Summary

silence clang array bounds warnings

Metadata

• Id: ac758b384fd4455a7dfa620e8159a3edfa9eb380
• Trac id: 778
• Type: defect
• Reporter: zbigniew
• Owner:
• Cc:
• Status: closed
• Component: compiler
• Estimated difficulty:
• Resolution: fixed
• Priority: minor
• Milestone: 4.9.0
• Version: 4.7.x
• Changetime: 2012-09-24 21:47:48 UTC
• Created: 2012-01-16 07:22:29 UTC
• Keywords: clang c99

Attachments

• ac758b384fd4455a7dfa620e8159a3edfa9eb380/attachments/0001-Use-flexible-array-member-in-C99-mode-silences-clang.patch

Description

There is a data[[|1 ]] declaration in C_block_struct, which is needed for a variable length structure in C89. However, in clang this produces a ton of warnings unless you silence them with -Wno-array-bounds.

Solution: if C99 mode is detected--the default in clang--use a flexible array member instead. This is the portable way to do it for C99 compilers, and as a benefit, shuts clang up.

If you don't have to clang to test, you can use gcc with --std=c99 or --std=gnu99 to activate the code path.

Changes and comments

[2012-01-16 07:23:48 UTC] zbigniew attached 0001-Use-flexible-array-member-in-C99-mode-silences-clang.patch (description=#f)

[2012-01-27 18:03:25 UTC] zbigniew changed status from new to closed

[2012-01-27 18:03:25 UTC] zbigniew set resolution to fixed

[2012-09-24 21:47:48 UTC] felix changed milestone from 4.8.0 to 4.9.0

[2012-09-24 21:47:48 UTC] felix wrote:

Milestone 4.8.0 deleted