2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
13 #include <internal/cryptlib_int.h>
14 #include <internal/err.h>
15 #include <internal/err_int.h>
16 #include <openssl/lhash.h>
17 #include <openssl/crypto.h>
18 #include <openssl/buffer.h>
19 #include <openssl/bio.h>
20 #include <openssl/opensslconf.h>
21 #include <internal/thread_once.h>
22 #include "internal/constant_time_locl.h"
24 static void err_load_strings(int lib, ERR_STRING_DATA *str);
26 static void ERR_STATE_free(ERR_STATE *s);
27 #ifndef OPENSSL_NO_ERR
28 static ERR_STRING_DATA ERR_str_libraries[] = {
29 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
30 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
31 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
32 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
33 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
34 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
35 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
36 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
37 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
38 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
39 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
40 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
41 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
42 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
43 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
44 {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
45 {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
46 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
47 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
48 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
49 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
50 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
51 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
52 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
53 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
54 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
55 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
56 {ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
57 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
58 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
59 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
60 {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
61 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
62 {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
66 static ERR_STRING_DATA ERR_str_functs[] = {
67 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
68 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
69 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
70 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
71 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
72 {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
73 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
74 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
75 # ifdef OPENSSL_SYS_WINDOWS
76 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
78 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
79 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
80 {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
81 {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
82 {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
83 {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
84 {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
85 {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
86 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
90 static ERR_STRING_DATA ERR_str_reasons[] = {
91 {ERR_R_SYS_LIB, "system lib"},
92 {ERR_R_BN_LIB, "BN lib"},
93 {ERR_R_RSA_LIB, "RSA lib"},
94 {ERR_R_DH_LIB, "DH lib"},
95 {ERR_R_EVP_LIB, "EVP lib"},
96 {ERR_R_BUF_LIB, "BUF lib"},
97 {ERR_R_OBJ_LIB, "OBJ lib"},
98 {ERR_R_PEM_LIB, "PEM lib"},
99 {ERR_R_DSA_LIB, "DSA lib"},
100 {ERR_R_X509_LIB, "X509 lib"},
101 {ERR_R_ASN1_LIB, "ASN1 lib"},
102 {ERR_R_EC_LIB, "EC lib"},
103 {ERR_R_BIO_LIB, "BIO lib"},
104 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
105 {ERR_R_X509V3_LIB, "X509V3 lib"},
106 {ERR_R_ENGINE_LIB, "ENGINE lib"},
107 {ERR_R_ECDSA_LIB, "ECDSA lib"},
109 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
110 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
112 {ERR_R_FATAL, "fatal"},
113 {ERR_R_MALLOC_FAILURE, "malloc failure"},
114 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
115 "called a function you should not call"},
116 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
117 {ERR_R_INTERNAL_ERROR, "internal error"},
118 {ERR_R_DISABLED, "called a function that was disabled at compile-time"},
119 {ERR_R_INIT_FAIL, "init fail"},
125 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
126 static int set_err_thread_local;
127 static CRYPTO_THREAD_LOCAL err_thread_local;
129 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
130 static CRYPTO_RWLOCK *err_string_lock;
132 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
138 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
139 static int int_err_library_number = ERR_LIB_USER;
141 static unsigned long get_error_values(int inc, int top, const char **file,
142 int *line, const char **data,
145 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
147 unsigned long ret, l;
150 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
151 return (ret ^ ret % 19 * 13);
154 static int err_string_data_cmp(const ERR_STRING_DATA *a,
155 const ERR_STRING_DATA *b)
157 return (int)(a->error - b->error);
160 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
162 ERR_STRING_DATA *p = NULL;
164 CRYPTO_THREAD_read_lock(err_string_lock);
165 if (int_error_hash != NULL)
166 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
167 CRYPTO_THREAD_unlock(err_string_lock);
172 #ifndef OPENSSL_NO_ERR
173 # define NUM_SYS_STR_REASONS 127
174 # define LEN_SYS_STR_REASON 32
176 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
178 * SYS_str_reasons is filled with copies of strerror() results at
179 * initialization. 'errno' values up to 127 should cover all usual errors,
180 * others will be displayed numerically by ERR_error_string. It is crucial
181 * that we have something for each reason code that occurs in
182 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
183 * which always gets an errno value and never one of those 'standard' reason
187 static void build_SYS_str_reasons(void)
189 /* OPENSSL_malloc cannot be used here, use static storage instead */
190 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
194 CRYPTO_THREAD_write_lock(err_string_lock);
196 CRYPTO_THREAD_unlock(err_string_lock);
200 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
201 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
203 str->error = (unsigned long)i;
204 if (str->string == NULL) {
205 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
206 if (openssl_strerror_r(i, *dest, sizeof(*dest)))
209 if (str->string == NULL)
210 str->string = "unknown";
214 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
215 * required by ERR_load_strings.
