[tarantool-patches] Re: [PATCH v1 12/12] sql: use diag_set() to set an error in SQL functions

[Mergen Imeev <imeevma@tarantool.org>]

I moved this patch to the position before "sql: set errors
in VDBE using diag_set()". New patch below.

On Wed, May 15, 2019 at 05:12:09PM +0300, n.pettik wrote:
> 
> > After this patch, all errors in the SQL functions will be set
> > using diag_set().
> > 
> > Closes #4074
> > ---
> > src/box/lua/lua_sql.c |  13 +++--
> > src/box/sql/analyze.c |   6 +--
> > src/box/sql/func.c    | 104 ++++++++++++++++++----------------------
> > src/box/sql/sqlInt.h  |  13 -----
> > src/box/sql/vdbe.c    |  34 +++----------
> > src/box/sql/vdbeInt.h |  28 ++---------
> > src/box/sql/vdbeapi.c | 129 +++++---------------------------------------------
> > src/box/sql/vdbeaux.c |  46 ------------------
> > src/box/sql/vdbemem.c |   9 ++--
> > 9 files changed, 84 insertions(+), 298 deletions(-)
> > 
> > diff --git a/src/box/lua/lua_sql.c b/src/box/lua/lua_sql.c
> > index d28045a..afe4732 100644
> > --- a/src/box/lua/lua_sql.c
> > +++ b/src/box/lua/lua_sql.c
> > @@ -77,13 +77,15 @@ lua_sql_call(sql_context *pCtx, int nVal, sql_value **apVal) {
> > 			lua_pushboolean(L, sql_value_boolean(param));
> > 			break;
> > 		default:
> > -			sql_result_error(pCtx, "Unsupported type passed "
> > -					     "to Lua", -1);
> 
> Please, remove sql_result_error at all: I grepped several
> usages among dead code.
> 
Fixed.

> > +			diag_set(ClientError, ER_SQL_EXECUTE, "Unsupported "\
> > +				 "type passed to Lua");
> > +			pCtx->is_error = true;
> > 			goto error;
> > 		}
> > 
> > diff --git a/src/box/sql/func.c b/src/box/sql/func.c
> > index bb7405e..16c02f1 100644
> > --- a/src/box/sql/func.c
> > +++ b/src/box/sql/func.c
> > @@ -181,13 +181,9 @@ absFunc(sql_context * context, int argc, sql_value ** argv)
> > 			i64 iVal = sql_value_int64(argv[0]);
> > 			if (iVal < 0) {
> > 				if (iVal == SMALLEST_INT64) {
> > -					/* IMP: R-31676-45509 If X is the integer -9223372036854775808
> > -					 * then abs(X) throws an integer overflow error since there is no
> > -					 * equivalent positive 64-bit two complement value.
> > -					 */
> > -					sql_result_error(context,
> > -							     "integer overflow",
> > -							     -1);
> > +					diag_set(ClientError, ER_SQL_EXECUTE,
> > +						 "integer overflow”);
> 
> -> integer is overflowed.
> 
Fixed.

> > +					context->is_error = true;
> > 					return;
> > 				}
> > 				iVal = -iVal;
> > 
> > 
> > 
> > @@ -591,11 +577,11 @@ case_type##ICUFunc(sql_context *context, int argc, sql_value **argv)   \
> > 	 * does not invalidate the _text() pointer.                            \
> > 	 */                                                                    \
> > 	assert(z2 == (char *)sql_value_text(argv[0]));                     \
> > -	if (!z2)                                                               \
> > +	if (z2 == NULL)                                                        \
> > 		return;                                                        \
> 
> Redundant diff.
> 
Fixed.

> > src/box/sql/vdbeInt.h b/src/box/sql/vdbeInt.h
> > index 6aadca2..70a0bab 100644
> > --- a/src/box/sql/vdbeInt.h
> > +++ b/src/box/sql/vdbeInt.h
> > 
> > @@ -300,21 +296,6 @@ mem_apply_numeric_type(struct Mem *record);
> > #endif
> > 
> > 
> > -/*
> >  * The "context" argument for an installable function.  A pointer to an
> >  * instance of this structure is the first argument to the routines used
> >  * implement the SQL functions.
> > @@ -333,9 +314,12 @@ struct sql_context {
> > 	Mem *pMem;		/* Memory cell used to store aggregate context */
> > 	Vdbe *pVdbe;		/* The VM that owns this context */
> > 	int iOp;		/* Instruction number of OP_Function */
> > -	int isError;		/* Error code returned by the function. */
> > +	/*
> > +	 * True, if an error occurred during the execution of the
> > +	 * function.
> > +	 */
> > +	bool is_error;
> 
> I’d better use is_abotred name.
> 
FIxed. Renamed to is_aborted.

