anchao opened a new pull request, #7789:
URL: https://github.com/apache/nuttx/pull/7789
## Summary
1. net/icmpv6: fix UBSan warning
```
ubsan_prologue:
================================================================================
ubsan_prologue: UBSAN: misaligned-access in icmpv6/icmpv6_radvertise.c:147:21
handle_misaligned_access: member access within misaligned address 0x56bbc362
for type 'struct icmpv6_router_advertise_s'
handle_misaligned_access: which requires 4 byte alignment
ubsan_epilogue:
================================================================================
ubsan_prologue:
================================================================================
ubsan_prologue: UBSAN: misaligned-access in icmpv6/icmpv6_radvertise.c:169:21
handle_misaligned_access: member access within misaligned address 0x56bbc37a
for type 'struct icmpv6_mtu_s'
handle_misaligned_access: which requires 4 byte alignment
ubsan_epilogue:
================================================================================
ubsan_prologue:
================================================================================
ubsan_prologue: UBSAN: misaligned-access in icmpv6/icmpv6_radvertise.c:178:23
handle_misaligned_access: member access within misaligned address 0x56bbc382
for type 'struct icmpv6_prefixinfo_s'
handle_misaligned_access: which requires 4 byte alignment
ubsan_epilogue:
================================================================================
ubsan_prologue:
================================================================================
ubsan_prologue: UBSAN: misaligned-access in icmpv6/icmpv6_radvertise.c:204:16
handle_misaligned_access: member access within misaligned address 0x56bbc362
for type 'struct icmpv6_router_advertise_s'
handle_misaligned_access: which requires 4 byte alignment
ubsan_epilogue:
================================================================================
```
2. net/icmpv6: fix compile warning
```
icmpv6/icmpv6_input.c: In function ‘icmpv6_input’:
icmpv6/icmpv6_input.c:342:46: warning: taking address of packed member of
‘struct icmpv6_prefixinfo_s’
may result in an unaligned pointer
value [-Waddress-of-packed-member]
342 | prefixopt->prefix,
prefixopt->preflen);
|
```
3. compile/attribute: minor fix for packed struct mismatch
Signed-off-by: chao an <anc...@xiaomi.com>
## Impact
N/A
## Testing
ci check
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