No symbol "<val>" in current context error for temporary variable in template class

No symbol "<val>" in current context error for temporary variable in template class

[Peng Yu]

Hi,

I have the following code. I try to print the variable temp in the
constructor of A. But gdb can not do that. The error message is shown
blow the C++ code. Would you please let me know how to make it work?

Thanks,
Peng

template <typename T>
class A {
  public:
    A(int a) {
      T temp = a + 1;
      _a = temp + 1;
          }
  private:
    T _a;
};

int main() {
  A<double> a(1);
}


$ gdb main
GNU gdb 6.4.90-debian
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welcome to change it and/or distribute copies of it under certain conditions.
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This GDB was configured as "x86_64-linux-gnu"...Using host
libthread_db library "/lib/libthread_db.so.1".

(gdb) start
Breakpoint 1 at 0x400510: file main.cc, line 13.
main () at main.cc:13
13        A<double> a(1);
(gdb) s
A (this=0x7fff250d7080, a=1) at main.cc:5
5             T temp = a + 1;
(gdb) n
6             _a = temp + 1;
(gdb) p temp
No symbol "temp" in current context.
(gdb)

Re: No symbol "<val>" in current context error for temporary variable in template class

[Andreas Schwab]

"Peng Yu" <pengyu.ut@gmail.com> writes:

> I have the following code. I try to print the variable temp in the
> constructor of A. But gdb can not do that. The error message is shown
> blow the C++ code. Would you please let me know how to make it work?

The compiler did not emit any information about the variable.  There is
nothing the debugger can do about.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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