| Commit message (Collapse) | Author | Age | Files | Lines |
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Warnings are mostly a tool to help developers (e.g., by showing hidden
error messages); regular users usually don't need to see them.
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Added the concept of control messages to the warning system, plus the
implementation of the controls "@on"/"@off" to turn warnings on/off.
Moreover, the warning system in the test library adds some other
controls to ease the test of warnings.
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A call to 'math.randomseed()' returns the two components of the seed
it set, so that they can be used to set that same seed again.
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The field 'L->nCcalls' now counts downwards, so that the C-stack
limits do not depend on the stack size.
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Instead of a 'tocont' flag, the function 'warn' in Lua now receives all
message pieces as multiple arguments in a single call. Besides being
simpler to use, this implementation ensures that Lua code cannot create
unfinished warnings.
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- The warning functions get an extra parameter that tells whether
message is to be continued (instead of using end-of-lines as a signal).
- The user data for the warning function is a regular value, instead
of a writable slot inside the Lua state.
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Errors in finalizers (__gc metamethods) are never propagated.
Instead, they generate a warning.
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The warning system is just a way for Lua to emit warnings, messages
to the programmer that do not interfere with the running program.
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* unification of the 'nny' and 'nCcalls' counters;
* external C functions ('lua_CFunction') count more "slots" in
the C stack (to allow for their possible use of buffers)
* added a new test script specific for C-stack overflows. (Most
of those tests were already present, but concentrating them
in a single script easies the task of checking whether
'LUAI_MAXCCALLS' is adequate in a system.)
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Version numbers and dates (mostly wrong) from RCS keyword strings
removed from all test files; only the file name are kept.
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From the point of view of 'git', all names are relative to the root
directory of the project. So, file names in '$Id:' also should be
relative to that directory: the proper name for test file 'all.lua'
is 'testes/all.lua'.
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During generational collection, a userdatum must become gray and
go to a gray list after being traversed (like tables), so that
'correctgraylist' can handle it to its next stage.
This commit also added minimum tests for the generational collector,
including one that would detect this bug.
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