https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110827
Bug ID: 110827
Summary: C++20 coroutines aren't being measured by gcov
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: mwd at md5i dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 55648
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55648&action=edit
Simple bug exemplar
When compiling with `--coverage` and running a program that utilizes C++20
coroutines, the statements in the coroutines aren't measured by gcov.
Compile the attached file, `foo.cpp`, with:
`g++ -std=c++20 --coverage -O0 -ggdb3 -o foo foo.cpp`
Then run the resulting `foo`, followed by `gcov foo.cpp`.
The resulting output in `foo.cpp.gcov` does not include lines 28 or 29 of
`foo.cpp`, the contents of the coroutine `foo()`. In my tests this happens
with any coroutine of any size, though functions called by a coroutine are
covered properly.
