Mercurial > hg > index.cgi
diff lwasm/macro.c @ 524:a4a58c4c7a41
Fix parsing {} macro argument expansion sequences
{nn} sequences were consuming one too many characters which caused
unpredictable and definitely incorrect behaviour if the {nn} sequence
terminated the line. It also caused the next character after the } to be
ignored if used in the middle of an argument sequence.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Tue, 25 Jan 2022 21:25:12 -0700 |
| parents | 5524649f4784 |
| children | 4536f0e61425 |
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--- a/lwasm/macro.c Mon Jan 24 13:55:40 2022 -0700 +++ b/lwasm/macro.c Tue Jan 25 21:25:12 2022 -0700 @@ -277,8 +277,10 @@ n = n * 10 + n2; p2++; } - if (*p2 == '}') - p2++; + // compensate for the autoinc on p2 if no } is present + // to prevent overconsuming input characters + if (*p2 != '}') + p2--; if (n == 0) {