[LLVMbugs] [Bug 2399] New: cbe generates illegal code for sret of array

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2399

           Summary: cbe generates illegal code for sret of array
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


Testcase:

target datalayout =
"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
target triple = "i686-pc-linux-gnu"
        %union.a = type [4 x i8]
define void @a(%union.a* sret  %agg.result, ...) {
        ret void
}

gcc output from generated code:
<stdin>:109: error: ‘a’ declared as function returning an array
<stdin>:110: warning: conflicting types for built-in function ‘malloc’
<stdin>:131: error: ‘a’ declared as function returning an array
<stdin>: In function ‘a’:
<stdin>:134: warning: return makes integer from pointer without a cast
<stdin>:134: warning: function returns address of local variable

llc doesn't seem to have any issues with this construct in general.

(This is generated by clang; I could fix clang not to do this, but I don't see
anything particularly wrong with it.)


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