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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: 3.6.1
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Component/s: Portability
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Labels:None
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Environment:macOS 11.0.1 RC, Xcode 12.2 RC, Apple arm64 Development Test Kit machine
The error message seen when building on macOS on arm64 (sometimes called aarch64) is:
src/third_party/catch/include/catch.hpp:8122:13: error: invalid token in expression
CATCH_BREAK_INTO_DEBUGGER();
^
src/third_party/catch/include/catch.hpp:7834:79: note: expanded from macro 'CATCH_BREAK_INTO_DEBUGGER'
#define CATCH_BREAK_INTO_DEBUGGER() []{ if( Catch::isDebuggerActive() ) { CATCH_TRAP(); } }()
^
src/third_party/catch/include/catch.hpp:7813:34: note: expanded from macro 'CATCH_TRAP'
#define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
^
<inline asm>:1:6: note: instantiated into assembly here
int $3
^
catch.hpp contains this code:
#ifdef CATCH_PLATFORM_MAC
#define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
Note the absence of any conditional for different assembly code for different architectures or fallback non-assembly code for unknown architectures—which is present in the subsequent CATCH_PLATFORM_LINUX block. (Why do you need different blocks for macOS and Linux?)