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fixes #5216

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This commit is contained in:
Araq
2017-01-27 09:49:45 +01:00
parent 376f6efa80
commit 68617adb91
2 changed files with 25 additions and 5 deletions
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10
compiler/semfold.nim
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@@ -216,24 +216,24 @@ proc getIntervalType*(m: TMagic, n: PNode): PType =
if b.kind in ordIntLit:
let x = b.intVal|+|1
if (x and -x) == x and x >= 0:
result = makeRange(a.typ, 0, b.intVal)
result = makeRange(n.typ, 0, b.intVal)
of mModU:
let a = n.sons[1]
let b = n.sons[2]
if b.kind in ordIntLit:
if b.intVal >= 0:
result = makeRange(a.typ, 0, b.intVal-1)
result = makeRange(n.typ, 0, b.intVal-1)
else:
result = makeRange(a.typ, b.intVal+1, 0)
result = makeRange(n.typ, b.intVal+1, 0)
of mModI:
# so ... if you ever wondered about modulo's signedness; this defines it:
let a = n.sons[1]
let b = n.sons[2]
if b.kind in {nkIntLit..nkUInt64Lit}:
if b.intVal >= 0:
result = makeRange(a.typ, -(b.intVal-1), b.intVal-1)
result = makeRange(n.typ, -(b.intVal-1), b.intVal-1)
else:
result = makeRange(a.typ, b.intVal+1, -(b.intVal+1))
result = makeRange(n.typ, b.intVal+1, -(b.intVal+1))
of mDivI, mDivU:
binaryOp(`|div|`)
of mMinI:

20
tests/arithm/tand.nim Normal file
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@@ -0,0 +1,20 @@
discard """
output: '''int32
int32
1280
1280'''
"""
# bug #5216
import typetraits
echo(name type((0x0A'i8 and 0x7F'i32) shl 7'i32))
let i8 = 0x0A'i8
echo(name type((i8 and 0x7F'i32) shl 7'i32))
echo((0x0A'i8 and 0x7F'i32) shl 7'i32)
let ii8 = 0x0A'i8
echo((ii8 and 0x7F'i32) shl 7'i32)