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* gpgscm: Build well even if NDEBUG defined.NIIBE Yutaka2019-02-251-1/+3
| | | | | | | | | | | | | | | | * gpgscm/scheme.c (gc_reservation_failure): Fix adding ";". [!NDEBUG] (scheme_init_custom_alloc): Don't init seserved_lineno. -- Cherry icked from master commit of: e140c6d4f581be1a60a34b67b16430452f3987e8 In some build environment, NDEBUG is defined (although it's bad practice). This change supports such a situation. GnuPG-bug-id: 3959 Signed-off-by: NIIBE Yutaka <[email protected]>
* Silence compiler warnings new with gcc 8.Werner Koch2018-12-181-0/+12
| | | | | | | | | | | | * dirmngr/dns.c: Include gpgrt.h. Silence -Warray-bounds also gcc. * tests/gpgscm/scheme.c: Include gpgrt.h. (Eval_Cycle): Ignore -Wimplicit-fallthrough. -- The funny use of case and labels in the CASE macro seems confuse the fallthrough detection. Signed-off-by: Werner Koch <[email protected]>
* gpgscm: Fix -Wimplicit-fallthrough warnings.Justus Winter2017-08-211-2/+12
| | | | | | | | * tests/gpgscm/scheme.c (CASE): Rearrange so that the case statement is at the front. (Eval_Cycle): Improve fallthrough annotations. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Improve error reporting.Justus Winter2017-06-191-24/+26
| | | | | | | | * tests/gpgscm/init.scm (throw'): Guard against 'args' being atomic. * tests/gpgscm/scheme.c (Eval_Cycle): Remove any superfluous colons in error messages. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix checking for opcode arguments.Justus Winter2017-05-171-1/+2
| | | | | | | | * tests/gpgscm/scheme.c (Eval_Cycle): Update 'pcd' after dispatching an instruction. Fixes-commit: 9c6407d17e0cb9f4a370b1b83e7816577ec7d29d Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Create and re-use frame objects.Justus Winter2017-05-031-28/+113
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct scheme): New field 'frame_freelist'. * tests/gpgscm/scheme.c (enum scheme_types): New type 'T_FRAME'. (type_to_string): Handle new type. (settype): New macro. (gc_disable): Make sure there is at least one frame in the free list. (mark): Handle frame objects. (finalize_cell): Likewise. (dump_stack_initialize): Initialize free list. (dump_stack_free): Simplify. (frame_length): New variable. (dump_stack_make_frame): New function. (frame_slots): Likewise. (frame_payload): New macro. (dump_stack_allocate_frame): New function. (dump_stack_deallocate_frame): Likewise. (dump_stack_preallocate_frame): Likewise. (_s_return): Unpack frame object and deallocate it. (s_save): Wrap state in an frame object. (dump_stack_mark): Mark the free list. -- TinySCHEME being a SECD-machine needs to push frames onto the dump stack. Previously, the dump stack was a list. This required four cells for the spine, as well as up to one additional cell to encode the current opcode. This was quite inefficient despite the fact that we recovered the spine as well as the integer cell. We introduce frame objects, which are a special variant of vectors of length four. Since the length is fixed, this frees up the length field of the vector object to store the unboxed opcode. A frame object now fits in two cells. Saving two or three cells is a mere byproduct, the performance gain comes from increased locality, unboxed opcode representation, and the ability to easily put the objects in a free list, keeping the garbage collector out of the continuous motion of the virtual machine. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge opexe_0.Justus Winter2017-05-031-48/+38
| | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct scheme): Remove field 'op'. * tests/gpgscm/scheme.c (opexe_0): Inline into 'Eval_Cycle'. (_Error_1): Return the opcode to evaluate next. (Error_1): Do not return, but set the opcode and goto dispatch. (Error_0): Likewise. (s_goto): Likewise. (s_return): Likewise. (s_return_enable_gc): Likewise. (s_thread_to): Remove superfluous cast. (_s_return): Return the opcode to evaluate next. (scheme_init_custom_alloc): Adapt to removal of field 'op'. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Refactor cell finalization.Justus Winter2017-04-241-24/+41
| | | | | | | | * tests/gpgscm/scheme.c (finalize_cell): Use switch, return whether the cell may be freed. (gc): Update callsite. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Improve syntax checking.Justus Winter2017-04-241-2/+5
