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Use RUBY_DEBUG instead of NDEBUG

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Assertions in header files slows down an interpreter, so they should be
turned off by default (simple `make`). To enable them, define a macro
`RUBY_DEBUG=1` (e.g. `make cppflags=-DRUBY_DEBUG` or use `#define` at
the very beggining of the file. Note that even if `NDEBUG=1` is defined,
`RUBY_DEBUG=1` enables all assertions.
[Feature #16837]
related: https://github.com/ruby/ruby/pull/3120

`assert()` lines in MRI *.c is not disabled even if `RUBY_DEBUG=0` and
it can be disabled with `NDEBUG=1`. So please consider to use
`RUBY_ASSERT()` if you want to disable them when `RUBY_DEBUG=0`.
This commit is contained in:
Koichi Sasada 2020-05-20 11:38:44 +09:00
parent b10b37924a
commit 21991e6ca5
Notes: git 2020-05-26 03:21:52 +09:00
19 changed files with 82 additions and 82 deletions
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11
include/ruby/assert.h
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@ -31,6 +31,10 @@
# define RUBY_DEBUG 0
#endif
#if RUBY_DEBUG > 0 && defined(NDEBUG)
#warning NDEBUG is ignored because RUBY_DEBUG>0.
#endif
/*
* Pro tip: `!!NDEBUG-1` expands to...
*
@ -82,11 +86,12 @@ RBIMPL_SYMBOL_EXPORT_END()
RUBY_ASSERT_MESG(!(cond) || (expr), mesg))
#endif /* RUBY_DEBUG */
#define RUBY_ASSERT(expr) RUBY_ASSERT_MESG_WHEN((!RUBY_NDEBUG+0), expr, #expr)
#define RUBY_ASSERT(expr) RUBY_ASSERT_MESG_WHEN(FALSE, expr, #expr)
#define RUBY_ASSERT_NDEBUG(expr) RUBY_ASSERT_MESG_WHEN(RUBY_NDEBUG, expr, #expr)
#define RUBY_ASSERT_WHEN(cond, expr) RUBY_ASSERT_MESG_WHEN(cond, expr, #expr)
#define RUBY_ASSERT_ALWAYS(expr) RUBY_ASSERT_MESG_WHEN(TRUE, expr, #expr)
#define RUBY_ASSERT_ALWAYS(expr) RUBY_ASSERT_MESG_WHEN(TRUE, expr, #expr)
#if ! RUBY_NDEBUG
#if RUBY_DEBUG
# define RBIMPL_ASSERT_OR_ASSUME(_) RUBY_ASSERT(_)
#elif defined(RBIMPL_HAVE___ASSUME)
# define RBIMPL_ASSERT_OR_ASSUME(_) RBIMPL_ASSUME(_)