[LLVMbugs] [Bug 918] NEW: c backend with array types can produce code rejected by gcc 4.0.1

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=918

           Summary: c backend with array types can produce code rejected by
                    gcc 4.0.1
           Product: libraries
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: C
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: pedronis at strakt.com


The C backend can currently (recent head) produce code with such patterns:

/* Global Declarations */
/* Structure forward decls */
struct l_structtype_s;

/* Typedefs */
typedef struct l_structtype_s l_fixarray_array3[3]; /* problematic 
declaration */
typedef struct l_structtype_s l_structtype_s;

/* Structure contents */
struct l_structtype_s {
  int field0;
};

gcc 4.0.1 will reject this with a "array type has incomplete element type" error.

this seems not valid C, precedently gcc accepted it as a (fragile) extension.



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