
>
> gcc/cp/ChangeLog
>
> * pt.c (tsubst_decl): Add type checking.
>
> gcc/testsuite/ChangeLog
>
> * g++.target/aarch64/sve/static-var-in-template.C: New test.
> ---
> gcc/cp/pt.c | 8 +++++++-
> .../aarch64/sve/static-var-in-template.C | 18 ++++++++++++++++++
> 2 files changed, 25 insertions(+), 1 deletion(-)
> create mode 100644 gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
>
> diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
> index f0aa626ab723..988f4cb1e73f 100644
> --- a/gcc/cp/pt.c
> +++ b/gcc/cp/pt.c
> @@ -14731,7 +14731,13 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
> even if its underlying type is not. */
> TYPE_DEPENDENT_P_VALID (TREE_TYPE (r)) = false;
> }
> -
> + /* We should verify static local variable's type
> + since vector type does not have a fixed size. */
> + if (TREE_STATIC (t)
> + &&!verify_type_context (input_location, TCTX_STATIC_STORAGE, type))
It seems that the reason this was missed before was because we checked
for this in start_decl, which isn't called for template instantiation.
Would it work to move the verify_type_context code from start_decl to
cp_finish_decl, near the other call to verify_type_context, instead of
doing anything here?
> + {
> + RETURN (error_mark_node);
> + }
> layout_decl (r, 0);
> }
> break;
> diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
> new file mode 100644
> index 000000000000..26d397ca565d
> --- /dev/null
> +++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
> @@ -0,0 +1,18 @@
> +/* { dg-do compile } */
> +
> +#include <arm_sve.h>
> +
> +template <int N>
> +void f()
> +{
> + int i = 0;
> + static svbool_t pg = svwhilelt_b64(0, N);
> +}
> +
> +int main(int argc, char **argv)
> +{
> + f<2>();
> + return 0;
> +}
> +
> +/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] C++: add type checking for static local vector variable in template
2021-09-16 15:19 ` Jason Merrill
@ 2021-09-17 8:05 ` wangpc
0 siblings, 0 replies; 8+ messages in thread
From: wangpc @ 2021-09-17 8:05 UTC (permalink / raw)
To: Jason Merrill, gcc-patches
Thanks for your advice, I have misunderstood what you meant.
I have sent a second version patch, please review whether it is OK.
On 2021/9/16 23:19, Jason Merrill wrote:
> On 9/16/21 05:11, wangpc via Gcc-patches wrote:
>> This patch adds type checking for static local vector variable in
>> C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
>> and they all have this issue.
>>
>> 2021-08-06 wangpc <pc.wang@linux.alibaba.com>
>>
>> gcc/cp/ChangeLog
>>
>> * decl.c (cp_finish_decl): Add type checking.
>>
>> gcc/testsuite/ChangeLog
>>
>> * g++.target/aarch64/sve/static-var-in-template.C: New test.
>>
>> diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
>> index 90111e4c786..e3a06ea0858 100644
>> --- a/gcc/cp/decl.c
>> +++ b/gcc/cp/decl.c
>> @@ -7520,6 +7520,12 @@ cp_finish_decl (tree decl, tree init, bool
>> init_const_expr_p,
>> && DECL_INITIALIZED_IN_CLASS_P (decl))
>> check_static_variable_definition (decl, type);
>> + if (VAR_P (decl)
>> + && DECL_FUNCTION_SCOPE_P (decl)
>> + && TREE_STATIC (decl))
>> + verify_type_context (DECL_SOURCE_LOCATION (decl),
>> + TCTX_STATIC_STORAGE, type);
>
> I was thinking to move the verify_type_context code from start_decl,
> which handles more cases:
>
>> if (is_global_var (decl))
>> {
>> type_context_kind context = (DECL_THREAD_LOCAL_P (decl)
>> ? TCTX_THREAD_STORAGE
>> : TCTX_STATIC_STORAGE);
>> verify_type_context (input_location, context, TREE_TYPE (decl));
>> }
>
> Jason
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] C++: add type checking for static local vector variable in template
2021-09-16 9:11 wangpc
@ 2021-09-16 15:19 ` Jason Merrill
2021-09-17 8:05 ` wangpc
0 siblings, 1 reply; 8+ messages in thread
From: Jason Merrill @ 2021-09-16 15:19 UTC (permalink / raw)
To: wangpc, gcc-patches
On 9/16/21 05:11, wangpc via Gcc-patches wrote:
> This patch adds type checking for static local vector variable in
> C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
> and they all have this issue.
>
> 2021-08-06 wangpc <pc.wang@linux.alibaba.com>
>
> gcc/cp/ChangeLog
>
> * decl.c (cp_finish_decl): Add type checking.
>
> gcc/testsuite/ChangeLog
>
> * g++.target/aarch64/sve/static-var-in-template.C: New test.
>
> diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
> index 90111e4c786..e3a06ea0858 100644
> --- a/gcc/cp/decl.c
> +++ b/gcc/cp/decl.c
> @@ -7520,6 +7520,12 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
> && DECL_INITIALIZED_IN_CLASS_P (decl))
> check_static_variable_definition (decl, type);
>
> + if (VAR_P (decl)
> + && DECL_FUNCTION_SCOPE_P (decl)
> + && TREE_STATIC (decl))
> + verify_type_context (DECL_SOURCE_LOCATION (decl),
> + TCTX_STATIC_STORAGE, type);
I was thinking to move the verify_type_context code from start_decl,
which handles more cases:
> if (is_global_var (decl))
> {
> type_context_kind context = (DECL_THREAD_LOCAL_P (decl)
> ? TCTX_THREAD_STORAGE
> : TCTX_STATIC_STORAGE);
> verify_type_context (input_location, context, TREE_TYPE (decl));
> }
Jason
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] C++: add type checking for static local vector variable in template
@ 2021-09-16 9:11 wangpc
2021-09-16 15:19 ` Jason Merrill
0 siblings, 1 reply; 8+ messages in thread
From: wangpc @ 2021-09-16 9:11 UTC (permalink / raw)
To: gcc-patches; +Cc: wangpc
This patch adds type checking for static local vector variable in
C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
and they all have this issue.
