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* [gcc r13-4800] c++: modules and std::source_location::current() def arg [PR100881]
@ 2022-12-19 20:39 Patrick Palka
0 siblings, 0 replies; only message in thread
From: Patrick Palka @ 2022-12-19 20:39 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:64f7a3b38765bcf7cdf5b37a991c06337468ad8b
commit r13-4800-g64f7a3b38765bcf7cdf5b37a991c06337468ad8b
Author: Patrick Palka <ppalka@redhat.com>
Date: Mon Dec 19 15:35:51 2022 -0500
c++: modules and std::source_location::current() def arg [PR100881]
We currently declare __builtin_source_location with a const void* return
type instead of the actual type const std::source_location::__impl*, and
later when folding this builtin we obtain the actual type via name lookup.
But the below testcase demonstrates this approach seems to interact
poorly with modules, since we may import an entity that uses
std::source_location::current() in its default argument (or DMI) without
necessarily importing <source_location>, and thus the name lookup for
std::source_location will fail at the call site (when using the default
argument) unless we also import <source_location>.
This patch fixes this by instead initially declaring the builtin with an
auto return type and updating it appropriately upon its first use (in
standard code the first/only use would be in the definition of
std::source_location). Thus when folding calls to this builtin we can
get at its return type through the type of the CALL_EXPR and avoid
needing to do a name lookup.
PR c++/100881
gcc/cp/ChangeLog:
* constexpr.cc (cxx_eval_builtin_function_call): Adjust calls
to fold_builtin_source_location.
* cp-gimplify.cc (cp_gimplify_expr): Likewise.
(cp_fold): Likewise.
(get_source_location_impl_type): Remove location_t parameter and
adjust accordingly. No longer static.
(fold_builtin_source_location): Take a CALL_EXPR tree instead of a
location and obtain the impl type from its return type.
* cp-tree.h (enum cp_tree_index): Remove CPTI_SOURCE_LOCATION_IMPL
enumerator.
(source_location_impl): Remove.
(fold_builtin_source_location): Adjust parameter type.
(get_source_location_impl_type): Declare.
* decl.cc (cxx_init_decl_processing): Declare
__builtin_source_location with auto return type instead of
const void*.
(require_deduced_type): Update the return type of
__builtin_source_location.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/srcloc3.C: Adjust expected note s/evaluating/using.
* g++.dg/cpp2a/srcloc4.C: Likewise.
* g++.dg/cpp2a/srcloc5.C: Likewise.
* g++.dg/cpp2a/srcloc6.C: Likewise.
* g++.dg/cpp2a/srcloc7.C: Likewise.
* g++.dg/cpp2a/srcloc8.C: Likewise.
* g++.dg/cpp2a/srcloc9.C: Likewise.
* g++.dg/cpp2a/srcloc10.C: Likewise.
* g++.dg/cpp2a/srcloc11.C: Likewise.
* g++.dg/cpp2a/srcloc12.C: Likewise.
* g++.dg/cpp2a/srcloc13.C: Likewise.
* g++.dg/modules/pr100881_a.C: New test.
* g++.dg/modules/pr100881_b.C: New test.