> > diff --git a/src/box/sql/vdbemem.c b/src/box/sql/vdbemem.c
> > index f73ea0a..ce0c641 100644
> > --- a/src/box/sql/vdbemem.c
> > +++ b/src/box/sql/vdbemem.c
> > @@ -321,7 +321,6 @@ sqlVdbeMemStringify(Mem * pMem, u8 bForce)
> > int
> > sqlVdbeMemFinalize(Mem * pMem, FuncDef * pFunc)
> > {
> > -	int rc = SQL_OK;
> > 	if (ALWAYS(pFunc && pFunc->xFinalize)) {
> > 		sql_context ctx;
> > 		Mem t;
> > @@ -338,9 +337,9 @@ sqlVdbeMemFinalize(Mem * pMem, FuncDef * pFunc)
> > 		if (pMem->szMalloc > 0)
> > 			sqlDbFree(pMem->db, pMem->zMalloc);
> > 		memcpy(pMem, &t, sizeof(t));
> > -		rc = ctx.isError;
> > +		return ctx.is_error ? SQL_TARANTOOL_ERROR : SQL_OK;
> > 	}
> > -	return rc;
> > +	return SQL_OK;
> 
> Return 0/-1
> 
It is fixed in one of following patches.


New patch:

From bb66ac8360ee312cf8d2047143139bb46441ddf0 Mon Sep 17 00:00:00 2001
Date: Sat, 27 Apr 2019 21:17:19 +0300
Subject: [PATCH] sql: use diag_set() to set an error in SQL functions

After this patch, all errors in the SQL functions will be set
using diag_set().

Closes #4074

diff --git a/src/box/lua/lua_sql.c b/src/box/lua/lua_sql.c
index 36b75ff..529ee59 100644
--- a/src/box/lua/lua_sql.c
+++ b/src/box/lua/lua_sql.c
@@ -77,13 +77,15 @@ lua_sql_call(sql_context *pCtx, int nVal, sql_value **apVal) {
 			lua_pushboolean(L, sql_value_boolean(param));
 			break;
 		default:
-			sql_result_error(pCtx, "Unsupported type passed "
-					     "to Lua", -1);
+			diag_set(ClientError, ER_SQL_EXECUTE, "Unsupported "\
+				 "type passed to Lua");
+			pCtx->is_aborted = true;
 			goto error;
 		}
 	}
 	if (lua_pcall(L, lua_gettop(L) - 1, 1, 0) != 0){
-		sql_result_error(pCtx, lua_tostring(L, -1), -1);
+		diag_set(ClientError, ER_SQL_EXECUTE, lua_tostring(L, -1));
+		pCtx->is_aborted = true;
 		goto error;
 	}
 	switch(lua_type(L, -1)) {
@@ -101,8 +103,9 @@ lua_sql_call(sql_context *pCtx, int nVal, sql_value **apVal) {
 		sql_result_null(pCtx);
 		break;
 	default:
-		sql_result_error(pCtx, "Unsupported type returned from Lua",
-				     -1);
+		diag_set(ClientError, ER_SQL_EXECUTE, "Unsupported type "\
+			 "passed from Lua");
+		pCtx->is_aborted = true;
 		goto error;
 	}
 error:
diff --git a/src/box/sql/analyze.c b/src/box/sql/analyze.c
index d2d29c5..9795429 100644
--- a/src/box/sql/analyze.c
+++ b/src/box/sql/analyze.c
@@ -298,7 +298,7 @@ statInit(sql_context * context, int argc, sql_value ** argv)
 	db = sql_context_db_handle(context);
 	p = sqlDbMallocZero(db, n);
 	if (p == 0) {
-		sql_result_error_nomem(context);
+		context->is_aborted = true;
 		return;
 	}
 
@@ -669,7 +669,7 @@ statGet(sql_context * context, int argc, sql_value ** argv)
 
 		char *zRet = sqlMallocZero((p->nKeyCol + 1) * 25);
 		if (zRet == 0) {
-			sql_result_error_nomem(context);
+			context->is_aborted = true;
 			return;
 		}
 
@@ -715,7 +715,7 @@ statGet(sql_context * context, int argc, sql_value ** argv)
 
