Summary

abs() argument truncated on 64-bit

Metadata

• Id: 116bb980adddb6c331512b81fdf4f0061bc39937
• Trac id: 62
• Type: defect
• Reporter: zbigniew
• Owner:
• Cc:
• Status: closed
• Component: core libraries
• Estimated difficulty:
• Resolution: fixed
• Priority: major
• Milestone:
• Version:
• Changetime: 2009-07-31 22:03:12 UTC
• Created: 2009-07-31 20:24:49 UTC
• Keywords:

Attachments

• 116bb980adddb6c331512b81fdf4f0061bc39937/attachments/abs-64bit.diff.txt

Description

Reported by Alejandro: > In Chicken 3.4.0 linux-unix-gnu-x86-64 the expression (abs 2147483648) > evaluates to -2147483648 in both csi and a compiled program (negative? > and positive?, however, seem to work correctly). It evaluated > correctly in a 32-bits build of the same version.

Using labs() instead of abs() should fix the issue

Changes and comments

[2009-07-31 20:25:04 UTC] zbigniew attached abs-64bit.diff.txt (description=#f)

[2009-07-31 20:27:46 UTC] zbigniew removed version 4.0.x

[2009-07-31 20:27:46 UTC] zbigniew wrote:

Clarification, removed ticket version number, it applies to all versions.

[2009-07-31 22:03:12 UTC] felix changed status from new to closed

[2009-07-31 22:03:12 UTC] felix set resolution to fixed

[2009-07-31 22:03:12 UTC] felix wrote:

Patch attached in r15291. Thanks.