[LLVMbugs] [Bug 5173] New: [Diagnosis RFE] - Clang should have a diagnosis for unused parameters in inline asm statement .

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5173

           Summary: [Diagnosis RFE] - Clang should have a diagnosis for
                    unused parameters in inline asm statement.
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Solaris
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Semantic Analyzer
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: eocallaghan at auroraux.org
                CC: llvmbugs at cs.uiuc.edu


G'Day,

As of trunk 83939.
Clang should have a diagnosis for unused parameters in inline asm statement.

Versions:
-bash-3.2$ /opt/SUNWspro/bin/cc -V       
cc: Sun C 5.9 SunOS_i386 Patch 124868-08 2008/11/25

-bash-3.2$ /opt/gcc4/bin/gcc --version
gcc (GCC) 4.2.4

-bash-3.2$ /opt/clang/bin/clang --version
clang version 1.1 (trunk 83939)

Outputs:
-bash-3.2$ /opt/clang/bin/clang t.c 
-bash-3.2$ /opt/gcc4/bin/gcc t.c 
-bash-3.2$ /opt/SUNWspro/bin/cc t.c 
"t.c", line 6: warning: parameter in inline asm statement unused: %1

Test Case:
-bash-3.2$ cat t.c 
int main() {
  int a,b;
  asm ( "nop;"
        :"=%c" (a)
        : "r" (b)
        );
  return 0;
}


Cheers,
Edward.


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