Diff:
---
gcc/cp/constexpr.cc | 2 +-
gcc/cp/cp-gimplify.cc | 57 +++++++++++++++----------------
gcc/cp/cp-tree.h | 8 ++---
gcc/cp/decl.cc | 25 ++++++++++++--
gcc/testsuite/g++.dg/cpp2a/srcloc10.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc11.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc12.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc13.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc3.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc4.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc5.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc6.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc7.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc8.C | 2 +-
gcc/testsuite/g++.dg/cpp2a/srcloc9.C | 2 +-
gcc/testsuite/g++.dg/modules/pr100881_a.C | 34 ++++++++++++++++++
gcc/testsuite/g++.dg/modules/pr100881_b.C | 8 +++++
17 files changed, 106 insertions(+), 50 deletions(-)
diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc
index e43d92864f5..d99c49bdbe2 100644
--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -1492,7 +1492,7 @@ cxx_eval_builtin_function_call (const constexpr_ctx *ctx, tree t, tree fun,
temp_override<tree> ovr (current_function_decl);
if (ctx->call && ctx->call->fundef)
current_function_decl = ctx->call->fundef->decl;
- return fold_builtin_source_location (EXPR_LOCATION (t));
+ return fold_builtin_source_location (t);
}
int strops = 0;
diff --git a/gcc/cp/cp-gimplify.cc b/gcc/cp/cp-gimplify.cc
index 983f2a566a6..1e0b4f8c1cf 100644
--- a/gcc/cp/cp-gimplify.cc
+++ b/gcc/cp/cp-gimplify.cc
@@ -722,7 +722,7 @@ cp_gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
break;
case CP_BUILT_IN_SOURCE_LOCATION:
*expr_p
- = fold_builtin_source_location (EXPR_LOCATION (*expr_p));
+ = fold_builtin_source_location (*expr_p);
break;
case CP_BUILT_IN_IS_CORRESPONDING_MEMBER:
*expr_p
@@ -2850,7 +2850,7 @@ cp_fold (tree x)
case CP_BUILT_IN_IS_CONSTANT_EVALUATED:
break;
case CP_BUILT_IN_SOURCE_LOCATION:
- x = fold_builtin_source_location (EXPR_LOCATION (x));
+ x = fold_builtin_source_location (x);
break;
case CP_BUILT_IN_IS_CORRESPONDING_MEMBER:
x = fold_builtin_is_corresponding_member
@@ -2872,7 +2872,7 @@ cp_fold (tree x)
&& fndecl_built_in_p (callee, CP_BUILT_IN_SOURCE_LOCATION,
BUILT_IN_FRONTEND))
{
- x = fold_builtin_source_location (EXPR_LOCATION (x));
+ x = fold_builtin_source_location (x);
break;
}
@@ -3171,12 +3171,11 @@ process_stmt_assume_attribute (tree std_attrs, tree statement,
return remove_attribute ("gnu", "assume", std_attrs);
}
-/* Helper of fold_builtin_source_location, return the
- std::source_location::__impl type after performing verification
- on it. LOC is used for reporting any errors. */
+/* Return the type std::source_location::__impl after performing
+ verification on it. */
-static tree
-get_source_location_impl_type (location_t loc)
+tree
+get_source_location_impl_type ()
{
tree name = get_identifier ("source_location");
tree decl = lookup_qualified_name (std_node, name);
@@ -3184,9 +3183,9 @@ get_source_location_impl_type (location_t loc)
{
auto_diagnostic_group d;
if (decl == error_mark_node || TREE_CODE (decl) == TREE_LIST)
- qualified_name_lookup_error (std_node, name, decl, loc);
+ qualified_name_lookup_error (std_node, name, decl, input_location);
else
- error_at (loc, "%qD is not a type", decl);
+ error ("%qD is not a type", decl);
return error_mark_node;
}
name = get_identifier ("__impl");
@@ -3196,15 +3195,15 @@ get_source_location_impl_type (location_t loc)
{
auto_diagnostic_group d;
if (decl == error_mark_node || TREE_CODE (decl) == TREE_LIST)
- qualified_name_lookup_error (type, name, decl, loc);
+ qualified_name_lookup_error (type, name, decl, input_location);
else
- error_at (loc, "%qD is not a type", decl);
+ error ("%qD is not a type", decl);
return error_mark_node;
}
type = TREE_TYPE (decl);
if (TREE_CODE (type) != RECORD_TYPE)
{
- error_at (loc, "%qD is not a class type", decl);
+ error ("%qD is not a class type", decl);
