6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-24 08:29:39 +00:00
Code Issues Projects Releases Wiki Activity

Add a comment about ATTRIBUTE_UNUSED to avoid further confusion over when to

Browse Source 
use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116920 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2010-10-20 08:44:27 +00:00
parent 1cd9708f5c
commit 7283da51b8
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/llvm/Support/Compiler.h
View File

@ -31,6 +31,14 @@
#define ATTRIBUTE_USED
#endif
// Some compilers warn about unused functions. When a function is sometimes
// used or not depending on build settings (e.g. a function only called from
// within "assert"), this attribute can be used to suppress such warnings.
//
// However, it shouldn't be used for unused *variables*, as those have a much
// more portable solution:
// (void)unused_var_name;
// Prefer cast-to-void wherever it is sufficient.
#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
#define ATTRIBUTE_UNUSED __attribute__((__unused__))
#else