diff --git a/runtime/libprofile/GCDAProfiling.c b/runtime/libprofile/GCDAProfiling.c index 4ffb12b15eb..712dba08be4 100644 --- a/runtime/libprofile/GCDAProfiling.c +++ b/runtime/libprofile/GCDAProfiling.c @@ -113,6 +113,20 @@ void llvm_gcda_start_file(const char *orig_filename) { recursive_mkdir(filename); output_file = fopen(filename, "wb"); + if (!output_file) { + filename[0] = '\0'; /* The size of filename should be big enough. */ + char *cptr = strrchr(orig_filename, '/'); + strcat(filename, cptr ? cptr + 1 : orig_filename); + output_file = fopen(filename, "wb"); + + if (!output_file) { + fprintf(stderr, "LLVM profiling runtime: while opening '%s': ", + filename); + perror(""); + exit(1); + } + } + /* gcda file, version 404*, stamp LLVM. */ #ifdef __APPLE__ fwrite("adcg*204MVLL", 12, 1, output_file);