[cfe-dev] Missing statements in the Clang print AST

[Miguel Aguilar]

Dimitri,

I think my mistake is that I was trying to have a look into the AST but 
the code is still not completely compiling due to errors while searching 
for headers. The standard c/c++ libraries are already set by default in 
clang or should I specify the paths to the system headers (e.g 
/usr/include ..)?

Thanks,

Miguel

On 01/18/2013 11:46 AM, Dmitri Gribenko wrote:
> On Fri, Jan 18, 2013 at 12:39 PM, Miguel Aguilar
> <miguel.aguilar at ice.rwth-aachen.de>  wrote:
>> Hi Dimitri,
>>
>> I wanted to be sure that the functions in the AST have the complete body of
>> the original code. By using the -ast-dump I got the following:
>>
>> void main() (CompoundStmt 0x57fca90<pc/consumer.cc:28:1, line:42:1>
>>    (DeclStmt 0x57fc110<line:29:3, col:10>
>>      (0x57fc030 "int n")
>>      (0x57fc0a0 "int j"))
>>    (ForStmt 0x57fca50<line:37:3, line:41:3>
>>      (DeclStmt 0x57fc358<line:37:8, col:15>
>>        (0x57fc2e0 "int i =
>>          (IntegerLiteral 0x57fc338<col:14>  'int' 0)"))
>>      (<<<NULL>>>)
>>      (BinaryOperator 0x57fc3f0<col:17, col:19>  '_Bool''<'
>>        (ImplicitCastExpr 0x57fc3c0<col:17>  'int'<LValueToRValue>
>>          (DeclRefExpr 0x57fc370<col:17>  'int' lvalue Var 0x57fc2e0 'i'
>> 'int'))
>>        (ImplicitCastExpr 0x57fc3d8<col:19>  'int'<LValueToRValue>
>>          (DeclRefExpr 0x57fc398<col:19>  'int' lvalue Var 0x57fc030 'n'
>> 'int')))
>>      (UnaryOperator 0x57fc440<col:22, col:23>  'int' postfix '++'
>>        (DeclRefExpr 0x57fc418<col:22>  'int' lvalue Var 0x57fc2e0 'i' 'int'))
>>      (CompoundStmt 0x57fc5d0<line:38:3, line:41:3>)))
>>
>> However, here I don't see the function call to the "printf" and the
>> statement "s = 5". Any ideas?
> Did you show us the complete source code file?  Do you get any errors
> if you remove -ast-dump?  (For example, errors about undeclared
> 'printf'?)  If there are errors, then what you see is the AST after
> error recovery.
>
> Dmitri
>