220 CRYPTO_THREAD_unlock(err_string_lock);
224 #define err_clear_data(p,i) \
226 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
228 OPENSSL_free((p)->err_data[i]); \
229 (p)->err_data[i]=NULL; \
231 (p)->err_data_flags[i]=0; \
234 #define err_clear(p,i) \
236 (p)->err_flags[i]=0; \
237 (p)->err_buffer[i]=0; \
238 err_clear_data(p,i); \
239 (p)->err_file[i]=NULL; \
240 (p)->err_line[i]= -1; \
243 static void ERR_STATE_free(ERR_STATE *s)
250 for (i = 0; i < ERR_NUM_ERRORS; i++) {
251 err_clear_data(s, i);
256 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
258 if (!OPENSSL_init_crypto(0, NULL))
260 err_string_lock = CRYPTO_THREAD_lock_new();
261 return err_string_lock != NULL;
264 void err_cleanup(void)
266 if (set_err_thread_local != 0)
267 CRYPTO_THREAD_cleanup_local(&err_thread_local);
268 CRYPTO_THREAD_lock_free(err_string_lock);
269 err_string_lock = NULL;
272 int ERR_load_ERR_strings(void)
274 #ifndef OPENSSL_NO_ERR
275 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
278 err_load_strings(0, ERR_str_libraries);
279 err_load_strings(0, ERR_str_reasons);
280 err_load_strings(ERR_LIB_SYS, ERR_str_functs);
281 build_SYS_str_reasons();
282 err_load_strings(ERR_LIB_SYS, SYS_str_reasons);
287 static void err_load_strings(int lib, ERR_STRING_DATA *str)
289 CRYPTO_THREAD_write_lock(err_string_lock);
290 if (int_error_hash == NULL)
291 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
292 err_string_data_cmp);
293 if (int_error_hash != NULL) {
294 for (; str->error; str++) {
296 str->error |= ERR_PACK(lib, 0, 0);
297 (void)lh_ERR_STRING_DATA_insert(int_error_hash, str);
300 CRYPTO_THREAD_unlock(err_string_lock);
303 int ERR_load_strings(int lib, ERR_STRING_DATA *str)
305 if (ERR_load_ERR_strings() == 0)
307 err_load_strings(lib, str);
311 int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
313 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
316 CRYPTO_THREAD_write_lock(err_string_lock);
317 if (int_error_hash != NULL) {
318 for (; str->error; str++) {
320 str->error |= ERR_PACK(lib, 0, 0);
321 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
324 CRYPTO_THREAD_unlock(err_string_lock);
329 void err_free_strings_int(void)
331 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
334 CRYPTO_THREAD_write_lock(err_string_lock);
335 lh_ERR_STRING_DATA_free(int_error_hash);
336 int_error_hash = NULL;
337 CRYPTO_THREAD_unlock(err_string_lock);
340 /********************************************************/
342 void ERR_put_error(int lib, int func, int reason, const char *file, int line)
348 * In the BS2000-OSD POSIX subsystem, the compiler generates path names
349 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
350 * something sensible. @@@ We shouldn't modify a const string, though.
