WillAyd opened a new issue, #41891:
URL: https://github.com/apache/arrow/issues/41891
### Describe the bug, including details regarding any error messages,
version, and platform.
When going through a POC with Meson I noticed the following types of
warnings appearing in a standard build:
```sh
../subprojects/rapidjson-1.1.0/include/rapidjson/document.h:1952:24:
warning: ‘void* memcpy(void*, const void*, size_t)’ writing to an object of
type ‘arrow::rapidjson::GenericValue<arrow::rapidjson::UTF8<> >::Member’ {aka
‘struct arrow::rapidjson::GenericMember<arrow::rapidjson::UTF8<>,
arrow::rapidjson::MemoryPoolAllocator<> >’} with no trivial copy-assignment;
use copy-assignment instead [-Wclass-memaccess]
1952 | std::memcpy(m, members, count * sizeof(Member));
...
../src/arrow/util/utf8_internal.h:185:44: warning: this statement may fall
through [-Wimplicit-fallthrough=]
185 | state = internal::ValidateOneUTF8Byte(data[size - 7], state);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
../src/arrow/util/utf8_internal.h:186:5: note: here
186 | case 6:
| ^~~~
../src/arrow/util/utf8_internal.h:187:44: warning: this statement may fall
through [-Wimplicit-fallthrough=]
187 | state = internal::ValidateOneUTF8Byte(data[size - 6], state);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
../src/arrow/util/utf8_internal.h:188:5: note: here
188 | case 5:
```
Should be easy enough to clean up
### Component(s)
C++
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