[PATCH v2] Fix __builtin_nested_func_ptr_{created,deleted} symbol versions [PR113402]

[Iain Sandoe <iains.gcc@gmail.com>]

Tested on x86_64, aarch64 Darwin21 (which default to heap-based trampolines)
and on x86_64 Darwin19 and Linux (which default to executable stack
trampolines).
OK for trunk?
Iain

--- 8< ---

The symbols for the functions supporting heap-based trampolines were
exported at an incorrect symbol version, the following patch fixes that.

As requested in the PR, this also renames __builtin_nested_func_ptr* to
__gcc_nested_func_ptr*.

	PR libgcc/113402

gcc/ChangeLog:

	* builtins.def
	(BUILT_IN_NESTED_PTR_CREATED): Rename __builtin_nested_func_ptr_created
	to __gcc_nested_func_ptr_created.
	(BUILT_IN_NESTED_PTR_DELETED): Rename __builtin_nested_func_ptr_deleted
	to __gcc_nested_func_ptr_deleted.
	* doc/invoke.texi: Likewise.
	* tree.cc (build_common_builtin_nodes): Likewise.

libgcc/ChangeLog:

	* config/aarch64/heap-trampoline.c: Rename
	__builtin_nested_func_ptr_created to __gcc_nested_func_ptr_created and
	__builtin_nested_func_ptr_deleted to __gcc_nested_func_ptr_deleted.
	* config/i386/heap-trampoline.c: Likewise.
	* libgcc2.h: Likewise.
	* libgcc-std.ver.in (GCC_7.0.0): Likewise and then move
	__gcc_nested_func_ptr_created and
	__gcc_nested_func_ptr_deleted from this symbol version to ...
	(GCC_14.0.0): ... this one.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
Co-authored-by: Jakub Jelinek  <jakub@redhat.com>
---
 gcc/builtins.def                        | 4 ++--
 gcc/doc/invoke.texi                     | 4 ++--
 gcc/tree.cc                             | 8 ++++----
 libgcc/config/aarch64/heap-trampoline.c | 8 ++++----
 libgcc/config/i386/heap-trampoline.c    | 8 ++++----
 libgcc/libgcc-std.ver.in                | 5 ++---
 libgcc/libgcc2.h                        | 4 ++--
 7 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/gcc/builtins.def b/gcc/builtins.def
index 4d97ca0eec9..e8a88ee8bf7 100644
--- a/gcc/builtins.def
+++ b/gcc/builtins.def
@@ -1084,8 +1084,8 @@ DEF_BUILTIN_STUB (BUILT_IN_ADJUST_TRAMPOLINE, "__builtin_adjust_trampoline")
 DEF_BUILTIN_STUB (BUILT_IN_INIT_DESCRIPTOR, "__builtin_init_descriptor")
 DEF_BUILTIN_STUB (BUILT_IN_ADJUST_DESCRIPTOR, "__builtin_adjust_descriptor")
 DEF_BUILTIN_STUB (BUILT_IN_NONLOCAL_GOTO, "__builtin_nonlocal_goto")
-DEF_BUILTIN_STUB (BUILT_IN_NESTED_PTR_CREATED, "__builtin_nested_func_ptr_created")
-DEF_BUILTIN_STUB (BUILT_IN_NESTED_PTR_DELETED, "__builtin_nested_func_ptr_deleted")
+DEF_BUILTIN_STUB (BUILT_IN_NESTED_PTR_CREATED, "__gcc_nested_func_ptr_created")
+DEF_BUILTIN_STUB (BUILT_IN_NESTED_PTR_DELETED, "__gcc_nested_func_ptr_deleted")
 
 /* Implementing __builtin_setjmp.  */
 DEF_BUILTIN_STUB (BUILT_IN_SETJMP_SETUP, "__builtin_setjmp_setup")
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 16e31a3c6db..9727f1de71d 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -19450,8 +19450,8 @@ for nested functions.
 By default, trampolines are generated on stack.  However, certain platforms
 (such as the Apple M1) do not permit an executable stack.  Compiling with
 @option{-ftrampoline-impl=heap} generate calls to
-@code{__builtin_nested_func_ptr_created} and
-@code{__builtin_nested_func_ptr_deleted} in order to allocate and
+@code{__gcc_nested_func_ptr_created} and
+@code{__gcc_nested_func_ptr_deleted} in order to allocate and
 deallocate trampoline space on the executable heap.  These functions are
 implemented in libgcc, and will only be provided on specific targets:
 x86_64 Darwin, x86_64 and aarch64 Linux.  @emph{PLEASE NOTE}: Heap
diff --git a/gcc/tree.cc b/gcc/tree.cc
index 8aee3ef18d8..6fa99ad7fe4 100644
--- a/gcc/tree.cc
+++ b/gcc/tree.cc
@@ -9934,15 +9934,15 @@ build_common_builtin_nodes (void)
 				    ptr_type_node, // void *func
 				    ptr_ptr_type_node, // void **dst
 				    NULL_TREE);
-  local_define_builtin ("__builtin_nested_func_ptr_created", ftype,
+  local_define_builtin ("__gcc_nested_func_ptr_created", ftype,
 			BUILT_IN_NESTED_PTR_CREATED,
-			"__builtin_nested_func_ptr_created", ECF_NOTHROW);
+			"__gcc_nested_func_ptr_created", ECF_NOTHROW);
 