 	char *zRet = sqlMallocZero(p->nCol * 25);
 	if (zRet == 0) {
-		sql_result_error_nomem(context);
+		context->is_aborted = true;
 	} else {
 		int i;
 		char *z = zRet;
diff --git a/src/box/sql/date.c b/src/box/sql/date.c
index 07a57ab..6d3a2b0 100644
--- a/src/box/sql/date.c
+++ b/src/box/sql/date.c
@@ -617,7 +617,8 @@ localtimeOffset(DateTime * p,	/* Date at which to calculate offset */
 	computeJD(&x);
 	t = (time_t) (x.iJD / 1000 - 21086676 * (i64) 10000);
 	if (osLocaltime(&t, &sLocal)) {
-		sql_result_error(pCtx, "local time unavailable", -1);
+		diag_set(ClientError, ER_SQL_EXECUTE, "local time unavailable");
+		pCtx->is_aborted = true;
 		*pRc = SQL_ERROR;
 		return 0;
 	}
@@ -1108,12 +1109,13 @@ strftimeFunc(sql_context * context, int argc, sql_value ** argv)
 	if (n < sizeof(zBuf)) {
 		z = zBuf;
 	} else if (n > (u64) db->aLimit[SQL_LIMIT_LENGTH]) {
-		sql_result_error_toobig(context);
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		context->is_aborted = true;
 		return;
 	} else {
 		z = sqlDbMallocRawNN(db, (int)n);
 		if (z == 0) {
-			sql_result_error_nomem(context);
+			context->is_aborted = true;
 			return;
 		}
 	}
diff --git a/src/box/sql/func.c b/src/box/sql/func.c
index bb7405e..593aa94 100644
--- a/src/box/sql/func.c
+++ b/src/box/sql/func.c
@@ -181,13 +181,9 @@ absFunc(sql_context * context, int argc, sql_value ** argv)
 			i64 iVal = sql_value_int64(argv[0]);
 			if (iVal < 0) {
 				if (iVal == SMALLEST_INT64) {
-					/* IMP: R-31676-45509 If X is the integer -9223372036854775808
-					 * then abs(X) throws an integer overflow error since there is no
-					 * equivalent positive 64-bit two complement value.
-					 */
-					sql_result_error(context,
-							     "integer overflow",
-							     -1);
+					diag_set(ClientError, ER_SQL_EXECUTE,
+						 "integer is overflowed");
+					context->is_aborted = true;
 					return;
 				}
 				iVal = -iVal;
@@ -203,8 +199,7 @@ absFunc(sql_context * context, int argc, sql_value ** argv)
 	case MP_BOOL: {
 		diag_set(ClientError, ER_INCONSISTENT_TYPES, "number",
 			 "boolean");
-		context->isError = SQL_TARANTOOL_ERROR;
-		context->fErrorOrAux = 1;
+		context->is_aborted = true;
 		return;
 	}
 	default:{
@@ -256,8 +251,7 @@ position_func(struct sql_context *context, int argc, struct Mem **argv)
 	if (inconsistent_type_arg != NULL) {
 		diag_set(ClientError, ER_INCONSISTENT_TYPES, "TEXT or BLOB",
 			 mem_type_to_str(inconsistent_type_arg));
-		context->isError = SQL_TARANTOOL_ERROR;
-		context->fErrorOrAux = 1;
+		context->is_aborted = true;
 		return;
 	}
 	/*
@@ -267,8 +261,7 @@ position_func(struct sql_context *context, int argc, struct Mem **argv)
 	if (haystack_type != needle_type) {
 		diag_set(ClientError, ER_INCONSISTENT_TYPES,
 			 mem_type_to_str(needle), mem_type_to_str(haystack));
-		context->isError = SQL_TARANTOOL_ERROR;
-		context->fErrorOrAux = 1;
+		context->is_aborted = true;
 		return;
 	}
 
@@ -513,7 +506,6 @@ roundFunc(sql_context * context, int argc, sql_value ** argv)
 {
 	int n = 0;
 	double r;
-	char *zBuf;
 	assert(argc == 1 || argc == 2);
 	if (argc == 2) {
 		if (sql_value_is_null(argv[1]))
@@ -534,23 +526,17 @@ roundFunc(sql_context * context, int argc, sql_value ** argv)
 	} else if (n == 0 && r < 0 && (-r) < LARGEST_INT64 - 1) {
 		r = -(double)((sql_int64) ((-r) + 0.5));
 	} else {
-		zBuf = sql_mprintf("%.*f", n, r);
-		if (zBuf == 0) {
-			sql_result_error_nomem(context);
-			return;
-		}
-		sqlAtoF(zBuf, &r, sqlStrlen30(zBuf));
-		sql_free(zBuf);
+		const char *rounded_value = tt_sprintf("%.*f", n, r);
+		sqlAtoF(rounded_value, &r, sqlStrlen30(rounded_value));
 	}
 	sql_result_double(context, r);
 }
 
