Make tests pass by default in UBSAN mode

- Adds macros to check if botan was compiled with a certain sanitizers.
- Automatically excludes the tests that are intended to provoke undefined
  behaviour from the test bench, when botan is compiled with UBSAN.
- Changes option `--avoid-undefined` to `--no-avoid-undefined` so the
  failing tests can be explicitly activated when needed.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/build-data/buildh.in b/src/build-data/buildh.in
index d42e85ac4..807b6f479 100644
--- a/src/build-data/buildh.in
+++ b/src/build-data/buildh.in
@@ -52,6 +52,10 @@
 
 #define BOTAN_BUILD_COMPILER_IS_%{cc_macro}
 
+%{for sanitizer_types}
+#define BOTAN_HAS_SANITIZER_%{i|upper}
+%{endfor}
+
 #define BOTAN_TARGET_ARCH_IS_%{arch|upper}
 %{if endian}
 #define BOTAN_TARGET_CPU_IS_%{endian|upper}_ENDIAN