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61093e2a81
When the compiler supports C99.
- map logging functions to macro stubs when verbose logging is disabled
and the compiler is C99. Make sure these stubs silence unused variable
warnings for non-variadic arguments.
Before this patch they mapped to function stubs, the same codepath
used for C89 compiler in this configuration.
- introduce new macros to tell the compiler which code to include
when verbose code is active, or inactive:
- `CURLVERBOSE`: defined when verbose code is active.
To enclose blocks of code only used for verbose logging.
- `VERBOSE(statement);`:
compile statement when verbose code is active.
To mark code lines only used for verbose logging.
- `NOVERBOSE(statement);`:
compile statement when verbose code is inactive.
To suppress warnings for arguments passed to logging functions via
printf masks, e.g. `NOVERBOSE((void)ipaddress);`, yet keeping
the warning in verbose builds.
Note these macros are not the same as `CURL_DISABLE_VERBOSE_STRINGS`.
Verbose code is always active in C89 mode (without variadic macro
support).
- drop existing uses of `CURL_DISABLE_VERBOSE_STRINGS` where redundant,
or replace with the above macros. Ending up reducing the number of
`#ifdef`s, and also the number of lines.
Assisted-by: Daniel Stenberg
Assisted-by: Jay Satiro
Reported-by: Dan Fandrich
Fixes #20341
Refs: #12105 #12167
Closes #20353
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