352 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
355 /* Skip the "*POSIX(" prefix */
356 file += sizeof("*POSIX(") - 1;
357 end = &file[strlen(file) - 1];
360 /* Optional: use the basename of the path only. */
361 if ((end = strrchr(file, '/')) != NULL)
365 es = ERR_get_state();
369 es->top = (es->top + 1) % ERR_NUM_ERRORS;
370 if (es->top == es->bottom)
371 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
372 es->err_flags[es->top] = 0;
373 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
374 es->err_file[es->top] = file;
375 es->err_line[es->top] = line;
376 err_clear_data(es, es->top);
379 void ERR_clear_error(void)
384 es = ERR_get_state();
388 for (i = 0; i < ERR_NUM_ERRORS; i++) {
391 es->top = es->bottom = 0;
394 unsigned long ERR_get_error(void)
396 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
399 unsigned long ERR_get_error_line(const char **file, int *line)
401 return (get_error_values(1, 0, file, line, NULL, NULL));
404 unsigned long ERR_get_error_line_data(const char **file, int *line,
405 const char **data, int *flags)
407 return (get_error_values(1, 0, file, line, data, flags));
410 unsigned long ERR_peek_error(void)
412 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
415 unsigned long ERR_peek_error_line(const char **file, int *line)
417 return (get_error_values(0, 0, file, line, NULL, NULL));
420 unsigned long ERR_peek_error_line_data(const char **file, int *line,
421 const char **data, int *flags)
423 return (get_error_values(0, 0, file, line, data, flags));
426 unsigned long ERR_peek_last_error(void)
428 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
431 unsigned long ERR_peek_last_error_line(const char **file, int *line)
433 return (get_error_values(0, 1, file, line, NULL, NULL));
436 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
437 const char **data, int *flags)
439 return (get_error_values(0, 1, file, line, data, flags));
442 static unsigned long get_error_values(int inc, int top, const char **file,
443 int *line, const char **data,
450 es = ERR_get_state();
464 return ERR_R_INTERNAL_ERROR;
467 if (es->bottom == es->top)
470 i = es->top; /* last error */
472 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
474 ret = es->err_buffer[i];
477 es->err_buffer[i] = 0;
480 if ((file != NULL) && (line != NULL)) {
481 if (es->err_file[i] == NULL) {
486 *file = es->err_file[i];
488 *line = es->err_line[i];
494 err_clear_data(es, i);
497 if (es->err_data[i] == NULL) {
502 *data = es->err_data[i];
504 *flags = es->err_data_flags[i];
510 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
512 char lsbuf[64], fsbuf[64], rsbuf[64];
513 const char *ls, *fs, *rs;
514 unsigned long l, f, r;
521 r = ERR_GET_REASON(e);
523 ls = ERR_lib_error_string(e);
524 fs = ERR_func_error_string(e);
525 rs = ERR_reason_error_string(e);
528 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
530 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
532 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
534 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf,
535 fs ? fs : fsbuf, rs ? rs : rsbuf);
536 if (strlen(buf) == len - 1) {
538 * output may be truncated; make sure we always have 5
539 * colon-separated fields, i.e. 4 colons ...
542 if (len > NUM_COLONS) { /* ... if possible */
546 for (i = 0; i < NUM_COLONS; i++) {
547 char *colon = strchr(s, ':');
548 if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) {
550 * set colon no. i at last possible position (buf[len-1]
551 * is the terminating 0)
553 colon = &buf[len - 1] - NUM_COLONS + i;
563 * ERR_error_string_n should be used instead for ret != NULL as
564 * ERR_error_string cannot know how large the buffer is
566 char *ERR_error_string(unsigned long e, char *ret)
568 static char buf[256];
572 ERR_error_string_n(e, ret, 256);
577 const char *ERR_lib_error_string(unsigned long e)
579 ERR_STRING_DATA d, *p;
582 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
587 d.error = ERR_PACK(l, 0, 0);
588 p = int_err_get_item(&d);
589 return ((p == NULL) ? NULL : p->string);
592 const char *ERR_func_error_string(unsigned long e)
594 ERR_STRING_DATA d, *p;
597 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
603 d.error = ERR_PACK(l, f, 0);
604 p = int_err_get_item(&d);
605 return ((p == NULL) ? NULL : p->string);
