| commit | a1a844697daabe0e8c493c6abada8049431b7fd2 | |
| author | H. Peter Anvin (Intel) <hpa@zytor.com> | |
| Tue, 20 Aug 2019 08:32:28 +0000 (20 01:32 -0700) | ||
| committer | H. Peter Anvin (Intel) <hpa@zytor.com> | |
| Tue, 20 Aug 2019 08:32:28 +0000 (20 01:32 -0700) | ||
| tree | cea9617f7dfbf63ec5cfdfe4e0d272be5d18a736 | treesnapshot (tar.gz zip) |
| parent | 62cf4aaef6a6216fd0921f1ced4671dee6053d9f | commitdiff |
preproc: fix varadic macros, add conditional comma operator
Fix the (severely broken handling of) varadic macros.
Add a conditional comma operator "%,". This expands to a comma unless
followed by a null expansion of some sort, which allows suppressing
the comma before an empty argument (usually varadic, but not
necessarily.)
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Fix the (severely broken handling of) varadic macros.
Add a conditional comma operator "%,". This expands to a comma unless
followed by a null expansion of some sort, which allows suppressing
the comma before an empty argument (usually varadic, but not
necessarily.)
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
| asm/preproc.c | diffblobblamehistory | |
| test/gsmacro.asm | [new file with mode: 0644] | blob |