W-M-R opened a new pull request, #16711:
URL: https://github.com/apache/nuttx/pull/16711
## Summary
The above combination of compilation causes the compiler to crash:
#1 0x0000000001fbe154 llvm::sys::CleanupOnSignal(unsigned long)
(clang18/bin/clang-19+0x1fbe154)
#2 0x0000000001f21203 llvm::CrashRecoveryContext::HandleExit(int)
(clang18/bin/clang-19+0x1f21203)
#3 0x0000000001fb7b7e llvm::sys::Process::Exit(int, bool)
(clang18/bin/clang-19+0x1fb7b7e)
#4 0x0000000000b25f0d (clang18/bin/clang-19+0xb25f0d)
................................................................................
................................................................................
This problem occurs in clang18 and above, and there are compilation
instructions that are incompatible with GCC.
By following the recommended v8.1m corresponding fpu modification, no crash
will occur
➜ NX git:(master) ✗ clang --target=arm-none-eabi -mfpu=help
clang: note: available multilibs are:
--target=thumbv8m.main-unknown-none-eabi -mfpu=none
--target=thumbv8m.main-unknown-none-eabi -mfpu=none -fno-exceptions -fno-rtti
--target=thumbv8m.main-unknown-none-eabihf -mfpu=fpv5-sp-d16
--target=thumbv8m.main-unknown-none-eabihf -mfpu=fpv5-sp-d16 -fno-exceptions
-fno-rtti
--target=thumbv8.1m.main-unknown-none-eabi -mfpu=none
--target=thumbv8.1m.main-unknown-none-eabi -mfpu=none -fno-exceptions
-fno-rtti
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+fp16
-mfpu=fp-armv8-fullfp16-sp-d16
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+fp16
-mfpu=fp-armv8-fullfp16-sp-d16 -fno-exceptions -fno-rtti
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+fp16
-mfpu=fp-armv8-fullfp16-d16
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+fp16
-mfpu=fp-armv8-fullfp16-d16 -fno-exceptions -fno-rtti
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+mve
-mfpu=none
--target=thumbv8.1m.main-unknown-none-eabihf -march=thumbv8.1m.main+mve
-mfpu=none -fno-exceptions -fno-rtti
## Impact
No impact
## Testing
ci
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