| | | | | | | * tests/gpgscm/scheme.c (opexe_0): Make sure closure arguments are symbols. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Avoid fruitless garbage collection cycles.Justus Winter2017-04-241-8/+8
| | | | | | | | | * tests/gpgscm/scheme-private.h (CELL_MINRECOVER): New macro. * tests/gpgscm/scheme.c (_get_cell): Move the heuristic to get more cells... (gc): ... here where every caller benefits from the optimization. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix opcode dispatch.Justus Winter2017-04-101-2/+2
| | | | | | | * tests/gpgscm/scheme.c (opexe_0): Consider 'op', not 'sc->op'. The former is the opcode we are currently executing. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Mmap script files.Justus Winter2017-04-101-4/+8
| | | | | | | | | * tests/gpgscm/main.c (load): Try to mmap the script. * tests/gpgscm/scheme.c (scheme_load_memory): New function, a generalization of 'scheme_load_string'. * tests/gpgscm/scheme.h (scheme_load_memory): New prototype. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Refactor checking for opcode arguments.Justus Winter2017-04-101-60/+70
| | | | | | | | | * tests/gpgscm/scheme.c (op_code_info): Fix type, add forward declaration. (check_arguments): New function. (Eval_cycle): Use the new function. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Improve syntax dispatch.Justus Winter2017-04-101-58/+36
| | | | | | | | | | * tests/gpgscm/scheme.c (assign_syntax): Add opcode parameter, store opcode in the tag. (syntaxnum): Add sc parameter, retrieve opcode from tag. (opexe_0): Adapt callsite. (scheme_init_custom_alloc): Likewise. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Make tags mandatory.Justus Winter2017-04-101-14/+2
| | | | | | | | | | | | | * tests/gpgscm/opdefines.h: Make tags mandatory. * tests/gpgscm/scheme.c: Likewise. * tests/gpgscm/scheme.h: Likewise. -- Tags provide a constant-time lookup mechanism for almost every object. This is useful for the interpreter itself, and the code for tags is tiny. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Add and use opcode for reversing a list in place.Justus Winter2017-04-101-0/+3
| | | | | | | | | * tests/gpgscm/lib.scm (string-split-pln): Use 'reverse!'. (string-rtrim): Likewise. * tests/gpgscm/opdefines.h (reverse!): New opcode. * tests/gpgscm/scheme.c (opexe_0): Handle new opcode. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Deduplicate code.Justus Winter2017-04-101-50/+28
| | | | | | | | * tests/gpgscm/scheme.c (oblist_add_by_name): Deduplicate. (new_slot_spec_in_env): Likewise. Fixes-commit: 6a3f857224eab108ae38e6259194b01b0ffdad8b Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Move dispatch table into rodata.Justus Winter2017-04-101-12/+13
| | | | | | | | | | | | | | * tests/gpgscm/opdefines.h: Use 0 instead of NULL. * tests/gpgscm/scheme.c (op_code_info): Use char arrays instead of pointers, make arity parameters smaller. (INF_ARG): Adapt. (_OP_DEF): Likewise. (dispatch_table): Likewise. (procname): Likewise. (Eval_cycle): Likewise. (scheme_init_custom_alloc): Likewise. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Use more threaded code.Justus Winter2017-04-101-38/+37
| | | | | | | * tests/gpgscm/scheme.c (opexe_0): Use 's_thread_to' instead of 's_goto' wherever possible. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Remove now obsolete dispatcher function from the opcodes.Justus Winter2017-04-101-5/+2
| | | | | | | | | | | | * tests/gpgscm/opdefines.h: Remove now obsolete dispatcher function from the opcodes. * tests/gpgscm/scheme-private.h (_OP_DEF): Adapt. * tests/gpgscm/scheme.c (dispatch_func): Remove type declaration. (op_code_info): Remove 'func'. (_OP_DEF): Adapt. (Eval_Cycle): Always call 'opexe_0'. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_6'.Justus Winter2017-04-101-19/+5
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_6): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_5'.Justus Winter2017-04-101-18/+0
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_5): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_4'.Justus Winter2017-04-101-12/+3
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_4): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_3'.Justus Winter2017-04-101-56/+45
