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Khem Raj 8119f18549 libcxxabi: declare __gnu_unwind_frame in cxa_personality (#189787 )

ARM EHABI builds of libcxxabi fail with clang-22+ because
cxa_personality.cpp calls __gnu_unwind_frame without a visible
declaration, triggering:

  error: use of undeclared identifier '__gnu_unwind_frame'

Add an extern "C" forward declaration before the EHABI unwind helper so
the source compiles correctly.

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

2026-04-27 09:35:24 +02:00