GDB and QT : Debugging woes

[balasaravanan]

hi all




please find the attached png image for more idea on the problem

when setting a break point to the function showHoldLines, the breakpoint is set in the correct file.

while setting a break point to the function fn_1, the break point is set in the incorrect file.

i see this problem in most of the functions that use STL containers.

anybody knows what is happening.

thanks and regards.
B

[jdiewald]

The listing may, in fact, not be erroneous. The functions that you talk about are trivial, with little content. fn_1 doesn't actually do anything - it declares something that isn't used. The compiler may be inlining functions and simplifying the code because it can, even with little or no optimization turned on. Many compilers can and will do this even without the inline keyword. When this happens, the symbol information for the method that gets inlined can be lost - there's nothing left of "your" code. (This is actually a difficult problem for debugger writers - which I was many lifetimes ago.) In these cases, the debugger is showing the sources for the code that remains in the generated stream of instructions that implement your program.