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regcomp: use unsigned char when testing for escapes

Description

regcomp: use unsigned char when testing for escapes

  • cast GETNEXT to unsigned where it is being promoted to int to prevent sign-extension (really it would have been better for PEEK*() and GETNEXT() to return unsigned char; this would have removed a ton of (uch) casts, but it is too intrusive for now).
  • fix an isalpha that should have been iswalpha

PR: 264275, 274032
Reviewed by: kevans, eugen (previous version)
Obtained from: NetBSD

(cherry picked from commit 3fb80f1476c7776f04ba7ef6d08397cef6abcfb0)

Details

Provenance
christos_netbsd.orgAuthored on Aug 30 2023, 8:37 PM
kevansCommitted on Sep 30 2023, 1:40 AM
Parents
rG803f088147d3: kernel: remove unused HWPMC_MIPS_BACKTRACE option
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