return error_mark_node;
}
@@ -3221,8 +3220,7 @@ get_source_location_impl_type (location_t loc)
{
if (TREE_TYPE (field) != const_string_type_node)
{
- error_at (loc, "%qD does not have %<const char *%> type",
- field);
+ error ("%qD does not have %<const char *%> type", field);
return error_mark_node;
}
cnt++;
@@ -3232,7 +3230,7 @@ get_source_location_impl_type (location_t loc)
{
if (TREE_CODE (TREE_TYPE (field)) != INTEGER_TYPE)
{
- error_at (loc, "%qD does not have integral type", field);
+ error ("%qD does not have integral type", field);
return error_mark_node;
}
cnt++;
@@ -3244,9 +3242,9 @@ get_source_location_impl_type (location_t loc)
}
if (cnt != 4)
{
- error_at (loc, "%<std::source_location::__impl%> does not contain only "
- "non-static data members %<_M_file_name%>, "
- "%<_M_function_name%>, %<_M_line%> and %<_M_column%>");
+ error ("%<std::source_location::__impl%> does not contain only "
+ "non-static data members %<_M_file_name%>, "
+ "%<_M_function_name%>, %<_M_line%> and %<_M_column%>");
return error_mark_node;
}
return build_qualified_type (type, TYPE_QUAL_CONST);
@@ -3337,21 +3335,20 @@ static GTY(()) hash_table <source_location_table_entry_hash>
*source_location_table;
static GTY(()) unsigned int source_location_id;
-/* Fold __builtin_source_location () call. LOC is the location
- of the call. */
+/* Fold the __builtin_source_location () call T. */
tree
-fold_builtin_source_location (location_t loc)
+fold_builtin_source_location (const_tree t)
{
- if (source_location_impl == NULL_TREE)
- {
- auto_diagnostic_group d;
- source_location_impl = get_source_location_impl_type (loc);
- if (source_location_impl == error_mark_node)
- inform (loc, "evaluating %qs", "__builtin_source_location");
- }
+ gcc_assert (TREE_CODE (t) == CALL_EXPR);
+ /* TREE_TYPE (t) is const std::source_location::__impl* */
+ tree source_location_impl = TREE_TYPE (TREE_TYPE (t));
if (source_location_impl == error_mark_node)
return build_zero_cst (const_ptr_type_node);
+ gcc_assert (CLASS_TYPE_P (source_location_impl)
+ && id_equal (TYPE_IDENTIFIER (source_location_impl), "__impl"));
+
+ location_t loc = EXPR_LOCATION (t);
if (source_location_table == NULL)
source_location_table
= hash_table <source_location_table_entry_hash>::create_ggc (64);
@@ -3427,7 +3424,7 @@ fold_builtin_source_location (location_t loc)
entryp->var = var;
}
- return build_fold_addr_expr_with_type_loc (loc, var, const_ptr_type_node);
+ return build_fold_addr_expr_with_type_loc (loc, var, TREE_TYPE (t));
}
#include "gt-cp-cp-gimplify.h"
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 0d6c234b3b0..541d760492d 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -235,8 +235,6 @@ enum cp_tree_index
CPTI_PSEUDO_CONTRACT_VIOLATION,
- CPTI_SOURCE_LOCATION_IMPL,
-
CPTI_FALLBACK_DFLOAT32_TYPE,
CPTI_FALLBACK_DFLOAT64_TYPE,
CPTI_FALLBACK_DFLOAT128_TYPE,
@@ -395,9 +393,6 @@ extern GTY(()) tree cp_global_trees[CPTI_MAX];
/* A node which matches any template argument. */
#define any_targ_node cp_global_trees[CPTI_ANY_TARG]
-/* std::source_location::__impl class. */
-#define source_location_impl cp_global_trees[CPTI_SOURCE_LOCATION_IMPL]
-
/* Node to indicate default access. This must be distinct from the
access nodes in tree.h. */
@@ -8296,7 +8291,8 @@ extern tree process_stmt_hotness_attribute (tree, location_t);
extern tree build_assume_call (location_t, tree);
extern tree process_stmt_assume_attribute (tree, tree, location_t);
extern bool simple_empty_class_p (tree, tree, tree_code);
-extern tree fold_builtin_source_location (location_t);
+extern tree fold_builtin_source_location (const_tree);
+extern tree get_source_location_impl_type ();
/* in name-lookup.cc */
extern tree strip_using_decl (tree);
diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc
index 508156309d9..df74d886b28 100644
--- a/gcc/cp/decl.cc
+++ b/gcc/cp/decl.cc
@@ -4670,9 +4670,13 @@ cxx_init_decl_processing (void)
BUILT_IN_FRONTEND, NULL, NULL_TREE);
