[cfe-dev] Source Location of the return statement.

[Won Tae Joo via cfe-dev]

Hello,

I was using llvm/clang 3.9 for developement, and something did not work as
I intended.

Given a code like below, when I do ./clang -cc1 -ast-dump test.cpp,

#include <stdio.h>
int main(int argc, char ** argv)
{
  int mul = 2;
  mul = 4 * mul;
  return 0;
}

it prints an AST like..

`-FunctionDecl 0xd128d48 </home/joo/test.cpp:2:1, line:7:1> line:2:5 main
'int (int, char **)'
  |-ParmVarDecl 0xd128bd0 <col:10, col:14> col:14 argc 'int'
  |-ParmVarDecl 0xd128c70 <col:20, col:28> col:28 argv 'char **'
  `-CompoundStmt 0xd128ff0 <line:3:1, line:7:1>
    |-DeclStmt 0xd128ec8 <line:4:3, col:14>
    | `-VarDecl 0xd128e48 <col:3, col:13> col:7 used mul 'int' cinit
    |   `-IntegerLiteral 0xd128ea8 <col:13> 'int' 2
    |-BinaryOperator 0xd128f90 <line:5:3, col:13> 'int' lvalue '='
    | |-DeclRefExpr 0xd128ee0 <col:3> 'int' lvalue Var 0xd128e48 'mul' 'int'
    | `-BinaryOperator 0xd128f68 <col:9, col:13> 'int' '*'
    |   |-IntegerLiteral 0xd128f08 <col:9> 'int' 4
    |   `-ImplicitCastExpr 0xd128f50 <col:13> 'int' <LValueToRValue>
    |     `-DeclRefExpr 0xd128f28 <col:13> 'int' lvalue Var 0xd128e48 'mul'
'int'
    `-ReturnStmt 0xd128fd8 <line:6:3, col:10>
      `-IntegerLiteral 0xd128fb8 <col:10> 'int' 0
Please note where the end of the BinaryOperator, and the ReturnStmt is
pointing.
Either cases was not pointing to the end of the statements but rather
pointing to the beginning of second 'mul' and the beginning of '0'
respectively. I've checked in 6.0 for the same thing and happens to point
to the same location. So I'd assume that I was misunderstanding the usage
of Stmt::getLocEnd(). May I ask what's the proper way to retrieve the end
location of a statement?

Thanks,
Won-Tae
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