2021-08-06 wangpc <pc.wang@linux.alibaba.com>
gcc/cp/ChangeLog
* decl.c (cp_finish_decl): Add type checking.
gcc/testsuite/ChangeLog
* g++.target/aarch64/sve/static-var-in-template.C: New test.
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 90111e4c786..e3a06ea0858 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -7520,6 +7520,12 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
&& DECL_INITIALIZED_IN_CLASS_P (decl))
check_static_variable_definition (decl, type);
+ if (VAR_P (decl)
+ && DECL_FUNCTION_SCOPE_P (decl)
+ && TREE_STATIC (decl))
+ verify_type_context (DECL_SOURCE_LOCATION (decl),
+ TCTX_STATIC_STORAGE, type);
+
if (init && TREE_CODE (decl) == FUNCTION_DECL)
{
tree clone;
diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
new file mode 100644
index 00000000000..c2395d18d50
--- /dev/null
+++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+
+#include <arm_sve.h>
+
+template <int N>
+void f()
+{
+ static svbool_t pg = svwhilelt_b64(0, N);
+}
+
+int main(int argc, char **argv)
+{
+ f<2>();
+ return 0;
+}
+
+/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
--
2.33.0.windows.1
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] C++: add type checking for static local vector variable in template
@ 2021-09-16 8:59 wangpc
0 siblings, 0 replies; 8+ messages in thread
From: wangpc @ 2021-09-16 8:59 UTC (permalink / raw)
To: gcc-patches; +Cc: wangpc
This patch adds type checking for static local vector variable in
C++ template, both AArch64 SVE and RISCV RVV are of sizeless type
and they all have this issue.
2021-08-06 wangpc <pc.wang@linux.alibaba.com>
gcc/cp/ChangeLog
* pt.c (tsubst_decl): Add type checking.
gcc/testsuite/ChangeLog
* g++.target/aarch64/sve/static-var-in-template.C: New test.
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 90111e4c786..e3a06ea0858 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -7520,6 +7520,12 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
&& DECL_INITIALIZED_IN_CLASS_P (decl))
check_static_variable_definition (decl, type);
+ if (VAR_P (decl)
+ && DECL_FUNCTION_SCOPE_P (decl)
+ && TREE_STATIC (decl))
+ verify_type_context (DECL_SOURCE_LOCATION (decl),
+ TCTX_STATIC_STORAGE, type);
+
if (init && TREE_CODE (decl) == FUNCTION_DECL)
{
tree clone;
diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
new file mode 100644
index 00000000000..c2395d18d50
--- /dev/null
+++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+
+#include <arm_sve.h>
+
+template <int N>
+void f()
+{
+ static svbool_t pg = svwhilelt_b64(0, N);
+}
+
+int main(int argc, char **argv)
+{
+ f<2>();
+ return 0;
+}
+
+/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
--
2.33.0.windows.1
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH] C++: add type checking for static local vector variable in template
@ 2021-09-01 8:11 wangpc
0 siblings, 0 replies; 8+ messages in thread
From: wangpc @ 2021-09-01 8:11 UTC (permalink / raw)
To: gcc-patches; +Cc: wangpc
From: wangpc <wpc337719@alibaba-inc.com>
---
gcc/cp/pt.c | 8 +++++++-
.../aarch64/sve/static-var-in-template.C | 18 ++++++++++++++++++
2 files changed, 25 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index f0aa626ab723..988f4cb1e73f 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -14731,7 +14731,13 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
even if its underlying type is not. */
TYPE_DEPENDENT_P_VALID (TREE_TYPE (r)) = false;
}
-
+ /* We should verify static local variable's type
+ since vector type does not have a fixed size. */
+ if (TREE_STATIC (t)
+ &&!verify_type_context (input_location, TCTX_STATIC_STORAGE, type))
+ {
+ RETURN (error_mark_node);
+ }
layout_decl (r, 0);
}
break;
diff --git a/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
new file mode 100644
index 000000000000..26d397ca565d
--- /dev/null
+++ b/gcc/testsuite/g++.target/aarch64/sve/static-var-in-template.C
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+
+#include <arm_sve.h>
+
+template <int N>
+void f()
+{
+ int i = 0;
+ static svbool_t pg = svwhilelt_b64(0, N);
+}
+
+int main(int argc, char **argv)
+{
+ f<2>();
+ return 0;
+}
+
+/* { dg-error {SVE type 'svbool_t' does not have a fixed size} } */
--
2.33.0.windows.1
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2021-09-17 8:05 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2021-09-06 12:10 [PATCH] C++: add type checking for static local vector variable in template wangpc
2021-09-15 21:02 ` Jason Merrill
2021-09-16 9:06 ` pc.wang
-- strict thread matches above, loose matches on Subject: below --
2021-09-16 9:11 wangpc
2021-09-16 15:19 ` Jason Merrill
2021-09-17 8:05 ` wangpc
2021-09-16 8:59 wangpc
2021-09-01 8:11 wangpc
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