C-c C-s not always returning to the expected location

[Manuel Gómez]

Hello,

I'm still having some difficulties after upgrading to 7.1.

For example, returning to the previous location (C-c C-s) after a 
navigation to the declaration of an entity (C-c C-d) seems a bit 
chaotic, or I don't get the behaviour, compared to v4.00. Sometimes, 
after a C-c C-d going to an entity in the same file, an immediate C-c 
C-s goes to an unexpected place, instead of the location where C-c C-d 
was invoked. The only pattern that I have discover is that after that 
"erroneous" C-c C-s, a subsequent C-u C-SPC goes back to the correct 
place, so it's like there is some spurious mark in the stack.

Best regards,
Manuel