Strange issue after merging Lua 5.3.3
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- Subject: Strange issue after merging Lua 5.3.3
- From: Dibyendu Majumdar <mobile@...>
- Date: 2016年6月16日 23:30:44 +0100
Hi,
I am testing a merge of Lua 5.3.3 into Ravi and am facing a strange
issue which I have not yet been able to debug.
When I run the Lua tests (_port=1) and enable lua_assert() in the
code, the following assertion in lcode.c fails when compiling
math.lua.
static void freereg (FuncState *fs, int reg) {
if (!ISK(reg) && reg >= fs->nactvar) {
fs->freereg--;
lua_assert(reg == fs->freereg);
}
}
The assertion failure occurs when compiling math.lua at line 551:
assert(1 % math.huge == 1)
If I comment out this line then the tests pass.
I have tried running this line standalone and it doesn't cause a failure.
Obviously I have a modified version of the Lua code and it is likely
that I have made a mistake somewhere while merging but having scanned
through the changes several times I cannot locate the bug.
I have not yet tried to run the Lua tests using unchanged 5.3.3 code -
I will check that as well.
Any pointers as to what I should look for? I realize it is impossible
to comment on modified code base but I thought I shall ask just in
case there was something obvious I need to check.
BTW in the same math.lua script I was puzzled to see that the isNaN
function always returns true. Is that intentional?
Thanks and Regards
Dibyendu