P4
My Mac was updated recently to Xcode 9.3. This new version gets a hiccup on the following line:
hs/src/hotspot/share/gc/g1/heapRegionSet.hpp:125:5: error: macro expansion producing 'defined' has undefined behavior [-Werror,-Wexpansion-to-defined]
#if HEAP_REGION_SET_FORCE_VERIFY
hs/src/hotspot/share/gc/g1/heapRegionSet.hpp:53:38: note: expanded from macro 'HEAP_REGION_SET_FORCE_VERIFY'
#define HEAP_REGION_SET_FORCE_VERIFY defined(ASSERT)
Switching back to Xcode 9.2 makes the error go away. However, the question remains: does the preprocessor do the right thing, i.e. recursively substitute the #defines?
This is a duplicate ofJDK-8200550.
hs/src/hotspot/share/gc/g1/heapRegionSet.hpp:125:5: error: macro expansion producing 'defined' has undefined behavior [-Werror,-Wexpansion-to-defined]
#if HEAP_REGION_SET_FORCE_VERIFY
hs/src/hotspot/share/gc/g1/heapRegionSet.hpp:53:38: note: expanded from macro 'HEAP_REGION_SET_FORCE_VERIFY'
#define HEAP_REGION_SET_FORCE_VERIFY defined(ASSERT)
Switching back to Xcode 9.2 makes the error go away. However, the question remains: does the preprocessor do the right thing, i.e. recursively substitute the #defines?
This is a duplicate of
- duplicates
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JDK-8200550 Xcode 9.3 produce warning -Wexpansion-to-defined
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- Closed
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- relates to
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- Closed
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