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[NFC] [scudo] syntax-check DCHECK arguments if DCHECK is off

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This is a widespread technique, used in at least:

* ABSL: https://github.com/abseil/abseil-cpp/blob/master/absl/log/internal/check_op.h#L52
* Chromium: https://source.chromium.org/chromium/chromium/src/+/main:base/check.h;l=185?q=DCHECK%20f:base&ss=chromium
* Android: https://cs.android.com/android/platform/superproject/+/master:system/libbase/include/android-base/logging.h;drc=bda7f0a0cc945c860713a1dc497919f17fad1651;l=321

Reviewed By: Chia-hungDuan, vitalybuka

Differential Revision: https://reviews.llvm.org/D141713
This commit is contained in:
Florian Mayer 2023-01-13 11:15:37 -08:00
parent fe93da22aa
commit f3f4bc814b
1 changed files with 7 additions and 7 deletions
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14
compiler-rt/lib/scudo/standalone/internal_defs.h
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@ -133,25 +133,25 @@ void NORETURN reportCheckFailed(const char *File, int Line,
#else
#define DCHECK(A) \
do { \
} while (false)
} while (false && (A))
#define DCHECK_EQ(A, B) \
do { \
} while (false)
} while (false && (A) == (B))
#define DCHECK_NE(A, B) \
do { \
} while (false)
} while (false && (A) != (B))
#define DCHECK_LT(A, B) \
do { \
} while (false)
} while (false && (A) < (B))
#define DCHECK_LE(A, B) \
do { \
} while (false)
} while (false && (A) <= (B))
#define DCHECK_GT(A, B) \
do { \
} while (false)
} while (false && (A) > (B))
#define DCHECK_GE(A, B) \
do { \
} while (false)
} while (false && (A) >= (B))
#endif
// The superfluous die() call effectively makes this macro NORETURN.