   ftype = build_function_type_list (void_type_node,
 				    NULL_TREE);
-  local_define_builtin ("__builtin_nested_func_ptr_deleted", ftype,
+  local_define_builtin ("__gcc_nested_func_ptr_deleted", ftype,
 			BUILT_IN_NESTED_PTR_DELETED,
-			"__builtin_nested_func_ptr_deleted", ECF_NOTHROW);
+			"__gcc_nested_func_ptr_deleted", ECF_NOTHROW);
 
   ftype = build_function_type_list (void_type_node,
 				    ptr_type_node, ptr_type_node, NULL_TREE);
diff --git a/libgcc/config/aarch64/heap-trampoline.c b/libgcc/config/aarch64/heap-trampoline.c
index f22233987ca..2041fe6aa39 100644
--- a/libgcc/config/aarch64/heap-trampoline.c
+++ b/libgcc/config/aarch64/heap-trampoline.c
@@ -20,8 +20,8 @@ int get_trampolines_per_page (void);
 struct tramp_ctrl_data *allocate_tramp_ctrl (struct tramp_ctrl_data *parent);
 void *allocate_trampoline_page (void);
 
-void __builtin_nested_func_ptr_created (void *chain, void *func, void **dst);
-void __builtin_nested_func_ptr_deleted (void);
+void __gcc_nested_func_ptr_created (void *chain, void *func, void **dst);
+void __gcc_nested_func_ptr_deleted (void);
 
 #if defined(__gnu_linux__)
 static const uint32_t aarch64_trampoline_insns[] = {
@@ -108,7 +108,7 @@ allocate_tramp_ctrl (struct tramp_ctrl_data *parent)
 }
 
 void
-__builtin_nested_func_ptr_created (void *chain, void *func, void **dst)
+__gcc_nested_func_ptr_created (void *chain, void *func, void **dst)
 {
   if (tramp_ctrl_curr == NULL)
     {
@@ -155,7 +155,7 @@ __builtin_nested_func_ptr_created (void *chain, void *func, void **dst)
 }
 
 void
-__builtin_nested_func_ptr_deleted (void)
+__gcc_nested_func_ptr_deleted (void)
 {
   if (tramp_ctrl_curr == NULL)
     abort ();
diff --git a/libgcc/config/i386/heap-trampoline.c b/libgcc/config/i386/heap-trampoline.c
index 4b9f4365868..726cf55277a 100644
--- a/libgcc/config/i386/heap-trampoline.c
+++ b/libgcc/config/i386/heap-trampoline.c
@@ -20,8 +20,8 @@ int get_trampolines_per_page (void);
 struct tramp_ctrl_data *allocate_tramp_ctrl (struct tramp_ctrl_data *parent);
 void *allocate_trampoline_page (void);
 
-void __builtin_nested_func_ptr_created (void *chain, void *func, void **dst);
-void __builtin_nested_func_ptr_deleted (void);
+void __gcc_nested_func_ptr_created (void *chain, void *func, void **dst);
+void __gcc_nested_func_ptr_deleted (void);
 
 static const uint8_t trampoline_insns[] = {
   /* movabs $<chain>,%r11  */
@@ -108,7 +108,7 @@ allocate_tramp_ctrl (struct tramp_ctrl_data *parent)
 }
 
 void
-__builtin_nested_func_ptr_created (void *chain, void *func, void **dst)
+__gcc_nested_func_ptr_created (void *chain, void *func, void **dst)
 {
   if (tramp_ctrl_curr == NULL)
     {
@@ -155,7 +155,7 @@ __builtin_nested_func_ptr_created (void *chain, void *func, void **dst)
 }
 
 void
-__builtin_nested_func_ptr_deleted (void)
+__gcc_nested_func_ptr_deleted (void)
 {
   if (tramp_ctrl_curr == NULL)
     abort ();
diff --git a/libgcc/libgcc-std.ver.in b/libgcc/libgcc-std.ver.in
index a81c5a1142c..ac8f661a08e 100644
--- a/libgcc/libgcc-std.ver.in
+++ b/libgcc/libgcc-std.ver.in
@@ -1943,9 +1943,6 @@ GCC_4.8.0 {
 GCC_7.0.0 {
   __PFX__divmoddi4
   __PFX__divmodti4
-
-  __builtin_nested_func_ptr_created
-  __builtin_nested_func_ptr_deleted
 }
 
 %inherit GCC_14.0.0 GCC_7.0.0
@@ -1960,4 +1957,6 @@ GCC_14.0.0 {
   __PFX__strub_enter
   __PFX__strub_update
   __PFX__strub_leave
+  __gcc_nested_func_ptr_created
+  __gcc_nested_func_ptr_deleted
 }
diff --git a/libgcc/libgcc2.h b/libgcc/libgcc2.h
index 5050456eada..0b67fab637e 100644
--- a/libgcc/libgcc2.h
+++ b/libgcc/libgcc2.h
@@ -29,8 +29,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #pragma GCC visibility push(default)
 #endif
 
-extern void __builtin_nested_func_ptr_created (void *, void *, void **);
-extern void __builtin_nested_func_ptr_deleted (void);
+extern void __gcc_nested_func_ptr_created (void *, void *, void **);
+extern void __gcc_nested_func_ptr_deleted (void);
 
 extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
 extern void __clear_cache (void *, void *);
-- 
2.39.2 (Apple Git-143)