postgresql: fix build (#5618)

* postgresql: fix patch.

* enable afl

* Fix afl build.

* Fix build.sh.

projects/postgresql/add_fuzzers.diff

@@ -1,18 +1,19 @@
 diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
-index cb5a96117f..c9b4880085 100644
+index 825fd55107..f3e2dbbf20 100644
 --- a/src/backend/tcop/postgres.c
 +++ b/src/backend/tcop/postgres.c
-@@ -102,6 +102,9 @@ int			max_stack_depth = 100;
- /* wait N seconds to allow attach from a debugger */
- int			PostAuthDelay = 0;
+@@ -105,6 +105,10 @@ int			PostAuthDelay = 0;
+ /* Time between checks that the client is still connected. */
+ int			client_connection_check_interval = 0;
  
 +#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 +bool        fuzzer_first_run = true;
 +#endif
- 
- 
++
  /* ----------------
-@@ -507,10 +510,15 @@ ReadCommand(StringInfo inBuf)
+  *		private typedefs etc
+  * ----------------
+@@ -454,10 +458,15 @@ ReadCommand(StringInfo inBuf)
  {
  	int			result;
  
@@ -28,7 +29,7 @@ index cb5a96117f..c9b4880085 100644
  	return result;
  }
  
-@@ -3846,6 +3854,11 @@ PostgresMain(int argc, char *argv[],
+@@ -3910,6 +3919,11 @@ PostgresMain(int argc, char *argv[],
  	bool		idle_in_transaction_timeout_enabled = false;
  	bool		idle_session_timeout_enabled = false;
  
@@ -40,7 +41,7 @@ index cb5a96117f..c9b4880085 100644
  	/* Initialize startup process environment if necessary. */
  	if (!IsUnderPostmaster)
  		InitStandaloneProcess(argv[0]);
-@@ -4207,6 +4220,11 @@ PostgresMain(int argc, char *argv[],
+@@ -4271,6 +4285,11 @@ PostgresMain(int argc, char *argv[],
  	if (!ignore_till_sync)
  		send_ready_for_query = true;	/* initially, or after error */
  
@@ -53,11 +54,11 @@ index cb5a96117f..c9b4880085 100644
  	 * Non-error queries loop here.
  	 */
 diff --git a/src/backend/utils/error/elog.c b/src/backend/utils/error/elog.c
-index 80c2672461..c16e0423c5 100644
+index a1ebe06d5b..dfa94013a0 100644
 --- a/src/backend/utils/error/elog.c
 +++ b/src/backend/utils/error/elog.c
-@@ -600,7 +600,9 @@ errfinish(const char *filename, int lineno, const char *funcname)
- 		pq_endcopyout(true);
+@@ -594,7 +594,9 @@ errfinish(const char *filename, int lineno, const char *funcname)
+ 	}
  
  	/* Emit the message to the right places */
 +#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION

projects/postgresql/build.sh

@@ -35,5 +35,9 @@ make clean
 make
 cd src/backend/fuzzer
 make fuzzer
+if [ "$FUZZING_ENGINE" = "afl" ]
+then
+    rm protocol_fuzzer
+fi
 cp *_fuzzer $OUT/
 cp $SRC/postgresql_fuzzer_seed_corpus.zip $OUT/

projects/postgresql/project.yaml

@@ -9,5 +9,6 @@ auto_ccs:
 fuzzing_engines:
   - libfuzzer
   - honggfuzz
+  - afl
 sanitizers:
   - address