Bootstrapped and regtested on x86_64-pc-linux-gnu, OK for trunk?
-- >8 --
Static data members marked 'inline' should be emitted in TUs where they
are ODR-used. We need to make sure that statics imported from modules
are correctly added to the 'pending_statics' map so that they get
emitted if needed, otherwise the attached testcase fails to link.
PR c++/112899
gcc/cp/ChangeLog:
* cp-tree.h (note_variable_template_instantiation): Rename to...
(note_static_storage_variable): ...this.
* decl2.cc (note_variable_template_instantiation): Rename to...
(note_static_storage_variable): ...this.
* pt.cc (instantiate_decl): Rename usage of above function.
* module.cc (trees_in::read_var_def): Remember pending statics
that we stream in.
gcc/testsuite/ChangeLog:
* g++.dg/modules/init-4_a.C: New test.
* g++.dg/modules/init-4_b.C: New test.
Signed-off-by: Nathaniel Shead <nathanielosh...@gmail.com>
---
gcc/cp/cp-tree.h | 2 +-
gcc/cp/decl2.cc | 4 ++--
gcc/cp/module.cc | 4 ++++
gcc/cp/pt.cc | 2 +-
gcc/testsuite/g++.dg/modules/init-4_a.C | 9 +++++++++
gcc/testsuite/g++.dg/modules/init-4_b.C | 11 +++++++++++
6 files changed, 28 insertions(+), 4 deletions(-)
create mode 100644 gcc/testsuite/g++.dg/modules/init-4_a.C
create mode 100644 gcc/testsuite/g++.dg/modules/init-4_b.C
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 1979572c365..ebd2850599a 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -7113,7 +7113,7 @@ extern tree maybe_get_tls_wrapper_call (tree);
extern void mark_needed (tree);
extern bool decl_needed_p (tree);
extern void note_vague_linkage_fn (tree);
-extern void note_variable_template_instantiation (tree);
+extern void note_static_storage_variable (tree);
extern tree build_artificial_parm (tree, tree, tree);
extern bool possibly_inlined_p (tree);
extern int parm_index (tree);
diff --git a/gcc/cp/decl2.cc b/gcc/cp/decl2.cc
index 0850d3f5bce..241216b0dfe 100644
--- a/gcc/cp/decl2.cc
+++ b/gcc/cp/decl2.cc
@@ -910,10 +910,10 @@ note_vague_linkage_fn (tree decl)
vec_safe_push (deferred_fns, decl);
}
-/* As above, but for variable template instantiations. */
+/* As above, but for variables with static storage duration. */
void
-note_variable_template_instantiation (tree decl)
+note_static_storage_variable (tree decl)
{
vec_safe_push (pending_statics, decl);
}
diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
index 0bd46414da9..14818131a70 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -11752,6 +11752,10 @@ trees_in::read_var_def (tree decl, tree maybe_template)
DECL_INITIALIZED_P (decl) = true;
if (maybe_dup && DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P
(maybe_dup))
DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl) = true;
+ if (DECL_CONTEXT (decl)
+ && RECORD_OR_UNION_TYPE_P (DECL_CONTEXT (decl))
+ && !DECL_TEMPLATE_INFO (decl))
+ note_static_storage_variable (decl);
}
DECL_INITIAL (decl) = init;
if (!dyn_init)
diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index f7063e09581..ce498750758 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -27150,7 +27150,7 @@ instantiate_decl (tree d, bool defer_ok, bool
expl_inst_class_mem_p)
{
set_instantiating_module (d);
if (variable_template_p (gen_tmpl))
- note_variable_template_instantiation (d);
+ note_static_storage_variable (d);
instantiate_body (td, args, d, false);
}
diff --git a/gcc/testsuite/g++.dg/modules/init-4_a.C
b/gcc/testsuite/g++.dg/modules/init-4_a.C
new file mode 100644
index 00000000000..e0eb97b474e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/init-4_a.C
@@ -0,0 +1,9 @@
+// PR c++/112899
+// { dg-additional-options "-fmodules-ts" }
+// { dg-module-cmi M }
+
+export module M;
+
+export struct A {
+ static constexpr int x = -1;
+};
diff --git a/gcc/testsuite/g++.dg/modules/init-4_b.C
b/gcc/testsuite/g++.dg/modules/init-4_b.C
new file mode 100644
index 00000000000..d28017a1d14
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/init-4_b.C
@@ -0,0 +1,11 @@
+// PR c++/112899
+// { dg-module-do run }
+// { dg-additional-options "-fmodules-ts" }
+
+import M;
+
+int main() {
+ const int& x = A::x;
+ if (x != -1)
+ __builtin_abort();
+}
--
2.43.0
