Add strict prototypes for functions with no arguments.#295
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evanmiller merged 1 commit intoWizardMac:devfrom Feb 19, 2023
Merged
Add strict prototypes for functions with no arguments.#295evanmiller merged 1 commit intoWizardMac:devfrom
evanmiller merged 1 commit intoWizardMac:devfrom
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Using compile flags `-Werror -Wstrict-prototypes` (with Clang at least), the "prototypes" of some functions are flagged as an error. This is because of the difference between: ``` int no_args_please(void); ``` and ``` int no_args_please(); ``` Where the former is a strict prototype that says "no arguments are allowed". With the compile flags mentioned, ReadStat fails to compile with error messages like this: ``` In file included from src/readstat_bits.c:9: src/readstat_bits.h:10:29: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes] int machine_is_little_endian(); ``` This PR adds the missing `void` in a handful of places where Clang complains about it with those strict compile flags.
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As packager for ReadStat on FreeBSD, I have added these patches to the packaging-bits to make it compile on FreeBSD 14-CURRENT (which defaults to Clang + strict flags). I have not tested with other compilers, but the semantic difference between the two "prototypes" has been relevant since before C11 and apparently C11 makes the |
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Thanks! |
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Using compile flags
-Werror -Wstrict-prototypes(with Clang at least), the "prototypes" of some functions are flagged as an error. This is because of the difference between:and
Where the former is a strict prototype that says "no arguments are allowed". With the compile flags mentioned, ReadStat fails to compile with error messages like this:
This PR adds the missing
voidin a handful of places where Clang complains about it with those strict compile flags.