I'm getting this error when compiling my project in X64. (But no error in NT32
for some reason, probably a 32bit vs 64bit thing).
error LNK2001: unresolved external symbol memcpy
I don't use memcpy at all, I only use CopyMem. So it must be the compiler
optimizing code and inserting memcpy here and there.
I added compile option /FAcs I found 20+ instances of memcpy.
Is there a trick around this so I don't have to modify lots of code?
If there is no way around it, should I not be parsing STRUCTS through functions
and use pointers instead?
Here's a snippet of an example where memcpy is being inserted:
//// H
typedef struct { INTN Left; INTN Top; INTN Right; INTN Bottom;}
RECT;
//// C
BOOLEAN PointInRect(INTN x, INTN y, RECT rcDest){ if(x < rcDest.Left)
return FALSE; if(x > rcDest.Right) return FALSE; if(y < rcDest.Top)
return FALSE; if(y > rcDest.Bottom) return FALSE; return TRUE;}
//// COD
; 12 : if( PointInRect(rcSrc.Left, rcSrc.Top, rcDest) ) return
TRUE;
0001b 41 bd 20 00 00 00 mov r13d, 32 ;
00000020H 00021 48 8d 48 c8 lea rcx, QWORD PTR [rax-56] 00025
4d 8b c5 mov r8, r13 00028 48 8b fa mov rdi, rdx
0002b e8 00 00 00 00 call memcpy 00030 49 8b 2c 24 mov
rbp, QWORD PTR [r12] 00034 49 8b 74 24 08 mov rsi, QWORD PTR [r12+8]
00039 48 3b 6c 24 20 cmp rbp, QWORD PTR $T22009[rsp] 0003e 7c 1c
jl SHORT $LN6@RectOverla 00040 48 3b 6c 24 30 cmp rbp,
QWORD PTR $T22009[rsp+16] 00045 7f 15 jg SHORT
$LN6@RectOverla 00047 48 3b 74 24 28 cmp rsi, QWORD PTR $T22009[rsp+8]
0004c 7c 0e jl SHORT $LN6@RectOverla 0004e 48 3b 74 24 38
cmp rsi, QWORD PTR $T22009[rsp+24] 00053 7f 07 jg SHORT
$LN6@RectOverla$LN33@RectOverla: 00055 b0 01 mov al, 1 00057
e9 b3 00 00 00 jmp $LN7@RectOverla$LN6@RectOverla:
UDK2014, Win8 64bit, VC2010, MdeModulePkg
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