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_3): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_2'.Justus Winter2017-04-101-62/+52
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_2): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Merge 'opexe_1'.Justus Winter2017-04-101-11/+0
| | | | | | | | | | | | * tests/gpgscm/scheme.c (opexe_1): Merge into 'opexe_0'. * tests/gpgscm/opdefines.h: Adapt. -- Having separate functions to execute opcodes reduces our ability to thread the code and prevents the dispatch_table from being moved to rodata. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Allocate small integers in the rodata section.Justus Winter2017-04-071-30/+11
| | | | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/Makefile.am (gpgscm_SOURCES): Add new file. * tests/gpgscm/scheme-private.h (struct cell): Move number to the top of the union so that we can initialize it. (struct scheme): Remove 'integer_segment'. * tests/gpgscm/scheme.c (initialize_small_integers): Remove function. (small_integers): New variable. (MAX_SMALL_INTEGER): Compute. (mk_small_integer): Adapt. (mark): Avoid marking objects already marked. This allows us to run the algorithm over objects in the rodata section if they are already marked. (scheme_init_custom_alloc): Remove initialization. (scheme_deinit): Remove deallocation. * tests/gpgscm/small-integers.h: New file. -- Allocate small integers from a fixed pool in the rodata section. This spares us the initialization, and deduplicates integers across different processes. It also makes the integers immutable, increasing memory safety. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Make global data constant when possible.Justus Winter2017-04-071-18/+14
| | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct scheme): Make 'vptr' const. * tests/gpgscm/scheme.c (num_zero): Statically initialize and turn into constant. (num_one): Likewise. (charnames): Change type so that it can be stored in rodata. (is_ascii_name): Adapt slightly. (assign_proc): Make argument const char *. (op_code_info): Make some fields const char *. (tests): Make const. (dispatch_table): Make const. At least it can be made read-only after relocation. (Eval_Cycle): Adapt slightly. (vtbl): Make const. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Remove arbitrary limit on number of cell segments.Justus Winter2017-04-071-36/+72
| | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct scheme): Remove fixed-size arrays for cell segments, replace them with a pointer to the new 'struct cell_segment' instead. * tests/gpgscm/scheme.c (struct cell_segment): New definition. (_alloc_cellseg): Allocate the header within the segment, return a pointer to the header. (_dealloc_cellseg): New function. (alloc_cellseg): Insert the segments into a list. (_get_cell): Allocate a new segment if less than a quarter of CELL_SIGSIZE is recovered during garbage collection. (initialize_small_integers): Adapt callsite. (gc): Walk the list of segments. (scheme_init_custom_alloc): Remove initialization of removed field. (scheme_deinit): Adapt deallocation. -- Previously the number of cells that could be allocated was a compile-time limit. Remove this limit. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Avoid mutating integer.Justus Winter2017-04-061-1/+1
| | | | | | | | * tests/gpgscm/scheme.c (opexe_5): Do not modify the integer in-place while printing an vector. Integer objects may be shared, so they must not be mutated. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Initialize unused slots in vectors.Justus Winter2017-04-061-0/+8
| | | | | | | | | | | | * tests/gpgscm/scheme.c (get_vector_object): Initialize unused slots at the end of vectors. -- They should not be used for anything, but let's just initialize them to something benign to be sure. GnuPG-bug-id: 3014 Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix copying values.Justus Winter2017-04-041-2/+52
| | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme.c (copy_value): New function. (mk_tagged_value): Use new function. (opexe_4): Likewise for OP_SAVE_FORCED. -- Occasionally, we need to copy a value from one location in the storage to another. Scheme objects are fine. Some primitive objects, however, require finalization, usually to free resources. For these values, we either make a copy or acquire a reference. Fixes e.g. a double free if a delayed expression evaluating to a string is forced. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Simplify get-output-string operation.Justus Winter2017-04-041-14/+6
