tests: Detect llvm coverage run and redirect to real I/O functions

Code coverage writes data to disk, we need to use real io functions at
this point so that the data is really written.

BUG=b:187647884
BRANCH=None
TEST=llvm-profdata merge -sparse default.profraw -o default.profdata
TEST=llvm-cov show ./flashrom_unit_tests
-instr-profile=default.profdata --format=html --output-dir=.

Change-Id: I21cc1d631e92fa19006b967e85676f108e80b307
Signed-off-by: Evan Benn <evanbenn@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69267
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/wraps.h b/tests/wraps.h
index 92b0c42cd..6cc956777 100644
--- a/tests/wraps.h
+++ b/tests/wraps.h
@@ -36,6 +36,7 @@ int __wrap_ioctl(int fd, unsigned long int request, ...);
 int __wrap_write(int fd, const void *buf, size_t sz);
 int __wrap_read(int fd, void *buf, size_t sz);
 FILE *__wrap_fopen(const char *pathname, const char *mode);
+FILE *__real_fopen(const char *pathname, const char *mode);
 FILE *__wrap_fopen64(const char *pathname, const char *mode);
 FILE *__wrap_fdopen(int fd, const char *mode);
 FILE *__real_fdopen(int fd, const char *mode);
@@ -59,6 +60,7 @@ int __wrap_setvbuf(FILE *fp, char *buf, int type, size_t size);
 int __wrap_fprintf(FILE *fp, const char *fmt, ...);
 int __wrap___vfprintf_chk(FILE *fp, const char *fmt, va_list args);
 int __wrap_fclose(FILE *fp);
+int __real_fclose(FILE *fp);
 int __wrap_feof(FILE *fp);
 int __wrap_ferror(FILE *fp);
 void __wrap_clearerr(FILE *fp);