libxcb-1.17.0-3.fc42

List of Findings

Error: GCC_ANALYZER_WARNING (CWE-688): [#def1]
libxcb-1.17.0-build/libxcb-1.17.0/src/render.c: scope_hint: In function 'xcb_render_create_picture_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/render.c:941:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#  939|       for(i=0; i<xcb_parts_idx; i++) {
#  940|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#  941|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#  942|           if (0 != xcb_parts[i].iov_len)
#  943|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def2]
libxcb-1.17.0-build/libxcb-1.17.0/src/render.c: scope_hint: In function 'xcb_render_change_picture_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/render.c:1406:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 1404|       for(i=0; i<xcb_parts_idx; i++) {
# 1405|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 1406|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 1407|           if (0 != xcb_parts[i].iov_len)
# 1408|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def3]
libxcb-1.17.0-build/libxcb-1.17.0/src/screensaver.c: scope_hint: In function 'xcb_screensaver_set_attributes_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/screensaver.c:362:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#  360|       for(i=0; i<xcb_parts_idx; i++) {
#  361|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#  362|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#  363|           if (0 != xcb_parts[i].iov_len)
#  364|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def4]
libxcb-1.17.0-build/libxcb-1.17.0/src/sync.c: scope_hint: In function 'xcb_sync_create_alarm_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/sync.c:868:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#  866|       for(i=0; i<xcb_parts_idx; i++) {
#  867|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#  868|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#  869|           if (0 != xcb_parts[i].iov_len)
#  870|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def5]
libxcb-1.17.0-build/libxcb-1.17.0/src/sync.c: scope_hint: In function 'xcb_sync_change_alarm_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/sync.c:1212:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 1210|       for(i=0; i<xcb_parts_idx; i++) {
# 1211|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 1212|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 1213|           if (0 != xcb_parts[i].iov_len)
# 1214|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-401): [#def6]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_auth.c: scope_hint: In function '_xcb_get_auth_info'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_auth.c:384:16: warning[-Wanalyzer-malloc-leak]: leak of '*info.name'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_auth.c:50: included_from: Included from here.
#  382|       free(sockname);
#  383|   
#  384|->     info->name = 0;
#  385|       info->namelen = 0;
#  386|       XauDisposeAuth(authptr);

Error: COMPILER_WARNING (CWE-252): [#def7]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c: scope_hint: In function 'read_setup'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:199:13: warning[-Wunused-result]: ignoring return value of 'write' declared with attribute 'warn_unused_result'
#  199 |             write(STDERR_FILENO, xcb_setup_failed_reason(setup), xcb_setup_failed_reason_length(setup));
#      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  197|           {
#  198|               xcb_setup_failed_t *setup = (xcb_setup_failed_t *) c->setup;
#  199|->             write(STDERR_FILENO, xcb_setup_failed_reason(setup), xcb_setup_failed_reason_length(setup));
#  200|               write(STDERR_FILENO, &newline, 1);
#  201|               return 0;

Error: COMPILER_WARNING (CWE-252): [#def8]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:200:13: warning[-Wunused-result]: ignoring return value of 'write' declared with attribute 'warn_unused_result'
#  200 |             write(STDERR_FILENO, &newline, 1);
#      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  198|               xcb_setup_failed_t *setup = (xcb_setup_failed_t *) c->setup;
#  199|               write(STDERR_FILENO, xcb_setup_failed_reason(setup), xcb_setup_failed_reason_length(setup));
#  200|->             write(STDERR_FILENO, &newline, 1);
#  201|               return 0;
#  202|           }

Error: COMPILER_WARNING (CWE-252): [#def9]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:207:13: warning[-Wunused-result]: ignoring return value of 'write' declared with attribute 'warn_unused_result'
#  207 |             write(STDERR_FILENO, xcb_setup_authenticate_reason(setup), xcb_setup_authenticate_reason_length(setup));
#      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  205|           {
#  206|               xcb_setup_authenticate_t *setup = (xcb_setup_authenticate_t *) c->setup;
#  207|->             write(STDERR_FILENO, xcb_setup_authenticate_reason(setup), xcb_setup_authenticate_reason_length(setup));
#  208|               write(STDERR_FILENO, &newline, 1);
#  209|               return 0;

Error: COMPILER_WARNING (CWE-252): [#def10]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:208:13: warning[-Wunused-result]: ignoring return value of 'write' declared with attribute 'warn_unused_result'
#  208 |             write(STDERR_FILENO, &newline, 1);
#      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  206|               xcb_setup_authenticate_t *setup = (xcb_setup_authenticate_t *) c->setup;
#  207|               write(STDERR_FILENO, xcb_setup_authenticate_reason(setup), xcb_setup_authenticate_reason_length(setup));
#  208|->             write(STDERR_FILENO, &newline, 1);
#  209|               return 0;
#  210|           }

