[Bug c/12822] New: [tree-ssa] Bogus warning with asm in statement expression

["falk at debian dot org" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12822

           Summary: [tree-ssa] Bogus warning with asm in statement
                    expression
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: falk at debian dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev68-unknown-linux-gnu
  GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu

falk@juist:/tmp% cat test.c          
void
ev4_flush_tlb_current_page(unsigned long addr)
{
  ({
      unsigned long r17;
      r17 = addr;
      asm ("");
  });
}

falk@juist:/tmp% gcc -v -c test.c    
Reading specs from
/usr/local/stow/gcc-tree-ssa-2003.10.29/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/specs
Configured with: ../configure --disable-nls --enable-languages=c++
Thread model: posix
gcc version 3.5-tree-ssa 20031029 (merged 20031026)
 /usr/local/stow/gcc-tree-ssa-2003.10.29/bin/../libexec/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/cc1 -quiet -v -iprefix /usr/local/stow/gcc-tree-ssa-2003.10.29/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/ test.c -quiet -dumpbase test.c -mcpu=ev67 -auxbase test -version -o /tmp/ccDWYo0U.s
ignoring nonexistent directory
"/usr/local/stow/gcc-tree-ssa-2003.10.29/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/../../../../alphaev68-unknown-linux-gnu/include"
ignoring nonexistent directory "NONE/include"
ignoring duplicate directory
"/usr/local/lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/../../../../alphaev68-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/stow/gcc-tree-ssa-2003.10.29/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/include
 /usr/local/include
 /usr/include
End of search list.
GNU C version 3.5-tree-ssa 20031029 (merged 20031026) (alphaev68-unknown-linux-gnu)
        compiled by GNU C version 3.5-tree-ssa 20031029 (merged 20031026).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
test.c: In function `ev4_flush_tlb_current_page':

test.c:7: warning: statement-expressions should end with a non-void expression
 as -no-mdebug -o test.o /tmp/ccDWYo0U.s