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Make JSON parser perfectly conformant

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This commit is contained in:
Justine Tunney 2022-07-13 23:02:19 -07:00
parent 60164a7266
commit b707fca77a
7 changed files with 260 additions and 183 deletions
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8
third_party/lua/luaencodeluadata.c vendored
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@ -22,6 +22,7 @@
#include "libc/log/rop.h"
#include "libc/math.h"
#include "libc/mem/mem.h"
#include "libc/runtime/stack.h"
#include "libc/stdio/append.internal.h"
#include "libc/stdio/strlist.internal.h"
#include "libc/x/x.h"
@ -334,6 +335,11 @@ OnError:
static int SerializeTable(lua_State *L, char **buf, int idx,
struct Serializer *z, int depth) {
int rc;
intptr_t rsp, bot;
if ((intptr_t)__builtin_frame_address(0) < GetStackAddr() + PAGESIZE * 2) {
z->reason = "out of stack";
return -1;
}
RETURN_ON_ERROR(rc = LuaPushVisit(&z->visited, lua_topointer(L, idx)));
if (rc) return SerializeOpaque(L, buf, idx, "cyclic");
lua_pushvalue(L, idx); // idx becomes invalid once we change stack
@ -400,7 +406,7 @@ static int Serialize(lua_State *L, char **buf, int idx, struct Serializer *z,
int LuaEncodeLuaData(lua_State *L, char **buf, int idx, bool sorted) {
int rc, depth = 64;
struct Serializer z = {.reason = "out of memory", .sorted = sorted};
if (lua_checkstack(L, depth * 4)) {
if (lua_checkstack(L, depth * 3 + LUA_MINSTACK)) {
rc = Serialize(L, buf, idx, &z, depth);
free(z.visited.p);
if (rc == -1) {