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3c0a136ce4
This patch changes the -Wformat diagnostic to suggest static_cast over
a C-style cast for {,Objective}C++ when recommending the argument be
casted rather than changing the format string.
Before:
```
clang/test/FixIt/format.mm:11:16: warning: format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t' [-Wformat]
11 | NSLog(@"%C", wchar_data); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t'}}
| ~~ ^~~~~~~~~~
| (unsigned short)
```
After:
```
clang/test/FixIt/format.mm:11:16: warning: format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t' [-Wformat]
11 | NSLog(@"%C", wchar_data); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t'}}
| ~~ ^~~~~~~~~~
| static_cast<unsigned short>( )
```
Differential Revision: https://reviews.llvm.org/D153622