During debugging I fail in the source code basic_string.h: debug the code is very inconvenient

[AlekseyB]

Qt 5.10.1, Debian 9.2.3

I put the breakpoint, execution of the program comes to the need place, then I press F10, but instead of going to the next line of code, I start to study the implementation of the constructor of class string.

And this happens only with the Intel compiler, and gcc debugs correctly.
For both compiler I use:
QMAKE_CXXFLAGS += -O0

What am I doing wrong?

[AlekseyB]

This effect occurs if I use the Intel compiler, but with the GCC compiler everything works correctly.