set_call_expr_flags (decl, ECF_CONST | ECF_NOTHROW | ECF_LEAF);
- tree cptr_ftype = build_function_type_list (const_ptr_type_node, NULL_TREE);
+ /* The concrete return type of __builtin_source_location is
+ const std::source_location::__impl*, but we can't form the type
+ at this point. So we initially declare it with an auto return
+ type which we then "deduce" from require_deduced_type upon first use. */
+ tree auto_ftype = build_function_type_list (make_auto (), NULL_TREE);
decl = add_builtin_function ("__builtin_source_location",
- cptr_ftype, CP_BUILT_IN_SOURCE_LOCATION,
+ auto_ftype, CP_BUILT_IN_SOURCE_LOCATION,
BUILT_IN_FRONTEND, NULL, NULL_TREE);
set_call_expr_flags (decl, ECF_CONST | ECF_NOTHROW | ECF_LEAF);
@@ -18752,6 +18756,23 @@ require_deduced_type (tree decl, tsubst_flags_t complain)
{
if (undeduced_auto_decl (decl))
{
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ && fndecl_built_in_p (decl, BUILT_IN_FRONTEND)
+ && DECL_FE_FUNCTION_CODE (decl) == CP_BUILT_IN_SOURCE_LOCATION)
+ {
+ /* Set the return type of __builtin_source_location. */
+ tree type = get_source_location_impl_type ();
+ if (type == error_mark_node)
+ {
+ inform (input_location, "using %qs", "__builtin_source_location");
+ return false;
+ }
+ type = cp_build_qualified_type (type, TYPE_QUAL_CONST);
+ type = build_pointer_type (type);
+ apply_deduced_return_type (decl, type);
+ return true;
+ }
+
if (warning_suppressed_p (decl) && seen_error ())
/* We probably already complained about deduction failure. */;
else if (complain & tf_error)
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc10.C b/gcc/testsuite/g++.dg/cpp2a/srcloc10.C
index 1be78d9f7bd..aa8cf98880c 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc10.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc10.C
@@ -10,4 +10,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl' does not contain only non-static data members '_M_file_name', '_M_function_name', '_M_line' and '_M_column'" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc11.C b/gcc/testsuite/g++.dg/cpp2a/srcloc11.C
index abc850fcd43..07281ca0ad0 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc11.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc11.C
@@ -10,4 +10,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl' does not contain only non-static data members '_M_file_name', '_M_function_name', '_M_line' and '_M_column'" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc12.C b/gcc/testsuite/g++.dg/cpp2a/srcloc12.C
index 49a7e569b7f..445c4a13374 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc12.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc12.C
@@ -11,4 +11,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl::_M_file_name' does not have 'const char \\*' type" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc13.C b/gcc/testsuite/g++.dg/cpp2a/srcloc13.C
index ee7b1248354..d63f6c7d932 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc13.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc13.C
@@ -12,4 +12,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl::_M_line' does not have integral type" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc3.C b/gcc/testsuite/g++.dg/cpp2a/srcloc3.C
index 29587e4ebb5..324e03cd548 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc3.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc3.C
@@ -2,4 +2,4 @@
auto x = __builtin_source_location (); // { dg-error "'source_location' is not a member of 'std'" }
// { dg-message "std::source_location' is defined in header '<source_location>'; did you forget to '#include <source_location>'" "" { target *-*-* } .-1 }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-2 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-2 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc4.C b/gcc/testsuite/g++.dg/cpp2a/srcloc4.C
index c10f64b95d2..9e92c449fc3 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc4.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc4.C
