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nptl_db/thread_dbP.h: fix warn unused result
Fix unused result warnings, detected when _FORTIFY_SOURCE is enabled in glibc. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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@ -61,7 +61,9 @@ enum
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/* Comment out the following for less verbose output. */
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#ifndef NDEBUG
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# define LOG(c) if (__td_debug) write (2, c "\n", strlen (c "\n"))
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# define LOG(c) \
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if (__td_debug) \
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assert (write (2, c "\n", strlen (c "\n")) == strlen (c "\n"))
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extern int __td_debug attribute_hidden;
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#else
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# define LOG(c)
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