| | | | | | * tests/gpgscm/scheme.c (opexe_4): Simplify 'get-output-string'. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Simplify substring operation.Justus Winter2017-04-041-7/+1
| | | | | | * tests/gpgscm/scheme.c (opexe_2): Simplify 'substring'. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Slightly improve the procedure dispatch.Justus Winter2017-04-031-1/+1
| | | | | | | * tests/gpgscm/scheme.c (procnum): Procedures always have an integer number, so we can safely use the cheaper 'ivalue_unchecked'. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Simplify hash tables.Justus Winter2017-03-171-49/+22
| | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme.c (oblist_add_by_name): We now always get a slot. Simplify accordingly. (oblist_find_by_name): Always return the slot. (vector_elem_slot): New function. (new_slot_spec_in_env): We now always get a slot. Remove parameter 'env'. Simplify accordingly. (find_slot_spec_in_env): Always return a slot. (new_slot_in_env): Adapt callsite. (opexe_0): Likewise. (opexe_1): Likewise. (scheme_define): Likewise. -- Now that the ill-devised immediate values framework is gone, there is no need to tag the pointers in vectors anymore. Therefore, we can always return a pointer to the slot in the hash table lookup functions. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Remove framework for immediate values.Justus Winter2017-03-171-40/+29
| | | | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme.c (IMMEDIATE_TAG): Remove macro. (is_immediate): Likewise. (set_immediate): Likewise. (clr_immediate): Likewise. (enum scheme_types): Set the LSB in every value. (fill_vector): Adapt. (vector_elem): Likewise. (set_vector_elem): Likewise. (mark): Likewise. (gc): Test for the LSB to tell typeflags apart from pointers stored in the same memory location. -- Supporting immediate values would require invasive changes to the interpreter and is likely not worth the trouble. On the other hand, tagging pointers in vectors complicated the hash table implementation needlessly. Therefore, I remove this again. This fixes a crash on big endian architectures. GnuPG-bug-id: 2996 Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Use system strlwr if available.Michael Haubenwallner2017-03-071-1/+5
| | | | | | | | * tests/gpgscm/scheme.c: Define local strlwr only when HAVE_STRLWR is not defined in config.h. * tests/gpgscm/scheme-config.h: Remove hack. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Improve parsing.Justus Winter2017-02-281-0/+3
| | | | | | | | * tests/gpgscm/scheme.c (port_increment_current_line): Avoid creating the same integer if the delta is zero. This happens a lot during parsing, and puts pressure on the memory allocator. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix calculating the line number.Justus Winter2017-02-281-2/+2
| | | | | | | | * tests/gpgscm/scheme.c (opexe_5): Only increment the line number on newlines. Fixes-commit: 7cc57e2c63d0fa97569736419db5c76117e7685b Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Track source locations in every kind of ports.Justus Winter2017-02-281-92/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct port): Move location information out of the union. * tests/gpgscm/scheme.c (mark): All ports need marking now. (gc): Likewise all ports on the load stack. (port_clear_location): Adapt accordingly. Also, add an empty function for !SHOW_ERROR_LINE. (port_increment_current_line): Likewise. (port_reset_current_line): Drop function in favor of... (port_init_location): ... this new function. (file_push): Simplify. (file_pop): Likewise. (port_rep_from_filename): Likewise. (port_rep_from_file): Likewise. (port_rep_from_string): Also initialize the location. (port_rep_from_scratch): Likewise. (port_close): Simplify and generalize. (skipspace): Likewise. (token): Likewise. (_Error_1): Generalize. (opexe_5): Likewise. (scheme_deinit): Simplify and generalize. (scheme_load_named_file): Likewise. (scheme_load_string): Also initialize the location. -- This change tracks the location of source code loaded from non-file ports that is used in error messages. It also simplifies the code quite a bit. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Tune the hash tables.Justus Winter2017-01-311-3/+5
