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Feature #21539 » debug-export.patch

dalehamel (Dale Hamel), 10/22/2026 12:25 PM

View differences:

internal/compilers.h
# define BITFIELD(type, name, size) unsigned int name : size
#endif
/*
* RUBY_DEBUG_EXPORT(name, target) gives `target`, a function or variable
* defined in the same file, the additional exported name `name`, so that
* tools outside the process, such as profilers, can still find it after
* libruby is stripped. Ruby itself keeps using `target`, so its generated
* code does not change. These names are best-effort debugging aids, not an
* API, and may change or disappear at any time.
*/
#if defined(__linux__) && defined(HAVE_ATTRIBUTE_FUNCTION_ALIAS)
# define RUBY_DEBUG_EXPORT_DECL(decl, target) \
extern decl __attribute__((__alias__(STRINGIZE(target)), __visibility__("protected")));
#else
# define RUBY_DEBUG_EXPORT_DECL(decl, target) /* not supported */
#endif
#define RUBY_DEBUG_EXPORT(name, target) \
RUBY_DEBUG_EXPORT_DECL(__typeof__(target) name, target)
#define RUBY_DEBUG_EXPORT_TLS(name, target) \
RUBY_DEBUG_EXPORT_DECL(RB_THREAD_LOCAL_SPECIFIER __typeof__(target) name, target)
#endif /* INTERNAL_COMPILERS_H */
-- a/symbol.c
++ b/symbol.c
......
rb_symbols_t ruby_global_symbols = {
.next_id = tNEXT_ID,
};
RUBY_DEBUG_EXPORT(ruby_debug_global_symbols, ruby_global_symbols)
struct sym_set_static_sym_entry {
VALUE sym;
-- a/vm.c
++ b/vm.c
......
#ifdef RB_THREAD_LOCAL_SPECIFIER
RB_THREAD_LOCAL_SPECIFIER rb_execution_context_t *ruby_current_ec;
RUBY_DEBUG_EXPORT_TLS(ruby_debug_current_ec, ruby_current_ec)
#ifdef RUBY_NT_SERIAL
RB_THREAD_LOCAL_SPECIFIER rb_atomic_t ruby_nt_serial;
......
EC_POP_TAG();
return result;
}
RUBY_DEBUG_EXPORT(ruby_debug_vm_exec, vm_exec)
static inline VALUE
vm_exec_loop(rb_execution_context_t *ec, enum ruby_tag_type state,
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