From: ypicchi-arm <67330153+ypicchi-arm@users.noreply.github.com>
Date: Thu, 22 Aug 2024 07:32:53 +0000 (+0100)
Subject: Make vectorscan accept \0 starting pattern (#312)
X-Git-Tag: vectorscan/5.4.12^2~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4c49f2aa263a577d8beb57f7958fb889bfa53db;p=thirdparty%2Fvectorscan.git

Make vectorscan accept \0 starting pattern (#312)

Vectorscan used to reject such pattern because they were being compared
to "" and found to be an empty string. We now check the pattern length
instead.

Signed-off-by: Yoan Picchi <yoan.picchi@arm.com>
---

diff --git a/src/compiler/compiler.cpp b/src/compiler/compiler.cpp
index aa8de4ba..ec9295c9 100644
--- a/src/compiler/compiler.cpp
+++ b/src/compiler/compiler.cpp
@@ -417,7 +417,7 @@ void addLitExpression(NG &ng, unsigned index, const char *expression,
                            "HS_FLAG_SOM_LEFTMOST are supported in literal API.");
     }
 
-    if (!strcmp(expression, "")) {
+    if (expLength == 0) {
         throw CompileError("Pure literal API doesn't support empty string.");
     }