[tor-commits] [tor/master] Make the no-assertions-during-coverage check into a configure option

[nickm@xxxxxxxxxxxxxx]

commit af116081f9d30d0830dc3c099c9c87f37b07d1f0
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Thu Feb 4 12:51:52 2016 -0500

    Make the no-assertions-during-coverage check into a configure option
    
    Closes ticket 18242.
    
    The rationale here is that I like having coverage on by default in my
    own working directory, but I always want assertions turned on unless
    I'm doing branch coverage specifically.
---
 configure.ac      | 2 ++
 src/common/util.h | 7 ++++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 1a78f41..d92f1e6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,6 +41,8 @@ AC_ARG_ENABLE(unittests,
    AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
 AC_ARG_ENABLE(coverage,
    AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
+AC_ARG_ENABLE(asserts-in-tests,
+   AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
 AC_ARG_ENABLE(system-torrc,
    AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
 
diff --git a/src/common/util.h b/src/common/util.h
index 165bc0d..d05ffa7 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -45,9 +45,10 @@
 #error "Sorry; we don't support building with NDEBUG."
 #endif
 
-/* Don't use assertions during coverage. It leads to tons of unreached
- * branches which in reality are only assertions we didn't hit. */
-#ifdef TOR_COVERAGE
+/* Sometimes we don't want to use assertions during branch coverage tests; it
+ * leads to tons of unreached branches which in reality are only assertions we
+ * didn't hit. */
+#if defined(TOR_UNIT_TESTS) && defined(DISABLE_ASSERTS_IN_UNIT_TESTS)
 #define tor_assert(a) STMT_BEGIN                                        \
   (void)(a);                                                            \
   STMT_END



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