 /*
  * Allocate nByte bytes of space using sqlMalloc(). If the
- * allocation fails, call sql_result_error_nomem() to notify
- * the database handle that malloc() has failed and return NULL.
- * If nByte is larger than the maximum string or blob length, then
- * raise an SQL_TOOBIG exception and return NULL.
+ * allocation fails, return NULL. If nByte is larger than the
+ * maximum string or blob length, then raise an error and return
+ * NULL.
  */
 static void *
 contextMalloc(sql_context * context, i64 nByte)
@@ -561,13 +547,13 @@ contextMalloc(sql_context * context, i64 nByte)
 	testcase(nByte == db->aLimit[SQL_LIMIT_LENGTH]);
 	testcase(nByte == db->aLimit[SQL_LIMIT_LENGTH] + 1);
 	if (nByte > db->aLimit[SQL_LIMIT_LENGTH]) {
-		sql_result_error_toobig(context);
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		context->is_aborted = true;
 		z = 0;
 	} else {
 		z = sqlMalloc(nByte);
-		if (!z) {
-			sql_result_error_nomem(context);
-		}
+		if (z == NULL)
+			context->is_aborted = true;
 	}
 	return z;
 }
@@ -594,8 +580,8 @@ case_type##ICUFunc(sql_context *context, int argc, sql_value **argv)   \
 	if (!z2)                                                               \
 		return;                                                        \
 	z1 = contextMalloc(context, ((i64) n) + 1);                            \
-	if (!z1) {                                                             \
-		sql_result_error_nomem(context);                           \
+	if (z1 == NULL) {                                                      \
+		context->is_aborted = true;                                    \
 		return;                                                        \
 	}                                                                      \
 	UErrorCode status = U_ZERO_ERROR;                                      \
@@ -612,8 +598,8 @@ case_type##ICUFunc(sql_context *context, int argc, sql_value **argv)   \
 		status = U_ZERO_ERROR;                                         \
 		sql_free(z1);                                              \
 		z1 = contextMalloc(context, ((i64) len) + 1);                  \
-		if (!z1) {                                                     \
-			sql_result_error_nomem(context);                   \
+		if (z1 == NULL) {                                              \
+			context->is_aborted = true;                            \
 			return;                                                \
 		}                                                              \
 		ucasemap_utf8To##case_type(case_map, z1, len, z2, n, &status); \
@@ -919,8 +905,7 @@ likeFunc(sql_context *context, int argc, sql_value **argv)
 					  mem_type_to_str(argv[1]);
 		diag_set(ClientError, ER_INCONSISTENT_TYPES, "TEXT",
 			 inconsistent_type);
-		context->fErrorOrAux = 1;
-		context->isError = SQL_TARANTOOL_ERROR;
+		context->is_aborted = true;
 		return;
 	}
 	const char *zB = (const char *) sql_value_text(argv[0]);
@@ -937,8 +922,9 @@ likeFunc(sql_context *context, int argc, sql_value **argv)
 	testcase(nPat == db->aLimit[SQL_LIMIT_LIKE_PATTERN_LENGTH]);
 	testcase(nPat == db->aLimit[SQL_LIMIT_LIKE_PATTERN_LENGTH] + 1);
 	if (nPat > db->aLimit[SQL_LIMIT_LIKE_PATTERN_LENGTH]) {
-		sql_result_error(context,
-				     "LIKE pattern is too complex", -1);
+		diag_set(ClientError, ER_SQL_EXECUTE, "LIKE pattern is too "\
+			 "complex");
+		context->is_aborted = true;
 		return;
 	}
 	/* Encoding did not change */
@@ -953,10 +939,10 @@ likeFunc(sql_context *context, int argc, sql_value **argv)
 		const unsigned char *zEsc = sql_value_text(argv[2]);
 		if (zEsc == 0)
 			return;
-		const char *const err_msg =
-			"ESCAPE expression must be a single character";
 		if (sql_utf8_char_count(zEsc, sql_value_bytes(argv[2])) != 1) {
-			sql_result_error(context, err_msg, -1);
+			diag_set(ClientError, ER_SQL_EXECUTE, "ESCAPE "\
+				 "expression must be a single character");
+			context->is_aborted = true;
 			return;
 		}
 		escape = sqlUtf8Read(&zEsc);
@@ -967,9 +953,9 @@ likeFunc(sql_context *context, int argc, sql_value **argv)
 	res = sql_utf8_pattern_compare(zB, zA, zB_end, zA_end,
 				       is_like_ci, escape);
 	if (res == INVALID_PATTERN) {
-		const char *const err_msg =
-			"LIKE pattern can only contain UTF-8 characters";
-		sql_result_error(context, err_msg, -1);
+		diag_set(ClientError, ER_SQL_EXECUTE, "LIKE pattern can only "\
+			 "contain UTF-8 characters");
+		context->is_aborted = true;
 		return;
 	}
 	sql_result_bool(context, res == MATCH);
@@ -1136,8 +1122,8 @@ charFunc(sql_context * context, int argc, sql_value ** argv)
 	unsigned char *z, *zOut;
 	int i;
 	zOut = z = sql_malloc64(argc * 4 + 1);
-	if (z == 0) {
-		sql_result_error_nomem(context);
+	if (z == NULL) {
+		context->is_aborted = true;
 		return;
 	}
 	for (i = 0; i < argc; i++) {
@@ -1200,15 +1186,14 @@ static void
 zeroblobFunc(sql_context * context, int argc, sql_value ** argv)
 {
 	i64 n;
-	int rc;
 	assert(argc == 1);
 	UNUSED_PARAMETER(argc);
 	n = sql_value_int64(argv[0]);
 	if (n < 0)
 		n = 0;
-	rc = sql_result_zeroblob64(context, n);	/* IMP: R-00293-64994 */
-	if (rc) {
-		sql_result_error_code(context, rc);
+	if (sql_result_zeroblob64(context, n) != SQL_OK) {
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		context->is_aborted = true;
 	}
 }
 
