8737 vi: variable set but not used

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Submitter:	Toomas Soome
Repository:	illumos-gate
Branch:
Bugs:	8737
Depends On:
Commit:	2392b3b...
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Description

ex_vmain.c: In function 'vmain':
ex_vmain.c:620:19: error: variable 'tmp1' set but not used [-Werror=unused-but-set-variable]
     unsigned char tmp1;
                   ^~~~
ex_vmain.c:617:19: error: variable 'n' set but not used [-Werror=unused-but-set-variable]
     int tmp, len, n;
                   ^
cc1: all warnings being treated as errors

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Description	From	Last Updated
For `n' I searched but truly did not find any usage past its assignment. Mightn't it be removed along with ...	C Fraire	Oct. 28, 2017, 10:07 a.m.

usr/src/cmd/vi/port/ex_vmain.c (Diff revision 1)

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For `n' I searched but truly did not find any usage past its assignment. Mightn't it be removed along with line 636?

Toomas Soome Oct. 28, 2017, 10:07 a.m.
```
yep. thanks!
```

Yes, you should just remove the declaration of the variable n' along with the line that sets it.n' is truely unused. As well, the variable tmp1' is used only in the PRESUNEUC conditional case, although it's set just before the conditional. If you move the linetmp1 = mbuf[tmp_1]' down one line, so that it's just before where it is used, you can also move the declaration into the correct case. With those changes, you won't need to mark any variables as possibly unused.