[LLVMbugs] [Bug 5983] New: asmparser accepts {} as function body

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Sat Jan 9 10:34:23 PST 2010


http://llvm.org/bugs/show_bug.cgi?id=5983

           Summary: asmparser accepts {} as function body
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: LLVM assembly language parser
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: gohman at apple.com
                CC: llvmbugs at cs.uiuc.edu


The asm parser accepts this code:

define void @def() {}

Running opt -S on it silently turns it into this:

declare void @def()

It would be better to issue an error for this case.

This came up because in some hand-written IR where an empty function body was
intended, but the "ret void" was forgotten. It's confusing for this to be
silently accepted and converted to a declaration.


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