@@ -1275,14 +1260,16 @@ replaceFunc(sql_context * context, int argc, sql_value ** argv)
 			testcase(nOut - 1 == db->aLimit[SQL_LIMIT_LENGTH]);
 			testcase(nOut - 2 == db->aLimit[SQL_LIMIT_LENGTH]);
 			if (nOut - 1 > db->aLimit[SQL_LIMIT_LENGTH]) {
-				sql_result_error_toobig(context);
+				diag_set(ClientError, ER_SQL_EXECUTE, "string "\
+					 "or blob too big");
+				context->is_aborted = true;
 				sql_free(zOut);
 				return;
 			}
 			zOld = zOut;
 			zOut = sql_realloc64(zOut, (int)nOut);
 			if (zOut == 0) {
-				sql_result_error_nomem(context);
+				context->is_aborted = true;
 				sql_free(zOld);
 				return;
 			}
@@ -1605,8 +1592,7 @@ sum_step(struct sql_context *context, int argc, sql_value **argv)
 		if (mem_apply_numeric_type(argv[0]) != 0) {
 			diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
 				 sql_value_text(argv[0]), "number");
-			context->fErrorOrAux = 1;
-			context->isError = SQL_TARANTOOL_ERROR;
+			context->is_aborted = true;
 			return;
 		}
 		type = sql_value_type(argv[0]);
@@ -1632,7 +1618,9 @@ sumFinalize(sql_context * context)
 	p = sql_aggregate_context(context, 0);
 	if (p && p->cnt > 0) {
 		if (p->overflow) {
-			sql_result_error(context, "integer overflow", -1);
+			diag_set(ClientError, ER_SQL_EXECUTE, "integer "\
+				 "overflow");
+			context->is_aborted = true;
 		} else if (p->approx) {
 			sql_result_double(context, p->rSum);
 		} else {
@@ -1789,9 +1777,11 @@ groupConcatFinalize(sql_context * context)
 	pAccum = sql_aggregate_context(context, 0);
 	if (pAccum) {
 		if (pAccum->accError == STRACCUM_TOOBIG) {
-			sql_result_error_toobig(context);
+			diag_set(ClientError, ER_SQL_EXECUTE, "string or blob "\
+				 "too big");
+			context->is_aborted = true;
 		} else if (pAccum->accError == STRACCUM_NOMEM) {
-			sql_result_error_nomem(context);
+			context->is_aborted = true;
 		} else {
 			sql_result_text(context,
 					    sqlStrAccumFinish(pAccum),
diff --git a/src/box/sql/sqlInt.h b/src/box/sql/sqlInt.h
index 3981fbf..9c0659b 100644
--- a/src/box/sql/sqlInt.h
+++ b/src/box/sql/sqlInt.h
@@ -476,19 +476,6 @@ void
 sql_result_double(sql_context *, double);
 
 void
-sql_result_error(sql_context *, const char *,
-		     int);
-
-void
-sql_result_error_toobig(sql_context *);
-
-void
-sql_result_error_nomem(sql_context *);
-
-void
-sql_result_error_code(sql_context *, int);
-
-void
 sql_result_int(sql_context *, int);
 
 void
diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index 1559f01..7d85959 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -1717,17 +1717,13 @@ case OP_Function: {
 	}
 #endif
 	MemSetTypeFlag(pCtx->pOut, MEM_Null);
-	pCtx->fErrorOrAux = 0;
+	pCtx->is_aborted = false;
 	(*pCtx->pFunc->xSFunc)(pCtx, pCtx->argc, pCtx->argv);/* IMP: R-24505-23230 */
 
 	/* If the function returned an error, throw an exception */
-	if (pCtx->fErrorOrAux) {
-		if (pCtx->isError) {
-			sqlVdbeError(p, "%s", sql_value_text(pCtx->pOut));
-			rc = pCtx->isError;
-		}
-		sqlVdbeDeleteAuxData(db, &p->pAuxData, pCtx->iOp, pOp->p1);
-		if (rc) goto abort_due_to_error;
+	if (pCtx->is_aborted) {
+		rc = SQL_TARANTOOL_ERROR;
+		goto abort_due_to_error;
 	}
 
 	/* Copy the result of the function into register P3 */
@@ -4894,9 +4890,6 @@ case OP_Program: {        /* jump */
 	pFrame->pParent = p->pFrame;
 	pFrame->nChange = p->nChange;
 	pFrame->nDbChange = p->db->nChange;
-	assert(pFrame->pAuxData==0);
-	pFrame->pAuxData = p->pAuxData;
-	p->pAuxData = 0;
 	p->nChange = 0;
 	p->pFrame = pFrame;
 	p->aMem = aMem = VdbeFrameMem(pFrame);
@@ -5159,16 +5152,13 @@ case OP_AggStep: {
 	pMem->n++;
 	sqlVdbeMemInit(&t, db, MEM_Null);
 	pCtx->pOut = &t;
-	pCtx->fErrorOrAux = 0;
+	pCtx->is_aborted = false;
 	pCtx->skipFlag = 0;
 	(pCtx->pFunc->xSFunc)(pCtx,pCtx->argc,pCtx->argv); /* IMP: R-24505-23230 */
-	if (pCtx->fErrorOrAux) {
-		if (pCtx->isError) {
-			sqlVdbeError(p, "%s", sql_value_text(&t));
-			rc = pCtx->isError;
-		}
+	if (pCtx->is_aborted) {
 		sqlVdbeMemRelease(&t);
-		if (rc) goto abort_due_to_error;
+		rc = SQL_TARANTOOL_ERROR;
+		goto abort_due_to_error;
 	} else {
 		assert(t.flags==MEM_Null);
 	}
diff --git a/src/box/sql/vdbeInt.h b/src/box/sql/vdbeInt.h
index a3100e5..ee14510 100644
--- a/src/box/sql/vdbeInt.h
+++ b/src/box/sql/vdbeInt.h
@@ -62,9 +62,6 @@ typedef unsigned Bool;
 /* Opaque type used by code in vdbesort.c */
 typedef struct VdbeSorter VdbeSorter;
 