Error: GCC_ANALYZER_WARNING (CWE-476): [#def11]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c: scope_hint: In function 'write_vec'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:282:23: warning[-Wanalyzer-null-dereference]: dereference of NULL 'hdr'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:32: included_from: Included from here.
/usr/include/sys/socket.h:33: included_from: Included from here.
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_conn.c:53: included_from: Included from here.
#  280|           struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg);
#  281|   
#  282|->         hdr->cmsg_len = msg.msg_controllen;
#  283|           hdr->cmsg_level = SOL_SOCKET;
#  284|           hdr->cmsg_type = SCM_RIGHTS;

Error: GCC_ANALYZER_WARNING (CWE-787): [#def12]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c: scope_hint: In function 'xcb_send_request_with_fds64'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:292:46: warning[-Wanalyzer-out-of-bounds]: buffer overflow
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:32: included_from: Included from here.
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:292:46: note: write of 1 byte to beyond the end of 'pad'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:292:46: note: valid subscripts for 'pad' are '[0]' to '[2]'
#  290|   
#  291|           /* set the length field. */
#  292|->         ((uint16_t *) vector[0].iov_base)[1] = shortlen;
#  293|           if(!shortlen)
#  294|           {

Error: GCC_ANALYZER_WARNING (CWE-471): [#def13]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:292:46: warning[-Wanalyzer-write-to-const]: write to 'const' object 'pad'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:244:27: note: declared here
#  290|   
#  291|           /* set the length field. */
#  292|->         ((uint16_t *) vector[0].iov_base)[1] = shortlen;
#  293|           if(!shortlen)
#  294|           {

Error: GCC_ANALYZER_WARNING (CWE-126): [#def14]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:295:58: warning[-Wanalyzer-out-of-bounds]: buffer over-read
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:295:58: note: read of 1 byte from after the end of 'pad'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:295:58: note: valid subscripts for 'pad' are '[0]' to '[2]'
#  293|           if(!shortlen)
#  294|           {
#  295|->             prefix[0] = ((uint32_t *) vector[0].iov_base)[0];
#  296|               prefix[1] = ++longlen;
#  297|               vector[0].iov_base = (uint32_t *) vector[0].iov_base + 1;

Error: GCC_ANALYZER_WARNING (CWE-126): [#def15]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:310:69: warning[-Wanalyzer-out-of-bounds]: buffer over-read
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:310:69: note: read of 4 bytes from after the end of 'pad'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:310:69: note: valid subscripts for 'pad' are '[0]' to '[2]'
#  308|        * configuration, but that should be handled here anyway. */
#  309|       if(req->ext && !req->isvoid && !strcmp(req->ext->name, "GLX") &&
#  310|->             ((req->opcode == 17 && ((uint32_t *) vector[0].iov_base)[1] == 0x10004) ||
#  311|                req->opcode == 21))
#  312|           workaround = WORKAROUND_GLX_GET_FB_CONFIGS_BUG;

Error: GCC_ANALYZER_WARNING (CWE-835): [#def16]
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c: scope_hint: In function 'xcb_take_socket'
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:388:15: warning[-Wanalyzer-infinite-loop]: infinite loop
libxcb-1.17.0-build/libxcb-1.17.0/src/xcb_out.c:43: included_from: Included from here.
libxcb-1.17.0-build/libxcb-1.17.0/src/xcbint.h:66:54: note: in definition of macro 'XCB_SEQUENCE_COMPARE'
#  386|        */
#  387|       do
#  388|->         ret = _xcb_out_flush_to(c, c->out.request);
#  389|       while (ret && c->out.request != c->out.request_written);
#  390|       if(ret)

