watchOS builds fail with ASan enabled. ``` In file included from DerivedSources/JavaScriptCore/unified-sources/UnifiedSource7.cpp:1: In file included from ./assembler/MacroAssemblerPrinter.cpp:27: In file included from ./assembler/MacroAssemblerPrinter.h:31: In file included from ./assembler/ProbeContext.h:29: ./assembler/ProbeStack.h:139:5: error: static assertion failed due to requirement 's_chunkSize == (1 << s_chunkSizeShift)': bad chunkSizeShift static_assert(s_chunkSize == (1 << s_chunkSizeShift), "bad chunkSizeShift"); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./assembler/ProbeStack.h:139:31: note: expression evaluates to '4 == 8' static_assert(s_chunkSize == (1 << s_chunkSizeShift), "bad chunkSizeShift"); ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ```
<rdar://problem/111265429>
<rdar://111139868>
It's interesting that we already have a special case for ASAN_ENABLED here, it just doesn't help on watchOS.