-/* Elements of the linked list at Vdbe.pAuxData */
-typedef struct AuxData AuxData;
-
 /* Types of VDBE cursors */
 #define CURTYPE_TARANTOOL   0
 #define CURTYPE_SORTER      1
@@ -161,7 +158,6 @@ struct VdbeFrame {
 	Mem *aMem;		/* Array of memory cells for parent frame */
 	VdbeCursor **apCsr;	/* Array of Vdbe cursors for parent frame */
 	void *token;		/* Copy of SubProgram.token */
-	AuxData *pAuxData;	/* Linked list of auxdata allocations */
 	int nCursor;		/* Number of entries in apCsr */
 	int pc;			/* Program Counter in parent (calling) frame */
 	int nOp;		/* Size of aOp array */
@@ -304,21 +300,6 @@ mem_apply_numeric_type(struct Mem *record);
 #endif
 
 /*
- * Each auxiliary data pointer stored by a user defined function
- * implementation calling sql_set_auxdata() is stored in an instance
- * of this structure. All such structures associated with a single VM
- * are stored in a linked list headed at Vdbe.pAuxData. All are destroyed
- * when the VM is halted (if not before).
- */
-struct AuxData {
-	int iOp;		/* Instruction number of OP_Function opcode */
-	int iArg;		/* Index of function argument. */
-	void *pAux;		/* Aux data pointer */
-	void (*xDelete) (void *);	/* Destructor for the aux data */
-	AuxData *pNext;		/* Next element in list */
-};
-
-/*
  * The "context" argument for an installable function.  A pointer to an
  * instance of this structure is the first argument to the routines used
  * implement the SQL functions.
@@ -337,9 +318,12 @@ struct sql_context {
 	Mem *pMem;		/* Memory cell used to store aggregate context */
 	Vdbe *pVdbe;		/* The VM that owns this context */
 	int iOp;		/* Instruction number of OP_Function */
-	int isError;		/* Error code returned by the function. */
+	/*
+	 * True, if an error occurred during the execution of the
+	 * function.
+	 */
+	bool is_aborted;
 	u8 skipFlag;		/* Skip accumulator loading if true */
-	u8 fErrorOrAux;		/* isError!=0 or pVdbe->pAuxData modified */
 	u8 argc;		/* Number of arguments */
 	sql_value *argv[1];	/* Argument set */
 };
@@ -445,7 +429,6 @@ struct Vdbe {
 	int nFrame;		/* Number of frames in pFrame list */
 	u32 expmask;		/* Binding to these vars invalidates VM */
 	SubProgram *pProgram;	/* Linked list of all sub-programs used by VM */
-	AuxData *pAuxData;	/* Linked list of auxdata allocations */
 	/* Anonymous savepoint for aborts only */
 	Savepoint *anonymous_savepoint;
 #ifdef SQL_ENABLE_STMT_SCANSTATUS
@@ -478,7 +461,6 @@ u32 sqlVdbeSerialTypeLen(u32);
 u32 sqlVdbeSerialType(Mem *, int, u32 *);
 u32 sqlVdbeSerialPut(unsigned char *, Mem *, u32);
 u32 sqlVdbeSerialGet(const unsigned char *, u32, Mem *);
-void sqlVdbeDeleteAuxData(sql *, AuxData **, int, int);
 
 int sqlVdbeExec(Vdbe *);
 int sqlVdbeList(Vdbe *);
diff --git a/src/box/sql/vdbeapi.c b/src/box/sql/vdbeapi.c
index 597d37e..673ccd1 100644
--- a/src/box/sql/vdbeapi.c
+++ b/src/box/sql/vdbeapi.c
@@ -321,7 +321,8 @@ setResultStrOrError(sql_context * pCtx,	/* Function context */
     )
 {
 	if (sqlVdbeMemSetStr(pCtx->pOut, z, n,1, xDel) == SQL_TOOBIG) {
-		sql_result_error_toobig(pCtx);
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		pCtx->is_aborted = true;
 	}
 }
 
@@ -339,8 +340,10 @@ invokeValueDestructor(const void *p,	/* Value to destroy */
 	} else {
 		xDel((void *)p);
 	}
-	if (pCtx)
-		sql_result_error_toobig(pCtx);
+	if (pCtx) {
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		pCtx->is_aborted = true;
+	}
 	return SQL_TOOBIG;
 }
 
@@ -351,7 +354,8 @@ sql_result_blob(sql_context * pCtx,
 {
 	assert(n >= 0);
 	if (sqlVdbeMemSetStr(pCtx->pOut, z, n,0, xDel) == SQL_TOOBIG) {
-		sql_result_error_toobig(pCtx);
+		diag_set(ClientError, ER_SQL_EXECUTE, "string or blob too big");
+		pCtx->is_aborted = true;
 	}
 }
 
@@ -375,14 +379,6 @@ sql_result_double(sql_context * pCtx, double rVal)
 }
 
 void
-sql_result_error(sql_context * pCtx, const char *z, int n)
-{
-	pCtx->isError = SQL_ERROR;
-	pCtx->fErrorOrAux = 1;
-	sqlVdbeMemSetStr(pCtx->pOut, z, n, 1, SQL_TRANSIENT);
-}
-
-void
 sql_result_int(sql_context * pCtx, int iVal)
 {
 	sqlVdbeMemSetInt64(pCtx->pOut, (i64) iVal);
@@ -451,37 +447,6 @@ sql_result_zeroblob64(sql_context * pCtx, u64 n)
 	return SQL_OK;
 }
 