| | | | | | | | | | * tests/gpgscm/scheme.c (oblist_initial_value): Increase the size of the hash table based on the number of symbols used after initializing the interpreter. (new_frame_in_env): Increase the size of the hash table based on the number of variables in the global environement. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Optimize environment lookups and insertions.Justus Winter2017-01-311-50/+116
| | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme.c (pointercmp): New function. (new_slot_spec_in_env): Add and use slot for insertions. (find_slot_spec_in_env): New variant of 'find_slot_in_env' that returns the slot on failures. (find_slot_in_env): Express using the new function. (new_slot_in_env): Update callsite. (opexe_0): Optimize lookup-or-insert. (opexe_1): Likewise. (scheme_define): Likewise. -- Optimize environment lookups by keeping the lists in the hash table or the list sorted. Optimize the insertions by passing the slot computed by the lookup to the insertion. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix build with list environments.Justus Winter2017-01-311-0/+1
| | | | | | | * tests/gpgscm/scheme.c (new_slot_spec_in_env): Provide preallocation inforomation if USE_ALIST_ENV. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Optimize symbol lookups and insertions.Justus Winter2017-01-311-23/+61
| | | | | | | | | | | | | | | | | * tests/gpgscm/scheme.c (oblist_find_by_name): Keep the list of symbols sorted, return the slot where a new symbol must be inserted on lookup failures. (oblist_add_by_name): Add the new symbol at the given slot. (mk_symbol): Adjust callsite. (gensym): Likewise. (assign_syntax): Likewise. -- Optimize symbol lookups by keeping the lists in the hash table (or the list if compiled with USE_OBJECT_LIST) sorted by the symbol names. Optimize the insertions by passing the slot computed by the lookup to the insertion. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix build with object list.Justus Winter2017-01-311-0/+1
| | | | | | | * tests/gpgscm/scheme.c (oblist_add_by_name): Provide preallocation information if USE_OBJECT_LIST. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Remove unused functions.Justus Winter2017-01-311-24/+0
| | | | | | | * tests/gpgscm/scheme.c (check_cell_alloced): Remove function. (check_range_alloced): Likewise. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Use a compact vector representation.Justus Winter2017-01-301-27/+32
| | | | | | | | | | | | | | | | | | | | | | | | | * tests/gpgscm/scheme-private.h (struct cell): Add a compact vector representation. * tests/gpgscm/scheme.c (vector_length): Use new representation. (vector_size): New macro. (get_vector_object): Use the new representation. (fill_vector): Likewise. (vector_elem): Likewise. (set_vector_elem): Likewise. (mark): Likewise. (gc): Likewise. Be careful not to confuse immediate values for type flags. (finalize_cell): Vectors now require finalization. -- Previously, vectors were represented using consecutive cons cells, wasting one word per cell for the type information. Fix that by using a flat array. Previously, a vector of size N required 1 + (n + 1) / 2 cells. Now it uses 1 + (n - 1 + 2) / 3 cells. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Provide framework for immediate values.Justus Winter2017-01-301-23/+39
| | | | | | | | | | | | | * tests/gpgscm/scheme.c (IMMEDIATE_TAG): New macro. ({is,set,clr}_immediate): Likewise. (enum scheme_types): Make type tags disjoint from immediate values. (TYPE_BITS): We need one more bit now. (ADJ,T_MASKTYPE): Compute values. -- Immediate values are disjoint from all type tags and pointers, allowing us to store immediate values in all memory locations. Signed-off-by: Justus Winter <[email protected]>
* gpgscm: Fix setting the line of the first gc reservation.Justus Winter2017-01-301-1/+1
| | | | | | * tests/gpgscm/scheme.c (_gc_disable): Negate guard. Signed-off-by: Justus Winter <[email protected]>
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