fix undefined behaviour null offset sum

EBI-Metagenomics · Oct 9, 2023 · 6d05364 · 6d05364
1 parent 979e49f
commit 6d05364
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/hmmer-reader/CMakeLists.txt b/hmmer-reader/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.20.2 FATAL_ERROR)
 project(
   hmmer_reader
-  VERSION 0.7.2
+  VERSION 0.7.3
   LANGUAGES C)
 set(PROJECT_DESCRIPTION "HMMER ASCII file reader.")
 

diff --git a/hmmer-reader/src/fsm.c b/hmmer-reader/src/fsm.c
@@ -242,7 +242,7 @@ static int header(struct args *a)
     assert(a->tok->id == HMR_TOK_WORD || a->tok->id == HMR_TOK_NL);
     if (a->tok->id == HMR_TOK_WORD)
     {
-        if (a->aux->prof.pos > a->aux->prof.begin + 1)
+        if (a->aux->prof.pos && (a->aux->prof.pos > a->aux->prof.begin + 1))
         {
             *(a->aux->prof.pos - 1) = ' ';
             a->aux->prof.pos++;
@@ -310,7 +310,7 @@ static int field_content(struct args *a)
     if (a->tok->id == HMR_TOK_WORD || a->tok->id == HMR_TOK_HMM ||
         a->tok->id == HMR_TOK_COMPO)
     {
-        if (a->aux->prof.pos > a->aux->prof.begin + 1)
+        if (a->aux->prof.pos && (a->aux->prof.pos > a->aux->prof.begin + 1))
         {
             *(a->aux->prof.pos - 1) = ' ';
             a->aux->prof.pos++;