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* Note in the manual about using '...' as an expressionRoberto Ierusalimschy2022-09-081-5/+16
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* Corrected error message in 'table.remove'Roberto Ierusalimschy2022-09-071-1/+1
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* Changed the growth rate of string buffersRoberto Ierusalimschy2022-09-062-6/+7
| | | | | | | | The growth rate of string buffers was reduced from 2 to 1.5 (3/2). As string buffers start larger (256~1024 bytes), they don't need to grow that fast. Moreover, a lower rate allows multiplicative growth up to larger sizes (3/2 of the maximum). (After that, the growth becomes linear, which is mostly useless.)
* Bug: 'break' may not properly close variable in a 'for' loopRoberto Ierusalimschy2022-08-242-8/+28
| | | | | | | Function 'leaveblock' was generating "break" label before removing variables from the closing block. If 'createlabel' created a 'close' instruction (which it did when matching a goto/break that exited the scope of an upvalue), that instruction would use the wrong level.
* Simpler handling of Byte Order Mark (BOM)Roberto Ierusalimschy2022-08-232-26/+56
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* Bug: set correct pause when (re)entering gen. collection.Roberto Ierusalimschy2022-08-231-32/+31
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* Better documentation for 'multires' expressionsRoberto Ierusalimschy2022-08-193-75/+120
| | | | | | Manual has a new section explaining multires expressions, lists of expressions, and adjustments. This commit also corrects some comments in the code.
* More checks and documentation for uses of EXTRA_STACKRoberto Ierusalimschy2022-05-265-13/+47
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* Bug: 'lua_settop' may use an invalid pointer to stackRoberto Ierusalimschy2022-05-255-12/+34
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* 'luaV_concat' can use invalidated pointer to stackRoberto Ierusalimschy2022-05-231-3/+3
| | | | Bug introduced in commit 42d40581.
* 'lua_checkstack' doesn't need to check stack overflowRoberto Ierusalimschy2022-05-235-26/+17
| | | | | | 'luaD_growstack' already checks that. This commit also fixes an internal bug in 'luaD_growstack': a large 'n' could cause an arithmetic overflow when computing 'needed'.
* Save stack space while handling errorsRoberto Ierusalimschy2022-05-202-3/+8
| | | | | | | | | | Because error handling (luaG_errormsg) uses slots from EXTRA_STACK, and some errors can recur (e.g., string overflow while creating an error message in 'luaG_runerror', or a C-stack overflow before calling the message handler), the code should use stack slots with parsimony. This commit fixes the bug "Lua-stack overflow when C stack overflows while handling an error".
* Details (identation and typos)Roberto Ierusalimschy2022-05-102-3/+4
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* Factoring out common parts of 'codearith' and 'codebitwise'Roberto Ierusalimschy2022-05-061-25/+33
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* Bug: Wrong code generation in bitwise operationsRoberto Ierusalimschy2022-04-253-6/+42
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* New release number (5.4.5)Roberto Ierusalimschy2022-04-071-2/+2
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* DetailsRoberto Ierusalimschy2022-04-014-6/+17
| | | | | Comments + manual + identation + asserts about stack limits that were not allowing the use of the full stack
* Avoid computing invalid addressesRoberto Ierusalimschy2022-02-181-32/+89
| | | | | | luaV_execute should compute 'ra' only when the instruction uses it. Computing an illegal address is undefined behavior even if the address is never dereferenced.
* Bug: Lua can generate wrong code when _ENV is <const>Roberto Ierusalimschy2022-02-152-0/+11
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* Bug: lua.c assumes that argv has at least one elementRoberto Ierusalimschy2022-02-071-12/+23
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* Explanation of borders in the manualv5.4.4Roberto Ierusalimschy2022-01-131-10/+12
| | | | | | The explanation includes the limit case of maxinteger being a border. It also avoids the term "natural", which might include large floats with natural values.
* DetailRoberto Ierusalimschy2022-01-033-8/+8
| | | | Warnings with clang when using long double for Lua floats.
* New year (2022)Roberto Ierusalimschy2022-01-022-3/+3
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* Bug: finalizer calling exit can corrupt finalization orderRoberto Ierusalimschy2021-12-223-5/+34
| | | | | 'os.exit' can call lua_close again, separating new finalizers created after all previous finalizers were already separated.
* DetailsRoberto Ierusalimschy2021-12-212-2/+2
| | | | correction in macro for hard tests + type in comment
* Bug: finalizers can be called with an invalid stackRoberto Ierusalimschy2021-12-151-1/+1
| | | | | The call to 'checkstackGC' can run finalizers, which will find an inconsistent CallInfo, as 'ci' is half updated at the point of call.
* Fix debug information about finalizersRoberto Ierusalimschy2021-12-145-27/+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.)
* Bug: GC is not reentrantRoberto Ierusalimschy2021-12-139-27/+57
| | | | As the GC is not reentrant, finalizers should not be able to invoke it.
* Bug: Lua stack still active when closing a stateRoberto Ierusalimschy2021-12-101-0/+1
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* Main 'mainposition' replaced by 'mainpositionTV'Roberto Ierusalimschy2021-11-251-19/+16
| | | | | Handle values in table keys as the special cases they are, and not the other way around.
* Wrong assert in 'collectvalidlines'Roberto Ierusalimschy2021-11-252-2/+2
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* Corrected bug in 'luaD_tryfuncTM'Roberto Ierusalimschy2021-11-162-2/+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.
* Avoid OP_VARARGPREP for active linesRoberto Ierusalimschy2021-11-102-1/+51
| | | | | when building the table 'activelines' for a vararg function, this first instruction does not make the first line active.
* Bug: Wrong status in coroutine during resetRoberto Ierusalimschy2021-11-083-5/+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.
* Bug: C stack overflow with coroutinesRoberto Ierusalimschy2021-11-032-2/+18
| | | | | | 'coroutine.resume' did not increment counter of C calls when continuing execution after a protected error (that is, while running 'precover').
* More uniform implementation for tail callsRoberto Ierusalimschy2021-10-293-44/+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).
* Removed goto's in 'luaD_precall'Roberto Ierusalimschy2021-10-182-25/+28
| | | | (plus a detail in lauxlib.h.)
* Avoid taking the address of a 'TValue' fieldRoberto Ierusalimschy2021-10-112-10/+10
| | | | That structure can be packed in the future.
* DocumentationRoberto Ierusalimschy2021-10-114-5/+13
| | | | | Better explanation about the guaranties of multiple assignment in the manual.
* Avoid overflows when incrementing parameters in CRoberto Ierusalimschy2021-09-226-9/+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).
* Using 'inline' in some functionsRoberto Ierusalimschy2021-09-155-15/+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.)
* Revamp of format validation in 'string.format'Roberto Ierusalimschy2021-09-033-36/+118
| | | | | When calling 'sprintf', not all conversion specifiers accept all flags; some combinations are undefined behavior.
* 'luaD_tryfuncTM' checks stack space by itselfRoberto Ierusalimschy2021-08-183-9/+11
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* Undo simplification of tail calls (commit 901d760)Roberto Ierusalimschy2021-08-183-51/+51
| | | | Not that simpler and slower.
* Detail in 'testes/math.lua'Roberto Ierusalimschy2021-08-181-0/+1
| | | | Added a print with the random seeds used in the tests of 'random'.
* Option '-l' can give a name for the global variable.Roberto Ierusalimschy2021-08-162-15/+27
| | | | Sintax for this option now is '-l [globname=]modname'.
* Added tests for string reuse by the scannerRoberto Ierusalimschy2021-08-112-1/+25
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* Improved documentation for 'lua_getinfo'Roberto Ierusalimschy2021-08-111-18/+24
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* Bug: luaL_tolstring may get confused with negative indexRoberto Ierusalimschy2021-07-223-0/+20
| | | | | When object has a '__name' metafield, 'luaL_tolstring' used the received index after pushing a string on the stack.
* Bug: Negation in 'luaV_shiftr' may overflowRoberto Ierusalimschy2021-07-222-1/+6
| | | | Negation of an unchecked lua_Integer overflows with mininteger.
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