Incorrect coverage report for shared library with __llvm_profile_write_file(void);

I am observing that llvm-cov does not report any coverage data for functions located in a shared library when the application exits using _exit(), even though profiling data is explicitly written using __llvm_profile_write_file().

This results in missing coverage information for shared libraries, while coverage for the main executable is reported correctly.

llvm-cov show --instr-profile=app.profdata myapp
/scratch/ankurraj/icx2025.3/shlib/foo.c:
1| |#include
2| |
3| 0|void foo(void){
4| |
5| 0| printf("Hellow world from foo\n");
6| 0|}

/scratch/ankurraj/icx2025.3/shlib/main.c:
1| |#include
2| |#include "foo.h"
3| |#include
4| |int __llvm_profile_write_file(void);
5| |
6| |
7| 1|int main() {
8| 1| printf("[main] calling foo()\n");
9| 1| foo();
10| 1| printf("[main] returned from foo()\n");
11| 1| __llvm_profile_write_file();
12| 1| _exit(0); << -- this is delebrate
13| 1|}

No Data was dumped for shared libraies

Reproduce the example with llvm-cov show --instr-profile=app.profdata myapp, focusing on the shared-library foo() path after __llvm_profile_write_file() and _exit(0). Done means the generated profile report includes executed functions from the shared library as well as the main executable.

Written by the indexing model from the issue text.