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| author | Ben Wiederhake <BenWiederhake.GitHub@gmx.de> | 2021-11-21 03:35:20 +0100 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2021-11-21 13:52:25 +0100 |
| commit | d5c687b50f9eca74079ce49314e3da96963b57c6 (patch) | |
| tree | 45c61aaa0880c4de759d7d9788ac5b68cad3996e | |
| parent | 253d62cb18e6afed31ddc5ff5459c6d73c124a06 (diff) | |
| download | serenity-d5c687b50f9eca74079ce49314e3da96963b57c6.zip | |
kcov-example: Print helpful error if kcov feature is missing
| -rw-r--r-- | Userland/Utilities/kcov-example.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Userland/Utilities/kcov-example.cpp b/Userland/Utilities/kcov-example.cpp index 577a8c4435..b8d45a1aaf 100644 --- a/Userland/Utilities/kcov-example.cpp +++ b/Userland/Utilities/kcov-example.cpp @@ -21,6 +21,7 @@ int main(void) int fd = open("/dev/kcov0", O_RDWR); if (fd == -1) { perror("open"); + fprintf(stderr, "Could not open /dev/kcov0 - is ENABLE_KERNEL_COVERAGE_COLLECTION enabled?\n"); return 1; } if (ioctl(fd, KCOV_SETBUFSIZE, num_entries) == -1) { |