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HAVE_USLEEP compile option not correctly reported by pragma

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HAVE_USLEEP compile option not correctly reported by pragma

Kali Kaneko
The HAVE_USLEEP option is passed to sqlite at compilation time, but not reported
by the pragma:

$ ~/src/sqlite-amalgamation-3180000 10104 ✫  : gcc -DHAVE_USLEEP=1
-DSQLITE_ENABLE_JSON1 -DTHREADSAFE=0 shell.c sqlite3.c -lpthread -ldl -o sqlite    

$ ~/src/sqlite-amalgamation-3180000 10129 ✫  : ./sqlite
SQLite version 3.18.0 2017-03-28 18:48:43
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite> PRAGMA compile_options;
COMPILER=gcc-6.3.0 20170406
DEFAULT_SYNCHRONOUS=2
DEFAULT_WAL_SYNCHRONOUS=2
ENABLE_JSON1
SYSTEM_MALLOC
THREADSAFE=0
sqlite>


The following patch fixes the problem:

sqlite-amalgamation-3180000 $ diff -u sqlite3.c.old sqlite3.c
--- sqlite3.c.old       2017-04-13 18:53:34.374481883 +0200
+++ sqlite3.c   2017-04-13 18:53:49.950559120 +0200
@@ -17595,6 +17595,9 @@
 #if HAVE_ISNAN || SQLITE_HAVE_ISNAN
   "HAVE_ISNAN",
 #endif
+#if HAVE_USLEEP
+  "HAVE_USLEEP",
+#endif
 #if SQLITE_HOMEGROWN_RECURSIVE_MUTEX
   "HOMEGROWN_RECURSIVE_MUTEX",
 #endif


Author of the patch is drebs (at) leap.se, I'm just reporting it here.
More context in this issue: https://0xacab.org/leap/soledad/issues/8835

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We believe in rough consensus and working code.
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