139     unsigned char tmp_buf[2048];  in mbedtls_x509write_csr_der()  local
147     c = tmp_buf + sizeof( tmp_buf );  in mbedtls_x509write_csr_der()
149     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_extensions( &c, tmp_buf, ctx->extensions ) );  in mbedtls_x509write_csr_der()
153         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );  in mbedtls_x509write_csr_der()
154         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |  in mbedtls_x509write_csr_der()
157         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );  in mbedtls_x509write_csr_der()
158         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |  in mbedtls_x509write_csr_der()
161 …     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( &c, tmp_buf, MBEDTLS_OID_PKCS9_CSR_EXT_REQ,  in mbedtls_x509write_csr_der()
164         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );  in mbedtls_x509write_csr_der()
165         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |  in mbedtls_x509write_csr_der()
169     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );  in mbedtls_x509write_csr_der()
170     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |  in mbedtls_x509write_csr_der()
174                                                 tmp_buf, c - tmp_buf ) );  in mbedtls_x509write_csr_der()
181     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, tmp_buf, ctx->subject ) );  in mbedtls_x509write_csr_der()
186     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, tmp_buf, 0 ) );  in mbedtls_x509write_csr_der()
188     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );  in mbedtls_x509write_csr_der()
189     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |  in mbedtls_x509write_csr_der()