merge revision(s) bbf1130, 43dbb9a, 2bb6fe3, 7c9dd0e: [Backport #21629]

	[PATCH] Add `RBIMPL_ATTR_NONSTRING_ARRAY()` macro for GCC 15

	[PATCH] [Bug #21629] Enable `nonstring` attribute on clang 21

	[PATCH] [Bug #21629] Initialize `struct RString`

	[PATCH] [Bug #21629] Initialize `struct RArray`

Author: k0kubun

enc/trans/iso2022.trans

@@ -437,7 +437,7 @@ rb_cp50221_encoder = {
 
 /* JIS0201 to JIS0208 conversion table */
 enum {tbl0208_num = 0xDF - 0xA1 + 1};
-RBIMPL_ATTR_NONSTRING() static const char tbl0208[tbl0208_num][2] = {
+RBIMPL_ATTR_NONSTRING_ARRAY() static const char tbl0208[tbl0208_num][2] = {
     "\x21\x23", "\x21\x56", "\x21\x57", "\x21\x22",
     "\x21\x26", "\x25\x72", "\x25\x21", "\x25\x23",
     "\x25\x25", "\x25\x27", "\x25\x29", "\x25\x63",

include/ruby/internal/attr/nonstring.h

@@ -25,8 +25,16 @@
 /** Wraps (or simulates) `__attribute__((nonstring))` */
 #if RBIMPL_HAS_ATTRIBUTE(nonstring)
 # define RBIMPL_ATTR_NONSTRING() __attribute__((nonstring))
+# if RBIMPL_COMPILER_SINCE(GCC, 15, 0, 0)
+#   define RBIMPL_ATTR_NONSTRING_ARRAY() RBIMPL_ATTR_NONSTRING()
+# elif RBIMPL_COMPILER_SINCE(Clang, 21, 0, 0)
+#   define RBIMPL_ATTR_NONSTRING_ARRAY() RBIMPL_ATTR_NONSTRING()
+# else
+#   define RBIMPL_ATTR_NONSTRING_ARRAY() /* void */
+# endif
 #else
 # define RBIMPL_ATTR_NONSTRING() /* void */
+# define RBIMPL_ATTR_NONSTRING_ARRAY() /* void */
 #endif
 
 #endif /* RBIMPL_ATTR_NONSTRING_H */

symbol.c

@@ -156,7 +156,7 @@ rb_id_attrset(ID id)
 
     /* make new symbol and ID */
     if (!(str = lookup_id_str(id))) {
-        RBIMPL_ATTR_NONSTRING() static const char id_types[][8] = {
+        RBIMPL_ATTR_NONSTRING_ARRAY() static const char id_types[][8] = {
             "local",
             "instance",
             "invalid",

version.h

@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 7
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 58
+#define RUBY_PATCHLEVEL 59
 
 #include "ruby/version.h"
 #include "ruby/internal/abi.h"

vm_insnhelper.c

@@ -6259,7 +6259,7 @@ static VALUE
 vm_opt_newarray_include_p(rb_execution_context_t *ec, rb_num_t num, const VALUE *ptr, VALUE target)
 {
     if (BASIC_OP_UNREDEFINED_P(BOP_INCLUDE_P, ARRAY_REDEFINED_OP_FLAG)) {
-        struct RArray fake_ary;
+        struct RArray fake_ary = {RBASIC_INIT};
         VALUE ary = rb_setup_fake_ary(&fake_ary, ptr, num);
         return rb_ary_includes(ary, target);
     }
@@ -6279,7 +6279,7 @@ static VALUE
 vm_opt_newarray_pack_buffer(rb_execution_context_t *ec, rb_num_t num, const VALUE *ptr, VALUE fmt, VALUE buffer)
 {
     if (BASIC_OP_UNREDEFINED_P(BOP_PACK, ARRAY_REDEFINED_OP_FLAG)) {
-        struct RArray fake_ary;
+        struct RArray fake_ary = {RBASIC_INIT};
         VALUE ary = rb_setup_fake_ary(&fake_ary, ptr, num);
         return rb_ec_pack_ary(ec, ary, fmt, (UNDEF_P(buffer) ? Qnil : buffer));
     }