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support creating new mem bio of length 0

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This commit is contained in:
Jacob Barthelmeh
2022-03-28 15:52:42 -06:00
parent 12349f39e6
commit f7f94cede0
2 changed files with 4 additions and 1 deletions
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2
src/bio.c
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@@ -2537,7 +2537,7 @@ int wolfSSL_BIO_flush(WOLFSSL_BIO* bio)
len = (int)XSTRLEN((const char*)buf) + 1; len = (int)XSTRLEN((const char*)buf) + 1;
} }
if (wolfSSL_BUF_MEM_resize(bio->mem_buf, len) == 0) { if (len > 0 && wolfSSL_BUF_MEM_resize(bio->mem_buf, len) == 0) {
wolfSSL_BIO_free(bio); wolfSSL_BIO_free(bio);
return NULL; return NULL;
} }

3
tests/api.c
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@@ -39123,6 +39123,9 @@ static void test_wolfSSL_BIO_write(void)
BIO_set_retry_read(bio); BIO_set_retry_read(bio);
BIO_free_all(bio); /* frees bio64s also */ BIO_free_all(bio); /* frees bio64s also */
AssertNotNull(bio = BIO_new_mem_buf(out, 0));
AssertIntEQ(BIO_write(bio, msg, sizeof(msg)), sizeof(msg));
BIO_free(bio);
printf(resultFmt, passed); printf(resultFmt, passed);
#endif #endif
} }