Bug 336405

Description Jeff Johnston 2011-02-04 17:32:11 EST

1. Create the default executable Hello World program (Managed Make).
2. Edit the program as follows:

int main(void) {
   int a = 3;
   puts("Hello World");
   printf("a is %d\n", a);
   return 0;
}

3. Go the Project->Properties->C/C++ Build->Settings and change the optimization
   level to -O2 instead of -O0.

4. Build the project and debug using gdb/mi.

   The first line it can stop at is the "puts" line as the int a = 3 line is
   optimized away.  This is expected.

   Note that the variable a does not appear in the Variables window.

5. click on the gdb executable and in the Console window type: print a

6. Click back on the debugging executable and hover over the variable a
   in the source window.

7. Step to the printf line where a is actually used. Again, note that
   a is not shown in the Variables Window.

In steps 5 and 6, gdb knows the value of a is 3 and so does the debug hover somehow, yet the variable a never gets shown in the Variables window.

This problem was discovered by the Autotools plug-in because the default compilation options chosen by autotools are: "-g -O2".

The problem occurs for CDI as well as DSF so the problem could exist in the gdb/mi protocol itself.  It also occurs in 7.0.2.