608 const char *ERR_reason_error_string(unsigned long e)
610 ERR_STRING_DATA d, *p = NULL;
613 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
618 r = ERR_GET_REASON(e);
619 d.error = ERR_PACK(l, 0, r);
620 p = int_err_get_item(&d);
622 d.error = ERR_PACK(0, 0, r);
623 p = int_err_get_item(&d);
625 return ((p == NULL) ? NULL : p->string);
628 void err_delete_thread_state(void)
630 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
634 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
635 ERR_STATE_free(state);
638 #if OPENSSL_API_COMPAT < 0x10100000L
639 void ERR_remove_thread_state(void *dummy)
644 #if OPENSSL_API_COMPAT < 0x10000000L
645 void ERR_remove_state(unsigned long pid)
650 DEFINE_RUN_ONCE_STATIC(err_do_init)
652 set_err_thread_local = 1;
653 return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
656 ERR_STATE *ERR_get_state(void)
660 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
663 if (!RUN_ONCE(&err_init, err_do_init))
666 state = CRYPTO_THREAD_get_local(&err_thread_local);
667 if (state == (ERR_STATE*)-1)
671 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
674 if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
675 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
679 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
680 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
681 ERR_STATE_free(state);
682 CRYPTO_THREAD_set_local(&err_thread_local, NULL);
686 /* Ignore failures from these */
687 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
694 * err_shelve_state returns the current thread local error state
695 * and freezes the error module until err_unshelve_state is called.
697 int err_shelve_state(void **state)
699 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
702 if (!RUN_ONCE(&err_init, err_do_init))
705 *state = CRYPTO_THREAD_get_local(&err_thread_local);
706 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
713 * err_unshelve_state restores the error state that was returned
714 * by err_shelve_state previously.
716 void err_unshelve_state(void* state)
718 if (state != (void*)-1)
719 CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
722 int ERR_get_next_error_library(void)
726 if (!RUN_ONCE(&err_string_init, do_err_strings_init))
729 CRYPTO_THREAD_write_lock(err_string_lock);
730 ret = int_err_library_number++;
731 CRYPTO_THREAD_unlock(err_string_lock);
735 void ERR_set_error_data(char *data, int flags)
740 es = ERR_get_state();
746 err_clear_data(es, i);
747 es->err_data[i] = data;
748 es->err_data_flags[i] = flags;
751 void ERR_add_error_data(int num, ...)
755 ERR_add_error_vdata(num, args);
759 void ERR_add_error_vdata(int num, va_list args)
765 str = OPENSSL_malloc(s + 1);
771 for (i = 0; i < num; i++) {
772 a = va_arg(args, char *);
773 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
778 p = OPENSSL_realloc(str, s + 1);
785 OPENSSL_strlcat(str, a, (size_t)s + 1);
788 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
791 int ERR_set_mark(void)
795 es = ERR_get_state();
799 if (es->bottom == es->top)
801 es->err_flags[es->top] |= ERR_FLAG_MARK;
805 int ERR_pop_to_mark(void)
809 es = ERR_get_state();
813 while (es->bottom != es->top
814 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
815 err_clear(es, es->top);
818 es->top = ERR_NUM_ERRORS - 1;
821 if (es->bottom == es->top)
823 es->err_flags[es->top] &= ~ERR_FLAG_MARK;
831 * uintptr_t is the answer, but unfortunately C89, current "least common
832 * denominator" doesn't define it. Most legacy platforms typedef it anyway,
833 * so that attempt to fill the gaps means that one would have to identify
834 * that track these gaps, which would be undesirable. Macro it is...
836 #if defined(__VMS) && __INITIAL_POINTER_SIZE==64
838 * But we can't use size_t on VMS, because it adheres to sizeof(size_t)==4
839 * even in 64-bit builds, which means that it won't work as mask.
841 # define UINTPTR_T unsigned long long
843 # define UINTPTR_T size_t
846 void err_clear_last_constant_time(int clear)
851 es = ERR_get_state();
857 es->err_flags[top] &= ~(0 - clear);
858 es->err_buffer[top] &= ~(0UL - clear);
859 es->err_file[top] = (const char *)((UINTPTR_T)es->err_file[top] &
860 ~((UINTPTR_T)0 - clear));
861 es->err_line[top] |= 0 - clear;
863 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS;