** Use 'sigaction' when available. */

** read a sequence '[=*[' or ']=*]', leaving the last bracket. If ** sequence is well formed, return its number of '='s + 2; otherwise, ** return 1 if

** Sweep a list of objects to enter generational mode. Deletes dead ** objects and turns the non dead to old. All non-dead threads---which ** are now

Tests if a condition is satisfied with 'at' as origin for a search pass. * If sufficiently satisfied (check return value) then: * when 'imax' is NUL

** Decode one UTF-8 sequence, returning NULL if byte sequence is ** invalid. The array 'limits' stores the minimum value for each ** sequence length,

** Build a string with a "description" for the value 'o', such as ** "variable 'x'" or "upvalue 'y'". */

** Traverse a list making all its elements white and clearing their ** age. In incremental mode, all objects are 'new' all the time, ** except for fix

return i1 + i2 */

** Add integer part of 'x' to buffer and return new 'x' */

** returns the index for 'k' if 'k' is an appropriate key to live in ** the array part of a table, 0 otherwise. */

** Clears all gray lists, sweeps objects, and prepare sublists to enter ** generational mode. The sweeps remove dead objects and turn all ** surviving

** Auxiliary function to create the iteration function for 'lines'. ** The iteration function is a closure over 'io_readline', with ** the following u

** Resumes a coroutine. Returns the number of results for non-error ** cases or -1 for errors. */

** t[k] = value at the top of the stack (where 'k' is a string) */

** get (if 'get' is true) or set an upvalue from a closure */

** call all pending finalizers */

** If possible, shrink string table. */

** Raises an error if variable described by 'e' is read only */

** Check whether message is a control message. If so, execute the ** control or ignore it if unknown. */

** Check that 'arg' either is a table or can behave like one (that is, ** has a metatable with the required metamethods) */

** clear entries with unmarked keys from all weaktables in list 'l' */

** Code arithmetic operators ('+', '-', ...). If second operand is a ** constant in the proper range, use variant opcodes with K operands. */

** Emit an "extra argument" instruction (format 'iAx') */

** Emit code for order comparisons. When using an immediate operand, ** 'isfloat' tells whether the original value was a float. */

** Get the constant value from a constant expression */

** Try to "constant-fold" an operation; return 1 iff successful. ** (In this case, 'e1' has the final result.) */

** Traverse all ephemeron tables propagating marks from keys to values. ** Repeat until it converges, that is, nothing new is marked. 'dir' ** inverts

copy strings in stack from top - n up to top - 1 to buffer */

** Create a new label with the given 'name' at the given 'line'. ** 'last' tells whether label is the last non-op statement in its ** block. Solves al

** creates a new string object */

** Delete all objects in list 'p' until (but not including) object ** 'limit'. */

** Read an integer numeral from string 'fmt' or return 'df' if ** there is no numeral */

** Ensure expression value is in a register, making 'e' a ** non-relocatable expression. ** (Expression still may have jump lists.) */

** Ensure expression value is in register 'reg', making 'e' a ** non-relocatable expression. ** (Expression still may have jump lists.) */

** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and ** print any results. */

** Enter generational mode. Must go until the end of an atomic cycle ** to ensure that all objects are correctly marked and weak tables ** are cleared

** Search for an active label with the given name. */

Try to code a binary operator negating its second operand. ** For the metamethod, 2nd operand must keep its original value. */

** Finish a young-generation collection. */

** Continuation function for 'pcall' and 'xpcall'. Both functions ** already pushed a 'true' before doing the call, so in case of success ** 'finishpc

** First allocation will fail whenever not building initial state. ** (This fail will trigger 'tryagain' and a full GC cycle at every ** allocation.)

** Check whether 'i' can be stored in an 'sBx' operand. */

** Fix for instruction at position 'pc' to jump to 'dest'. ** (Jump addresses are relative in Lua). 'back' true means ** a back jump. */

** Generate code for a 'for' loop. */

** Free two registers in proper order */

** Does a full collection in generational mode. */

** Try to find a name for a function based on how it was called. */

The position buffers can exceed the stacksize on some platforms, and dynamic heap allocation is too slow. So instead, we assign a static memory region