@@ -5,4 +5,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'void std::source_location\\(\\)' is not a type" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc5.C b/gcc/testsuite/g++.dg/cpp2a/srcloc5.C
index ce7170b6dce..ed4b9351f74 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc5.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc5.C
@@ -6,4 +6,4 @@ namespace std {
auto x = __builtin_source_location (); // { dg-error "'std::source_location'\[^\n\r]*is not a class type" }
// { dg-error "'__impl' is not a member of 'std::source_location'" "" { target *-*-* } .-1 }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-2 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-2 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc6.C b/gcc/testsuite/g++.dg/cpp2a/srcloc6.C
index 89c6887cb46..bec51e290b2 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc6.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc6.C
@@ -6,4 +6,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'__impl' is not a member of 'std::source_location'" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc7.C b/gcc/testsuite/g++.dg/cpp2a/srcloc7.C
index ef56edf9426..c81fa63f418 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc7.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc7.C
@@ -7,4 +7,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl\\(\\)' is not a type" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc8.C b/gcc/testsuite/g++.dg/cpp2a/srcloc8.C
index caef812b464..158cc3f93d1 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc8.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc8.C
@@ -7,4 +7,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl()' is not a class type" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/cpp2a/srcloc9.C b/gcc/testsuite/g++.dg/cpp2a/srcloc9.C
index 47fce003913..618e0935632 100644
--- a/gcc/testsuite/g++.dg/cpp2a/srcloc9.C
+++ b/gcc/testsuite/g++.dg/cpp2a/srcloc9.C
@@ -8,4 +8,4 @@ namespace std {
}
auto x = __builtin_source_location (); // { dg-error "'std::source_location::__impl' does not contain only non-static data members '_M_file_name', '_M_function_name', '_M_line' and '_M_column'" }
-// { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
+// { dg-message "using '__builtin_source_location'" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/g++.dg/modules/pr100881_a.C b/gcc/testsuite/g++.dg/modules/pr100881_a.C
new file mode 100644
index 00000000000..95546932dca
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/pr100881_a.C
@@ -0,0 +1,34 @@
+// PR c++/100881
+// { dg-additional-options "-std=c++20 -fmodules-ts" }
+// { dg-module-cmi pr100881 }
+module;
+#include <source_location>
+export module pr100881;
+
+export
+consteval int
+current_line_fn(const std::source_location& loc = std::source_location::current())
+{
+ return loc.line();
+}
+
+export
+struct current_line_cls
+{
+ int line = std::source_location::current().line();
+};
+
+export
+template<class T>
+consteval int
+current_line_fn_tmpl(const std::source_location& loc = std::source_location::current())
+{
+ return loc.line();
+}
+
+export
+template<class T>
+struct current_line_cls_tmpl
+{
+ int line = std::source_location::current().line();
+};
diff --git a/gcc/testsuite/g++.dg/modules/pr100881_b.C b/gcc/testsuite/g++.dg/modules/pr100881_b.C
new file mode 100644
index 00000000000..7f25b21b354
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/pr100881_b.C
@@ -0,0 +1,8 @@
+// PR c++/100881
+// { dg-additional-options "-std=c++20 -fmodules-ts" }
+import pr100881;
+
+static_assert(current_line_fn() == 5);
+static_assert(current_line_cls{}.line == 6);
+static_assert(current_line_fn_tmpl<int>() == 7);
+static_assert(current_line_cls_tmpl<int>{}.line == 8);
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2022-12-19 20:39 [gcc r13-4800] c++: modules and std::source_location::current() def arg [PR100881] Patrick Palka
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