Breakpoint in template is ignored, is there a workaround?

Question

Whenever I set a breakpoint in a template it is ignored. Is there a workaround for this? Example: Breakpoint at if (list.size() .. ignored.

template <typename ObjectType, typename ContainerType> 
ContainerType CListModelBase<ObjectType, ContainerType>::
                  sortListByColumn(const ContainerType &list, int column,
                                   Qt::SortOrder order)
{
   if (list.size() < 2) return list; // nothing to do
   // ... 
}

PS: For gdb such a workaround is described here

Env. Win7, VC2013, QtCreator 3.1.1

score 2 · Answer 1 · answered Aug 29 '14 at 20:05

2

This is caused by inlining and various other optimizations that make it harder for the debugger to know the address of the code.

If you don't mind recompiling, you can always force a break point to be placed in the generated code:

#include <intrin.h>

...

__debugbreak();

Source: [http://msdn.microsoft.com/en-us/library/f408b4et.aspx]

answered Aug 29 '14 at 20:05

slajoie

440
8
20

1

alternately _asm int3; – Nowayz Aug 29 '14 at 20:30

score 1 · Answer 2 · answered Aug 29 '14 at 20:44

A Workaround I have used: write your own assert.

I have a version of assert, simplified from a boost assert, that

a) can display information, even unrelated to the assert

b) can spin in a simple delay loop

-- allowing the user to attach the debugger and investigate, back-trace, etc.

c) can print only or exit or print then exit

d) allows the user to manually resume the program as if nothing had happened (except a big delay)

For both fully-optimized and un-optimized, such an assert can ease your burden.

Breakpoint in template is ignored, is there a workaround?

2 Answers2