[LU-239] Lustre Header (include/lprocfs_status.h) is not ISO C99 complaint

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.1.0
• Affects Version/s: Lustre 2.0.0
• Environment: ISO C99
• Severity: 3
• Bugzilla ID: 23,787

Epic

C99 ISO

• Assignee: Lai Siyao
• Reporter: Lai Siyao

Description

Lustre Header (include/lprocfs_status.h) is not ISO C99 complaint. In particular, there is a small section in lustre/include/lprocfs_status.h that fails to compile with PGI. This involves the use of a GCC extension in lprocfs_status.h for flexible arrays:

161 struct lprocfs_percpu

{ 162 struct lprocfs_counter lp_cntr[0]; 163 }

;

In this particular case, the nature of the extension is that the flexible array is the sole member
of the structure. So, one way to fix this is to make the structure ISO C99 compliant:

161 struct lprocfs_percpu

{ 162 int lp_pad; 163 struct lprocfs_counter lp_cntr[0]; 164 }

;