-void
-sql_result_error_code(sql_context * pCtx, int errCode)
-{
-	pCtx->isError = errCode;
-	pCtx->fErrorOrAux = 1;
-	if (pCtx->pOut->flags & MEM_Null) {
-		sqlVdbeMemSetStr(pCtx->pOut, sqlErrStr(errCode), -1, 1,
-				     SQL_STATIC);
-	}
-}
-
-/* Force an SQL_TOOBIG error. */
-void
-sql_result_error_toobig(sql_context * pCtx)
-{
-	pCtx->isError = SQL_TOOBIG;
-	pCtx->fErrorOrAux = 1;
-	sqlVdbeMemSetStr(pCtx->pOut, "string or blob too big", -1, 1,
-			     SQL_STATIC);
-}
-
-/* An SQL_NOMEM error. */
-void
-sql_result_error_nomem(sql_context * pCtx)
-{
-	sqlVdbeMemSetNull(pCtx->pOut);
-	pCtx->isError = SQL_NOMEM;
-	pCtx->fErrorOrAux = 1;
-	sqlOomFault(pCtx->pOut->db);
-}
-
 /*
  * Execute the statement pStmt, either until a row of data is ready, the
  * statement is completely executed or an error occurs.
@@ -712,13 +677,10 @@ sqlInvalidFunction(sql_context * context,	/* The function calling context */
     )
 {
 	const char *zName = context->pFunc->zName;
-	char *zErr;
 	UNUSED_PARAMETER2(NotUsed, NotUsed2);
-	zErr =
-	    sql_mprintf
-	    ("unable to use function %s in the requested context", zName);
-	sql_result_error(context, zErr, -1);
-	sql_free(zErr);
+	const char *err = "unable to use function %s in the requested context";
+	diag_set(ClientError, ER_SQL_EXECUTE, tt_sprintf(err, zName));
+	context->is_aborted = true;
 }
 
 /*
@@ -762,75 +724,6 @@ sql_aggregate_context(sql_context * p, int nByte)
 }
 
 /*
- * Return the auxiliary data pointer, if any, for the iArg'th argument to
- * the user-function defined by pCtx.
- */
-void *
-sql_get_auxdata(sql_context * pCtx, int iArg)
-{
-	AuxData *pAuxData;
-
-	if (pCtx->pVdbe == 0)
-		return 0;
-
-	for (pAuxData = pCtx->pVdbe->pAuxData; pAuxData;
-	     pAuxData = pAuxData->pNext) {
-		if (pAuxData->iOp == pCtx->iOp && pAuxData->iArg == iArg)
-			break;
-	}
-
-	return (pAuxData ? pAuxData->pAux : 0);
-}
-
-/*
- * Set the auxiliary data pointer and delete function, for the iArg'th
- * argument to the user-function defined by pCtx. Any previous value is
- * deleted by calling the delete function specified when it was set.
- */
-void
-sql_set_auxdata(sql_context * pCtx,
-		    int iArg, void *pAux, void (*xDelete) (void *)
-    )
-{
-	AuxData *pAuxData;
-	Vdbe *pVdbe = pCtx->pVdbe;
-
-	if (iArg < 0)
-		goto failed;
-	if (pVdbe == 0)
-		goto failed;
-
-	for (pAuxData = pVdbe->pAuxData; pAuxData; pAuxData = pAuxData->pNext) {
-		if (pAuxData->iOp == pCtx->iOp && pAuxData->iArg == iArg)
-			break;
-	}
-	if (pAuxData == 0) {
-		pAuxData = sqlDbMallocZero(pVdbe->db, sizeof(AuxData));
-		if (!pAuxData)
-			goto failed;
-		pAuxData->iOp = pCtx->iOp;
-		pAuxData->iArg = iArg;
-		pAuxData->pNext = pVdbe->pAuxData;
-		pVdbe->pAuxData = pAuxData;
-		if (pCtx->fErrorOrAux == 0) {
-			pCtx->isError = 0;
-			pCtx->fErrorOrAux = 1;
-		}
-	} else if (pAuxData->xDelete) {
-		pAuxData->xDelete(pAuxData->pAux);
-	}
-
-	pAuxData->pAux = pAux;
-	pAuxData->xDelete = xDelete;
-	return;
-
- failed:
-	if (xDelete) {
-		xDelete(pAux);
-	}
-}
-
-/*
  * Return the number of columns in the result set for the statement pStmt.
  */
 int
diff --git a/src/box/sql/vdbeaux.c b/src/box/sql/vdbeaux.c
index 27fa5b2..619b211 100644
--- a/src/box/sql/vdbeaux.c
+++ b/src/box/sql/vdbeaux.c
@@ -1401,7 +1401,6 @@ sqlVdbeFrameDelete(VdbeFrame * p)
 		sqlVdbeFreeCursor(p->v, apCsr[i]);
 	}
 	releaseMemArray(aMem, p->nChildMem);
-	sqlVdbeDeleteAuxData(p->v->db, &p->pAuxData, -1, 0);
 	sqlDbFree(p->v->db, p);
 }
 
