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Restrict ptr/ref to ptr/ref implicit conversion (#10411)

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* Restrict ptr/ref to ptr/ref implicit conversion

Fixes #10409

* Make the ptr conversions explicit in db_odbc
This commit is contained in:
LemonBoy
2019-01-22 11:17:20 +01:00
committed by Andreas Rumpf
parent 39e1cd2bf6
commit 6825430831
3 changed files with 18 additions and 6 deletions
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2
compiler/sigmatch.nim
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@@ -1316,7 +1316,7 @@ proc typeRelImpl(c: var TCandidate, f, aOrig: PType,
if typeRel(c, f.sons[i], a.sons[i]) == isNone: return isNone
result = typeRel(c, f.lastSon, a.lastSon, flags + {trNoCovariance})
subtypeCheck()
if result <= isConvertible: result = isNone
if result <= isIntConv: result = isNone
elif tfNotNil in f.flags and tfNotNil notin a.flags:
result = isNilConversion
elif a.kind == tyNil: result = f.allowsNil

14
lib/impure/db_odbc.nim
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@@ -128,7 +128,7 @@ proc getErrInfo(db: var DbConn): tuple[res: int, ss, ne, msg: string] {.
cast[PSQLCHAR](sqlState.addr),
cast[PSQLCHAR](nativeErr.addr),
cast[PSQLCHAR](errMsg.addr),
511.TSqlSmallInt, retSz.addr.PSQLSMALLINT)
511.TSqlSmallInt, retSz.addr.PSQLINTEGER)
except:
discard
return (res.int, $(addr sqlState), $(addr nativeErr), $(addr errMsg))
@@ -297,7 +297,8 @@ iterator fastRows*(db: var DbConn, query: SqlQuery,
for colId in 1..cCnt:
buf[0] = '\0'
db.sqlCheck(SQLGetData(db.stmt, colId.SqlUSmallInt, SQL_C_CHAR,
cast[cstring](buf.addr), 4095.TSqlSmallInt, sz.addr))
cast[cstring](buf.addr), 4095.TSqlSmallInt,
sz.addr.PSQLINTEGER))
rowRes[colId-1] = $(addr buf)
cCnt = tempcCnt
yield rowRes
@@ -332,7 +333,8 @@ iterator instantRows*(db: var DbConn, query: SqlQuery,
for colId in 1..cCnt:
buf[0] = '\0'
db.sqlCheck(SQLGetData(db.stmt, colId.SqlUSmallInt, SQL_C_CHAR,
cast[cstring](buf.addr), 4095.TSqlSmallInt, sz.addr))
cast[cstring](buf.addr), 4095.TSqlSmallInt,
sz.addr.PSQLINTEGER))
rowRes[colId-1] = $(addr buf)
cCnt = tempcCnt
yield (row: rowRes, len: cCnt.int)
@@ -374,7 +376,8 @@ proc getRow*(db: var DbConn, query: SqlQuery,
for colId in 1..cCnt:
buf[0] = '\0'
db.sqlCheck(SQLGetData(db.stmt, colId.SqlUSmallInt, SQL_C_CHAR,
cast[cstring](buf.addr), 4095.TSqlSmallInt, sz.addr))
cast[cstring](buf.addr), 4095.TSqlSmallInt,
sz.addr.PSQLINTEGER))
rowRes[colId-1] = $(addr buf)
cCnt = tempcCnt
res = SQLFetch(db.stmt)
@@ -409,7 +412,8 @@ proc getAllRows*(db: var DbConn, query: SqlQuery,
for colId in 1..cCnt:
buf[0] = '\0'
db.sqlCheck(SQLGetData(db.stmt, colId.SqlUSmallInt, SQL_C_CHAR,
cast[cstring](buf.addr), 4095.TSqlSmallInt, sz.addr))
cast[cstring](buf.addr), 4095.TSqlSmallInt,
sz.addr.PSQLINTEGER))
rowRes[colId-1] = $(addr buf)
cCnt = tempcCnt
rows.add(rowRes)

8
tests/typerel/tptrs.nim Normal file
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@@ -0,0 +1,8 @@
discard """
errormsg: "type mismatch: got <ptr int16> but expected 'ptr int'"
line: 8
"""
var
n: int16
p: ptr int = addr n