Re: Weird error situation
Re: Weird error situation
- Subject: Re: Weird error situation
- From: Laurence Harris <email@hidden>
- Date: Tue, 25 Sep 2007 17:46:05 -0400
On Sep 24, 2007, at 12:57 AM, Adam wrote:
...but I have #pragma once at the top! Doesn't that pretty much fix
the problem? I used Cris Suter's advice and slapped an "extern" on
the ones that it said were having a problem, and bingo! it's fixed.
The only thing now is that it's giving me warnings about some bool
functions that I have:
[snip]
/Users/atg/Desktop/Projects/Programming Project/Builds/
Basic_SDLOGL_001/Sources/sdl_tetris_002.cpp:111: warning: the
address of 'bool tile_down()', will always evaluate as 'true'
[snip]
Here's the code:
bool collision_check()
{
//if something's in the way return false otherwise return true
}
bool tile_down()
{
next_piece = curr_piece;
next_piece.y--;
if (!collision_check())
{
return false;
}else
{
return true;
}
}
If collision_check returns false then tile_down should also return
false! ... right?
I just realized that Scott was right in his assessment after he sent
me something privately (thanks, Scott). I had previously answered
your question, but your question isn't actually related to the
warning. The warning is being generated by code you haven't included
here. The warning says "the *address* of 'bool tile_down()', will
always evaluate as 'true'." So somewhere else in code we aren't
seeing here there must be something like:
if ( tile_down )
instead of:
if ( tile_down() )
The first is using the address of the function (which is never 0 and
hence always interpreted as true), while the second is using the
return value of the function. This warning is there specifically to
point out cases where the parentheses were left off unintentionally.
Larry
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