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2022-01-03DetailRoberto Ierusalimschy3-8/+8
Warnings with clang when using long double for Lua floats.
2022-01-02New year (2022)Roberto Ierusalimschy2-3/+3
2021-12-22Bug: finalizer calling exit can corrupt finalization orderRoberto Ierusalimschy3-5/+34
'os.exit' can call lua_close again, separating new finalizers created after all previous finalizers were already separated.
2021-12-21DetailsRoberto Ierusalimschy2-2/+2
correction in macro for hard tests + type in comment
2021-12-15Bug: finalizers can be called with an invalid stackRoberto Ierusalimschy1-1/+1
The call to 'checkstackGC' can run finalizers, which will find an inconsistent CallInfo, as 'ci' is half updated at the point of call.
2021-12-14Fix debug information about finalizersRoberto Ierusalimschy5-27/+35
The flag CIST_FIN does not mark a finalizer, but the function that was running when the finalizer was called. (So, the function did not call the finalizer, but it looks that way in the stack.)
2021-12-13Bug: GC is not reentrantRoberto Ierusalimschy9-27/+57
As the GC is not reentrant, finalizers should not be able to invoke it.
2021-12-10Bug: Lua stack still active when closing a stateRoberto Ierusalimschy1-0/+1
2021-11-25Main 'mainposition' replaced by 'mainpositionTV'Roberto Ierusalimschy1-19/+16
Handle values in table keys as the special cases they are, and not the other way around.
2021-11-25Wrong assert in 'collectvalidlines'Roberto Ierusalimschy2-2/+2
2021-11-16Corrected bug in 'luaD_tryfuncTM'Roberto Ierusalimschy2-2/+3
The pointer to the metamethod can be invalidated by a finalizer that can run during a GC in 'checkstackGCp'. (This commit also fixes a detail in the manual.) Bug introduced in commit 91673a8ec.
2021-11-10Avoid OP_VARARGPREP for active linesRoberto Ierusalimschy2-1/+51
when building the table 'activelines' for a vararg function, this first instruction does not make the first line active.
2021-11-08Bug: Wrong status in coroutine during resetRoberto Ierusalimschy3-5/+47
When closing variables during 'coroutine.close' or 'lua_resetthread', the status of a coroutine must be set to LUA_OK; a coroutine should not run with any other status. (See assertion in 'lua_callk'.) After the reset, the status should be kept as normal, as any error was already reported.
2021-11-03Bug: C stack overflow with coroutinesRoberto Ierusalimschy2-2/+18
'coroutine.resume' did not increment counter of C calls when continuing execution after a protected error (that is, while running 'precover').
2021-10-29More uniform implementation for tail callsRoberto Ierusalimschy3-44/+58
'luaD_pretailcall' mimics 'luaD_precall', handling call metamethods and calling C functions directly. That makes the code in the interpreter loop simpler. This commit also goes back to emulating the tail call in 'luaD_precall' with a goto, as C compilers may not do proper tail calls and the C stack can overflow much sooner than the Lua stack (which grows as the metamethod is added to it).
2021-10-18Removed goto's in 'luaD_precall'Roberto Ierusalimschy2-25/+28
(plus a detail in lauxlib.h.)
2021-10-11Avoid taking the address of a 'TValue' fieldRoberto Ierusalimschy2-10/+10
That structure can be packed in the future.
2021-10-11DocumentationRoberto Ierusalimschy4-5/+13
Better explanation about the guaranties of multiple assignment in the manual.
2021-09-22Avoid overflows when incrementing parameters in CRoberto Ierusalimschy6-9/+39
Any C function can receive maxinteger as an integer argument, and therefore cannot increment it without some care (e.g., doing unsigned arithmetic as the core does).
2021-09-15Using 'inline' in some functionsRoberto Ierusalimschy5-15/+32
According to ISO C, "making a function an inline function suggests that calls to the function be as fast as possible." (Not available in C89.)
2021-09-03Revamp of format validation in 'string.format'Roberto Ierusalimschy3-36/+118
When calling 'sprintf', not all conversion specifiers accept all flags; some combinations are undefined behavior.
2021-08-18'luaD_tryfuncTM' checks stack space by itselfRoberto Ierusalimschy3-9/+11
2021-08-18Undo simplification of tail calls (commit 901d760)Roberto Ierusalimschy3-51/+51
Not that simpler and slower.
2021-08-18Detail in 'testes/math.lua'Roberto Ierusalimschy1-0/+1
Added a print with the random seeds used in the tests of 'random'.
2021-08-16Option '-l' can give a name for the global variable.Roberto Ierusalimschy2-15/+27
Sintax for this option now is '-l [globname=]modname'.
