[libFuzzer] fix missing close on opened file

vitalybuka · vitalybuka · commit 9b6135bf2a7a · 2019-02-26T19:33:00.000Z
Summary: When running the standalone main on a large corpus, I eventually get a EMFILE error ("Too many open files"). Patch by Paul Chaignon Reviewers: kcc, vitalybuka Reviewed By: vitalybuka Subscribers: lebedev.ri, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D58622 llvm-svn: 354918
diff --git a/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c b/compiler-rt/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c
@@ -32,6 +32,7 @@ int main(int argc, char **argv) {
     fseek(f, 0, SEEK_SET);
     unsigned char *buf = (unsigned char*)malloc(len);
     size_t n_read = fread(buf, 1, len, f);
+    fclose(f);
     assert(n_read == len);
     LLVMFuzzerTestOneInput(buf, len);
     free(buf);
