tree e82991cf800a47708aa4d0e8d0c09ef4643576cd
parent fa6011b18dc69485ab73199e701515ce2e3a74bd
author Dokyung Song <dokyungs@google.com> 1594931163 +0000
committer Copybara-Service <copybara-worker@google.com> 1616739665 -0700

[libFuzzer] Link libFuzzer's own interceptors when other compiler runtimes are not linked.

Summary: libFuzzer intercepts certain library functions such as memcmp/strcmp by defining weak hooks. Weak hooks, however, are called only when other runtimes such as ASan is linked. This patch defines libFuzzer's own interceptors, which is linked into the libFuzzer executable when other runtimes are not linked, i.e., when -fsanitize=fuzzer is given, but not others.

Reviewers: kcc, morehouse, hctim

Reviewed By: morehouse, hctim

Subscribers: krytarowski, mgorny, cfe-commits, #sanitizers

Tags: #clang, #sanitizers

Differential Revision: https://reviews.llvm.org/D83494

GitOrigin-RevId: f78d9fceea736d431e9e3cbca291e3909e3aa46d