2021-08-11Added tests for string reuse by the scannerRoberto Ierusalimschy2-1/+25
2021-08-11Improved documentation for 'lua_getinfo'Roberto Ierusalimschy1-18/+24
2021-07-22Bug: luaL_tolstring may get confused with negative indexRoberto Ierusalimschy3-0/+20
When object has a '__name' metafield, 'luaL_tolstring' used the received index after pushing a string on the stack.
2021-07-22Bug: Negation in 'luaV_shiftr' may overflowRoberto Ierusalimschy2-1/+6
Negation of an unchecked lua_Integer overflows with mininteger.
2021-07-21Correction on documentation of string-buffer operationsRoberto Ierusalimschy1-4/+4
All string-buffer operations can potentially change the stack in unspecified ways; the push/pop documentation in the manual should reflect that.
2021-06-30Simplification in the parameters of 'luaD_precall'Roberto Ierusalimschy3-14/+24
The parameters 'nresults' and 'delta1', in 'luaD_precall', were never meaningful simultaneously. So, they were combined in a single parameter 'retdel'.
2021-06-20Bug: 'local function' can assign to '<const>' variablesRoberto Ierusalimschy2-0/+3
2021-06-14C functions can be tail called, tooRoberto Ierusalimschy4-29/+29
A tail call to a C function can have the behavior of a "real" tail call, reusing the stack frame of the caller.
2021-06-11Simpler implementation for tail callsRoberto Ierusalimschy3-39/+33
Tail calls handled by 'luaD_precall', like regular calls, to avoid code duplication.
2021-06-09Avoid the term "undefined behavior" in the manualRoberto Ierusalimschy1-3/+2
2021-05-24'index2value' more robustRoberto Ierusalimschy1-5/+13
'index2value' accepts pseudo-indices also when called from a Lua function, through a hook.
2021-05-24DetailsRoberto Ierusalimschy2-14/+7
- Removed unused (and trivial) definition LUA_UNSIGNEDBITS - Alignment structure in pack/unpack moved to a narrower scope
2021-04-16Bug: yielding in '__close' mess up number of returnsRoberto Ierusalimschy3-2/+71
Yielding in a __close metamethod called when returning vararg results changes the top and so messes up the number of returned values.
2021-04-12Align error messages for calling non-callable valuesRoberto Ierusalimschy1-11/+37
'pcall(foo)' message was "attempt to call a table value", while 'pcall(function () foo() end) message was "global 'foo' is not callable".
2021-04-10Bug: Lua source should not use C99 comments ("//")Roberto Ierusalimschy1-2/+4
2021-04-07Bug: tbc variables in "for" loops don't avoid tail callsRoberto Ierusalimschy2-6/+38
2021-03-30Changes in cache for function constantsRoberto Ierusalimschy2-8/+40
In 'lcode.c', when adding constants to the list of constants of a function, integers represent themselves in the cache and floats with integral values get a small delta to avoid collision with integers. (This change avoids creating artificial addresses; the old implementation converted integers to pointers to index the cache.)
2021-03-29New hash function for integer keysRoberto Ierusalimschy1-2/+14
When integer keys do not form a sequence, it is better to use all their bits to compute their hashes. (The previous implementation was quite bad for integer keys with common lower bits, and disastrous for integer keys changing only in their upper 32 bits.)
2021-03-29Allow yields inside '__pairs'Roberto Ierusalimschy2-1/+27
2021-03-29DetailsRoberto Ierusalimschy5-16/+32
Comments and small improvements in the manual.
2021-03-29Next release number (5.4.4)Roberto Ierusalimschy1-2/+2
2021-03-12Added option LUA_NOBUILTINv5.4.3Roberto Ierusalimschy1-2/+4
This option allows external code to avoid the use of gcc builtin macro '__builtin_expect' in the Lua API.
2021-03-12DetailsRoberto Ierusalimschy1-21/+40
Comments and order of hashing macros in 'ltable.c'.
2021-03-10File 'tracegc.lua' added to 'packtests'Roberto Ierusalimschy1-0/+1
2021-03-10New implementation for 'tbclist'Roberto Ierusalimschy2-13/+32
- Fixes a bug, by removing dummy nodes together with the node itself. (The previous implementation could leave dummy nodes in frames which otherwise had no tbc variables, and therefore would not close variables; that could leave 'tbclist' pointing higher than 'top', which could dangle if the stack shrank.) - Computes MAXDELTA based on the type of delta, to ease changing its type if needed. - Instead of 'isdummy', uses 'delta==0' to signal dummy nodes. (Dummy nodes always have MAXDELTA for their real delta.)