Error: GCC_ANALYZER_WARNING (CWE-688): [#def17]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_input_info_info_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:498:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#  496|       for(i=0; i<xcb_parts_idx; i++) {
#  497|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#  498|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#  499|           if (0 != xcb_parts[i].iov_len)
#  500|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def18]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_feedback_state_data_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:3304:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 3302|       for(i=0; i<xcb_parts_idx; i++) {
# 3303|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 3304|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 3305|           if (0 != xcb_parts[i].iov_len)
# 3306|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def19]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_feedback_ctl_data_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:4053:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 4051|       for(i=0; i<xcb_parts_idx; i++) {
# 4052|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 4053|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 4054|           if (0 != xcb_parts[i].iov_len)
# 4055|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def20]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_input_state_data_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:5353:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 5351|       for(i=0; i<xcb_parts_idx; i++) {
# 5352|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 5353|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 5354|           if (0 != xcb_parts[i].iov_len)
# 5355|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def21]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_change_device_property_items_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:7691:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 7689|       for(i=0; i<xcb_parts_idx; i++) {
# 7690|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 7691|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 7692|           if (0 != xcb_parts[i].iov_len)
# 7693|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def22]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_get_device_property_items_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:8263:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 8261|       for(i=0; i<xcb_parts_idx; i++) {
# 8262|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 8263|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 8264|           if (0 != xcb_parts[i].iov_len)
# 8265|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def23]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_hierarchy_change_data_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:9108:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 9106|       for(i=0; i<xcb_parts_idx; i++) {
# 9107|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 9108|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 9109|           if (0 != xcb_parts[i].iov_len)
# 9110|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def24]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_device_class_data_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:10385:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#10383|       for(i=0; i<xcb_parts_idx; i++) {
#10384|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#10385|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#10386|           if (0 != xcb_parts[i].iov_len)
#10387|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def25]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_xi_change_property_items_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:11885:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#11883|       for(i=0; i<xcb_parts_idx; i++) {
#11884|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#11885|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#11886|           if (0 != xcb_parts[i].iov_len)
#11887|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def26]
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c: scope_hint: In function 'xcb_input_xi_get_property_items_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xinput.c:12453:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#12451|       for(i=0; i<xcb_parts_idx; i++) {
#12452|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#12453|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#12454|           if (0 != xcb_parts[i].iov_len)
#12455|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def27]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_select_events_details_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:2167:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 2165|       for(i=0; i<xcb_parts_idx; i++) {
# 2166|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 2167|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 2168|           if (0 != xcb_parts[i].iov_len)
# 2169|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def28]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_get_map_map_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:3499:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 3497|       for(i=0; i<xcb_parts_idx; i++) {
# 3498|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 3499|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 3500|           if (0 != xcb_parts[i].iov_len)
# 3501|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def29]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_set_map_values_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:4371:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 4369|       for(i=0; i<xcb_parts_idx; i++) {
# 4370|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 4371|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 4372|           if (0 != xcb_parts[i].iov_len)
# 4373|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def30]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_get_names_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:6340:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 6338|       for(i=0; i<xcb_parts_idx; i++) {
# 6339|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 6340|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 6341|           if (0 != xcb_parts[i].iov_len)
# 6342|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def31]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_set_names_values_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:7236:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 7234|       for(i=0; i<xcb_parts_idx; i++) {
# 7235|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 7236|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 7237|           if (0 != xcb_parts[i].iov_len)
# 7238|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def32]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_get_kbd_by_name_replies_types_map_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:8609:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 8607|       for(i=0; i<xcb_parts_idx; i++) {
# 8608|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 8609|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 8610|           if (0 != xcb_parts[i].iov_len)
# 8611|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def33]
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c: scope_hint: In function 'xcb_xkb_get_kbd_by_name_replies_key_names_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xkb.c:9389:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 9387|       for(i=0; i<xcb_parts_idx; i++) {
# 9388|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 9389|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 9390|           if (0 != xcb_parts[i].iov_len)
# 9391|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def34]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_create_window_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:1179:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 1177|       for(i=0; i<xcb_parts_idx; i++) {
# 1178|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 1179|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 1180|           if (0 != xcb_parts[i].iov_len)
# 1181|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def35]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_change_window_attributes_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:1730:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 1728|       for(i=0; i<xcb_parts_idx; i++) {
# 1729|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 1730|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 1731|           if (0 != xcb_parts[i].iov_len)
# 1732|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def36]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_configure_window_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:2657:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 2655|       for(i=0; i<xcb_parts_idx; i++) {
# 2656|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 2657|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 2658|           if (0 != xcb_parts[i].iov_len)
# 2659|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def37]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_create_gc_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:6824:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 6822|       for(i=0; i<xcb_parts_idx; i++) {
# 6823|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 6824|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 6825|           if (0 != xcb_parts[i].iov_len)
# 6826|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def38]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_change_gc_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:7435:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
# 7433|       for(i=0; i<xcb_parts_idx; i++) {
# 7434|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
# 7435|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
# 7436|           if (0 != xcb_parts[i].iov_len)
# 7437|               xcb_tmp += xcb_parts[i].iov_len;

Error: GCC_ANALYZER_WARNING (CWE-688): [#def39]
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c: scope_hint: In function 'xcb_change_keyboard_control_value_list_serialize'
libxcb-1.17.0-build/libxcb-1.17.0/src/xproto.c:12782:13: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL 'xcb_tmp' where non-null expected
<built-in>: note: argument 1 of '__builtin_memcpy' must be non-null
#12780|       for(i=0; i<xcb_parts_idx; i++) {
#12781|           if (0 != xcb_parts[i].iov_base && 0 != xcb_parts[i].iov_len)
#12782|->             memcpy(xcb_tmp, xcb_parts[i].iov_base, xcb_parts[i].iov_len);
#12783|           if (0 != xcb_parts[i].iov_len)
#12784|               xcb_tmp += xcb_parts[i].iov_len;

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