CompuServe Thread

Hi – I would like to report a bug in the CL386 x86 C compiler for NT in the March 1993 CD release. The problem is a place where a volatile reference is moved across a sequence point in my program: outp(…); if (*p != …) In this segment of the function, the CMP for the if is placed BEFORE the OUT. I realize that this is not proper code for an NT driver, but I fear this bug could appear in other situations and produce problems. Even minor changes to the function caused the problem to go away, so try the file as-is to reproduce the bug. Here is the line I used in my makefile: bug.cod: bug.c cl386 -nologo -I i386\ -I . -I ..\inc -I e:\ddk\inc -I e:\ddk\inc -I e:\ddk\inc\crt -D_X86_=1 -Di386=1 -DCONDITION_HAND LING=1 -DWIN32_LEAN_AND_MEAN=1 -DNT_UP=1 -DNT_INST=0 -DSTD_CALL -DDBG=1 -DDEVL=1 -DFPO=0 /c /Zel /Zp8 /W3 /Gz -H63 /G4 /Ox /Oy- /Zd -Fobug.obj -Fcbug.cod bug.c I will upload the C file and the COD file that demonstrate the problem to library section 1 as CLBUG.ZIP. Mark Wickham LaserMaster Corp. There is 1 Reply.