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tidy-up: use more static, sizeof(), char[], double-const

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- make `const` data `static`, where missing and possible.
- replace `strlen()` on literal or const strings with `sizeof()`.
  While the latter is optimized by popular C compiler, e.g. MSVC only
  does it with `/O2`.
- replace magic numbers with `sizeof()`, where missing.
- introduce `CURL_CSTRLEN()` macro for `sizeof(char[]) - 1`.
- use `CURL_CSTRLEN()` macro.
- move `const` before integer types, where missing.
- replace `char *var` with `var[]`, where missing and possible.
- use double const, where missing.
  `static const char *` -> `static const char * const`.
- lib1514: constify pointers.
- unit3205: drop redundant cast, avoid another one.
- unit1666: map `OID()` macro to identical `STRCONST()`.

Closes #22406
This commit is contained in:
Viktor Szakats 2026-07-23 01:50:06 +02:00
parent 573a6ec16b
commit e1450d8fda
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117 changed files with 311 additions and 287 deletions
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lib/progress.c
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@ -91,7 +91,7 @@ UNITTEST char *max6out(curl_off_t bytes, char *max6, size_t mlen)
if(bytes < 100000)
curl_msnprintf(max6, mlen, "%6" CURL_FORMAT_CURL_OFF_T, bytes);
else {
const char unit[] = { 'k', 'M', 'G', 'T', 'P', 'E', 0 };
static const char unit[] = { 'k', 'M', 'G', 'T', 'P', 'E', 0 };
int k = 0;
curl_off_t nbytes;
curl_off_t rest;