#819 Errors in PIC16's genMinus
The following program produces incorrect results where
indicated:
#include <pic18fregs.h>
#pragma stack 0x300 0x100
int main ()
{
volatile long res, val1, val2;
volatile long lres, lval1;
PORTE=0;
res = 0x1234;
res = 12 - res; // patch at 1500 (this failed)
val2 = 0x4567;
res = 0x2345;
res = res - val2; // patch at 1569
val1 = 0x2345;
res = 0x2344;
res = val1 - res; // patch at 1573 (this failed)
lval1 = 0x12345678L;
lres = 0x23456789L;
lres = lres - lval1; // patch at 1569 (this failed)
return 0;
}
I uploaded a patch for these issues.
The patch also simplifies the genMinus' code by
introducing efficient code for a more general case than
before (especially patching at 1488,1549 does so).
I left in "comments" for your convenience, feel free to
remove them.
Raphael Neider
Patch for genMinus
Logged In: YES
user_id=770505
Patch applied succesfully.
Bug fixed in SDCC v.2.4.5 #851