commit 08d1ac4f2ae81a79d19cbb830c3c88cb2998cb6e Author: Nick Mathewson nickm@torproject.org Date: Thu Sep 8 09:00:24 2016 -0400

Patch from rubiate: disable openbsd memory protections in test-memwipe

Test-memwipe is *supposed* to invoke undefined behavior, alas.

Closes 20066. --- changes/ticket20066 | 5 +++++ src/test/test-memwipe.c | 6 ++++++ 2 files changed, 11 insertions(+)

diff --git a/changes/ticket20066 b/changes/ticket20066 new file mode 100644 index 0000000..970793d --- /dev/null +++ b/changes/ticket20066 @@ -0,0 +1,5 @@ + o Minor features (testing): + - Disable memory protections on OpenBSD when testing memwipe(). + The test deliberately invokes undefined behaviour which the + protections interfere with. Patch from "rubiate". Closes ticket + 20066. diff --git a/src/test/test-memwipe.c b/src/test/test-memwipe.c index 2d40283..8187c45 100644 --- a/src/test/test-memwipe.c +++ b/src/test/test-memwipe.c @@ -35,6 +35,12 @@ const char *s = NULL; sum += (unsigned char)buf[i]; \ }

+#ifdef __OpenBSD__ +/* Disable some of OpenBSD's malloc protections for this test. This helps + * us do bad things, such as access freed buffers, without crashing. */ +const char *malloc_options="sufjj"; +#endif + static unsigned fill_a_buffer_memset(void) {