[LLVMbugs] [Bug 22386] New: addScopeVariable(llvm::LexicalScope*, llvm::DbgVariable*): Assertion `CurNum != ArgNum && "Duplicate argument"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22386

            Bug ID: 22386
           Summary: addScopeVariable(llvm::LexicalScope*,
                    llvm::DbgVariable*): Assertion `CurNum != ArgNum &&
                    "Duplicate argument"' failed.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: DebugInfo
          Assignee: unassignedbugs at nondot.org
          Reporter: aprantl at apple.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

struct A {
  int arg0;
  double arg1[2];
} a, b;

void fn3(A p1) {
  if (p1.arg0)
    a = p1;
}

void fn4() { fn3(b); }

void fn5() {
  while (1)
    fn4();
}

clang -cc1 -triple aarch64 -S -g -O3 -std=c++11 dbg-info.cpp


0x00000109:   DW_TAG_subprogram [15] *
                DW_AT_name [DW_FORM_strp]       ( .debug_str[0x000000a3] =
"fn5")
                ...

0x00000122:     DW_TAG_inlined_subroutine [13] *
                  DW_AT_abstract_origin [DW_FORM_ref4]  (cu + 0x00fd =>
{0x000000fd} "_Z3fn4v")
                  ...

0x00000135:       DW_TAG_inlined_subroutine [16] *
                    DW_AT_abstract_origin [DW_FORM_ref4]        (cu + 0x00b2 =>
{0x000000b2} "_Z3fn31A")
                    DW_AT_ranges [DW_FORM_sec_offset]   (0x00000000
                       [0x0000000000000080 - 0x0000000000000088)
                       [0x0000000000000098 - 0x00000000000000a8))
                    DW_AT_call_file [DW_FORM_data1]    
("/tmp/dbginfo/creduce/crash1/dbg-info.cpp")
                    DW_AT_call_line [DW_FORM_data1]     (11)

0x00000140:         DW_TAG_formal_parameter [10]  
                      DW_AT_location [DW_FORM_exprloc]  (<0x5> 6f 9d a0 01 20 )
                      DW_AT_abstract_origin [DW_FORM_ref4]      (cu + 0x00be =>
{0x000000be} "p1")

0x0000014b:         DW_TAG_formal_parameter [10]  
                      DW_AT_location [DW_FORM_exprloc]  (<0x5> 6f 9d a0 01 20 )
                      DW_AT_abstract_origin [DW_FORM_ref4]      (cu + 0x00be =>
{0x000000be} "p1")

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