Is this a lint bug?

[Lee A. Butler]

Can someone please explain why lint isn't happy with the following program?
Am I really supposed to cast *loc to be "(signed char)*loc" which seems to
be what is necessary?  I thought that "signed char" was strictly an ANSI C
construct.

1 >cat test.c
#include <stdio.h>

main()
{
        char *loc;
        char cp[64];

        loc = "hello world";
        
        (void)sprintf(cp, "%s=\"%c\"\n", "the first character", *loc);
        (void)printf("%s", cp);

        return(0);
}
2 >lint test.c

test.c
==============
Warning: (10)  sprintf: (char) format, (unsigned char) arg (arg 4)
3 >cc -o test test.c
4 >test
the first character="h"

For Those who want gritty details about environment:

4 >versions
I = Installed, R = Removed

  Name                  Date      Description
I  dev                  90/09/14  4D1-3.3 Development System
I  dwb                  89/11/20  DWB Opt PD, S4-DWB-3.2, 808-0012-010
I  eoe1                 90/09/14  4D1-3.3 Execution Only Environment (part
                                    1)
I  eoe2                 90/09/14  4D1-3.3 Execution Only Environment (part
                                    2)
I  ftn                  90/09/14  4D1-3.3 Fortran Option
I  maint1                         (unknown product)
I  maint1               90/09/14  Maint1 Product 4D1-3.3.1
I  nfs                  90/09/14  4D1-3.3 Network File System
I  pfa                  90/09/14  Power Fortran Accelerator
R  slip                 90/02/09  IRIS Slip Product
R  vis                  90/01/12  Personal Visualizer PD, 808-0160-001
I  vtools               89/11/17  IRIS Visual Tools PD, 808-0167-001
5 >hinv
8 25 MHZ IP7 Processors
FPU: MIPS R2010A/R3010 VLSI Floating Point Chip Revision: 2.0
CPU: MIPS R2000A/R3000 Processor Chip Revision: 2.0
Data cache size: 64 Kbytes
Instruction cache size: 64 Kbytes
Main memory size: 128 Mbytes
Xylogics 1/2 inch tape controller 0 ctlr type: 772 firmware: 2.5
8 25 MHZ IP7 Processors
FPU: MIPS R2010A/R3010 VLSI Floating Point Chip Revision: 2.0
CPU: MIPS R2000A/R3000 Processor Chip Revision: 2.0
Data cache size: 64 Kbytes
Instruction cache size: 64 Kbytes
Main memory size: 128 Mbytes
Xylogics 1/2 inch tape controller 0 ctlr type: 772 firmware: 2.5
ENP-10 Ethernet controller 1, firmware version 4 (SGI)
Integral Ethernet controller: Version 2
Xylogics 754 4-drive SMD disk controller 0: Firmware version 2.7.0
SMD Disk drive: unit 3 on Xylogics controller 0
SMD Disk drive: unit 2 on Xylogics controller 0
SMD Disk drive: unit 1 on Xylogics controller 0
SMD Disk drive: unit 0 on Xylogics controller 0
Xylogics 754 4-drive SMD disk controller 1: Firmware version 2.7.0
SMD Disk drive: unit 3 on Xylogics controller 1
SMD Disk drive: unit 2 on Xylogics controller 1
SMD Disk drive: unit 1 on Xylogics controller 1
SMD Disk drive: unit 0 on Xylogics controller 1
Integral SCSI controller 0: Version WD33C93
Disk drive: unit 1 on SCSI controller 0
                                      

Lee A. Butler
SLCBR-VL-V					Internet: butler at brl.mil
Ballistic Research Laboratory			   Phone: (301) 278-9200
Aberdeen Proving Grounds, MD 21005-5066