@@ -1920,9 +1919,6 @@ sqlVdbeFrameRestore(VdbeFrame * pFrame)
 	v->nCursor = pFrame->nCursor;
 	v->nChange = pFrame->nChange;
 	v->db->nChange = pFrame->nDbChange;
-	sqlVdbeDeleteAuxData(v->db, &v->pAuxData, -1, 0);
-	v->pAuxData = pFrame->pAuxData;
-	pFrame->pAuxData = 0;
 	return pFrame->pc;
 }
 
@@ -1966,11 +1962,6 @@ closeCursorsAndFree(Vdbe * p)
 		p->pDelFrame = pDel->pParent;
 		sqlVdbeFrameDelete(pDel);
 	}
-
-	/* Delete any auxdata allocations made by the VM */
-	if (p->pAuxData)
-		sqlVdbeDeleteAuxData(p->db, &p->pAuxData, -1, 0);
-	assert(p->pAuxData == 0);
 }
 
 /*
@@ -2528,43 +2519,6 @@ sqlVdbeFinalize(Vdbe * p)
 }
 
 /*
- * If parameter iOp is less than zero, then invoke the destructor for
- * all auxiliary data pointers currently cached by the VM passed as
- * the first argument.
- *
- * Or, if iOp is greater than or equal to zero, then the destructor is
- * only invoked for those auxiliary data pointers created by the user
- * function invoked by the OP_Function opcode at instruction iOp of
- * VM pVdbe, and only then if:
- *
- *    * the associated function parameter is the 32nd or later (counting
- *      from left to right), or
- *
- *    * the corresponding bit in argument mask is clear (where the first
- *      function parameter corresponds to bit 0 etc.).
- */
-void
-sqlVdbeDeleteAuxData(sql * db, AuxData ** pp, int iOp, int mask)
-{
-	while (*pp) {
-		AuxData *pAux = *pp;
-		if ((iOp < 0)
-		    || (pAux->iOp == iOp
-			&& (pAux->iArg > 31 || !(mask & MASKBIT32(pAux->iArg))))
-		    ) {
-			testcase(pAux->iArg == 31);
-			if (pAux->xDelete) {
-				pAux->xDelete(pAux->pAux);
-			}
-			*pp = pAux->pNext;
-			sqlDbFree(db, pAux);
-		} else {
-			pp = &pAux->pNext;
-		}
-	}
-}
-
-/*
  * Free all memory associated with the Vdbe passed as the second argument,
  * except for object itself, which is preserved.
  *
diff --git a/src/box/sql/vdbemem.c b/src/box/sql/vdbemem.c
index f73ea0a..585dc21 100644
--- a/src/box/sql/vdbemem.c
+++ b/src/box/sql/vdbemem.c
@@ -321,7 +321,6 @@ sqlVdbeMemStringify(Mem * pMem, u8 bForce)
 int
 sqlVdbeMemFinalize(Mem * pMem, FuncDef * pFunc)
 {
-	int rc = SQL_OK;
 	if (ALWAYS(pFunc && pFunc->xFinalize)) {
 		sql_context ctx;
 		Mem t;
@@ -338,9 +337,9 @@ sqlVdbeMemFinalize(Mem * pMem, FuncDef * pFunc)
 		if (pMem->szMalloc > 0)
 			sqlDbFree(pMem->db, pMem->zMalloc);
 		memcpy(pMem, &t, sizeof(t));
-		rc = ctx.isError;
+		return ctx.is_aborted ? SQL_TARANTOOL_ERROR : SQL_OK;
 	}
-	return rc;
+	return SQL_OK;
 }
 
 /*
@@ -1281,7 +1280,7 @@ valueFromFunction(sql * db,	/* The database connection */
 	ctx.pOut = pVal;
 	ctx.pFunc = pFunc;
 	pFunc->xSFunc(&ctx, nVal, apVal);
-	assert(!ctx.isError);
+	assert(!ctx.is_aborted);
 	sql_value_apply_type(pVal, type);
 	assert(rc == SQL_OK);
 
@@ -1486,7 +1485,7 @@ recordFunc(sql_context * context, int argc, sql_value ** argv)
 	nRet = 1 + nSerial + nVal;
 	aRet = sqlDbMallocRawNN(db, nRet);
 	if (aRet == 0) {
-		sql_result_error_nomem(context);
+		context->is_aborted = true;
 	} else {
 		aRet[0] = nSerial + 1;
 		putVarint32(&aRet[1], iSerial);
diff --git a/test/sql-tap/func.test.lua b/test/sql-tap/func.test.lua
index 09b1cf9..f9044ad 100755
--- a/test/sql-tap/func.test.lua
+++ b/test/sql-tap/func.test.lua
@@ -1730,7 +1730,7 @@ test:do_catchsql_test(
         SELECT abs(-9223372036854775807-1);
     ]], {
         -- <func-18.32>
-        1, "Failed to execute SQL statement: integer overflow"
+        1, "Failed to execute SQL statement: integer is overflowed"
         -- </func-18.32>
     })