| Issue |
179660
|
| Summary |
Incorrect coverage report for shared library with __llvm_profile_write_file(void);
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
ankurrj7
|
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="" myapp
/scratch/ankurraj/icx2025.3/shlib/foo.c:
1| |#include <stdio.h>
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 <stdio.h>
2| |#include "foo.h"
3| |#include <unistd.h>
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
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