[clang] [compiler-rt] [ubsan] Display correct runtime messages for negative _BitInt (PR #96240)

[Thurston Dang via cfe-commits]

thurstond wrote:

> > One of the tests is failing:
> > ```
> > $ LIT_FILTER=bit-int-pass ninja check-ubsan
> > 
> > compiler-rt/test/ubsan/TestCases/Integer/bit-int-pass.c:31:15: error: CHECK-NOT: excluded string found in input
> > // CHECK-NOT: runtime error:
> >               ^
> > <stdin>:1:110: note: found here
> > compiler-rt/test/ubsan/TestCases/Integer/bit-int-pass.c:11:10: runtime error: implicit conversion from type '_BitInt(37)' of value 60129542145 (64-bit, signed) to type 'uint32_t' (aka 'unsigned int') changed the value to 1 (32-bit, unsigned)
> >                                                                                                              ^~~~~~~~~~~~~~
> > ```
> 
> On what target you observe the failure?

x86-64 Linux

https://github.com/llvm/llvm-project/pull/96240