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Q66697: Compiler Incorrectly Generates 80186+ Code

Article: Q66697
Product(s): See article
Version(s): 6.00 6.00a | 6.00 6.00a
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist6.00 buglist6.00a | mspl13_c
Last Modified: 11-NOV-1990

The sample code below incorrectly generates the instruction "shl bx,
2" for 8086/8088 machines when compiled with the large or compact
memory model (/AL or /AC). When using an 8086/8088 machine, the only
valid second operands are cl and 1. The ability to use an immediate
value other than 1 was not available until the 80186.

Sample Code
-----------

extern int bar (double *,double *, double *, double *,
                int, int, void *, int, char, int);

void foo (double *, double *, double *, double *,
                int, int, int, int, int, int);

#define RESET 0x02

void foo (double * dPtr1, double *dPtr2, double *dPtr3,
          double * dPtr4, int i1, int i2, int i3, int i4,
          int i5, int i6)
{
   double **ldPtrPtr;

   bar(dPtr1, dPtr2, dPtr3, dPtr4, i4, i1, &ldPtrPtr[i4][i1],
       RESET, RESET, i6);
}

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