From: Shivani Bhardwaj <shivanib134@gmail.com>
Date: Wed, 6 May 2020 18:00:53 +0000 (+0530)
Subject: rust: Add debug_validate_bug_on macro
X-Git-Tag: suricata-6.0.0-beta1~420
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6db1f19d621a1a07bceddcbf58876324a87ea92d;p=thirdparty%2Fsuricata.git

rust: Add debug_validate_bug_on macro

This macro allows to check if certain parts of the code are reachable
during fuzzing.
---

diff --git a/configure.ac b/configure.ac
index 127848234d..d738dfa99f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -536,6 +536,7 @@ return 0;
             AC_DEFINE([DEBUG_VALIDATION],[1],[Enable (debug) validation code output])
         fi
     ])
+    AM_CONDITIONAL([DEBUG_VALIDATION], [test "x$enable_debug_validation" = "xyes"])
 
   # profiling support
     AC_ARG_ENABLE(profiling,
diff --git a/rust/Cargo.toml.in b/rust/Cargo.toml.in
index 0200df1d8a..a41d2c3fe2 100644
--- a/rust/Cargo.toml.in
+++ b/rust/Cargo.toml.in
@@ -15,6 +15,7 @@ lua = []
 lua_int8 = ["lua"]
 strict = []
 debug = []
+debug-validate = []
 
 [dependencies]
 nom = "5.0"
diff --git a/rust/Makefile.am b/rust/Makefile.am
index 158d348b72..317f346515 100644
--- a/rust/Makefile.am
+++ b/rust/Makefile.am
@@ -19,6 +19,10 @@ if DEBUG
 RUST_FEATURES +=	debug
 endif
 
+if DEBUG_VALIDATION
+RUST_FEATURES +=	debug-validate
+endif
+
 if RUST_CROSS_COMPILE 
 RUST_TARGET = --target $(host_triplet)
 endif
diff --git a/rust/src/common.rs b/rust/src/common.rs
index 668d55c86e..ce386e695b 100644
--- a/rust/src/common.rs
+++ b/rust/src/common.rs
@@ -14,6 +14,22 @@ macro_rules! take_until_and_consume (
   );
 );
 
+#[cfg(not(feature = "debug-validate"))]
+#[macro_export]
+macro_rules! debug_validate_bug_on (
+  ($item:expr) => {};
+);
+
+#[cfg(feature = "debug-validate")]
+#[macro_export]
+macro_rules! debug_validate_bug_on (
+  ($item:expr) => {
+    if $item {
+        panic!("Condition check failed");
+    }
+  };
+);
+
 /// Convert a String to C-compatible string
 ///
 /// This function will consume the provided data and use the underlying bytes to construct a new