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| author | Jeff Muizelaar <jmuizelaar@mozilla.com> | 2009-01-28 17:16:32 -0500 |
|---|---|---|
| committer | Jeff Muizelaar <jmuizelaar@mozilla.com> | 2009-01-28 17:16:32 -0500 |
| commit | f4ff6128d7fb6e4b5ba361a597fc6c0c88d5ec00 (patch) | |
| tree | ed0c12668b7deb65c1e067d2a0b194d8e5fae179 /src/cairo-mutex-impl-private.h | |
| parent | 41feeedcc14bf8caef3c039de49f4f28143712c7 (diff) | |
| download | cairo-f4ff6128d7fb6e4b5ba361a597fc6c0c88d5ec00.tar.gz | |
Avoid "empty body in an if-statement" warning
Use '(void)expr;' instead of 'if (expr) ;' to avoid getting the warning.
'if (expr) {}' is an option, however '(void)expr;' seems like a more common
idiom and getting warnings for __attribute__((warn_unsed_result)) functions is
probably prefered.
Diffstat (limited to 'src/cairo-mutex-impl-private.h')
| -rw-r--r-- | src/cairo-mutex-impl-private.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/cairo-mutex-impl-private.h b/src/cairo-mutex-impl-private.h index 239dbbb09..ad65c1117 100644 --- a/src/cairo-mutex-impl-private.h +++ b/src/cairo-mutex-impl-private.h @@ -54,8 +54,9 @@ /* A fully qualified no-operation statement */ #define CAIRO_MUTEX_IMPL_NOOP do {/*no-op*/} while (0) /* And one that evaluates it's argument once */ -#define CAIRO_MUTEX_IMPL_NOOP1(expr) do { if (expr) ; } while (0) - +#define CAIRO_MUTEX_IMPL_NOOP1(expr) do { (void)(expr); } while (0) +/* NOTE: 'if (expr) {}' is an alternative to '(void)(expr);' that will 'use' the + * result of __attribute__((warn_used_result)) functions. */ /* Cairo mutex implementation: * |