3 files changed, 14 insertions, 6 deletions

diff --git a/configure.sh b/configure.sh
index 60e375a..d5586db 100755
--- a/configure.sh
+++ b/configure.sh
@@ -2,8 +2,13 @@
 
 cc=${CC:-cc}
 
-detectarch() { ${cc} -march=native -dM -E - </dev/null | grep "$1"; }
-detectsan() { ${cc} -fsanitize=$1 -dM -E -x c - </dev/null | grep "SANITIZE"; }
+detectarch() {
+        ${cc} -march=native -dM -E - </dev/null 2>/dev/null | grep "$1"
+}
+detectsan() {
+        ${cc} -fsanitize=$1 -dM -E -x c - </dev/null 2>/dev/null \
+                | grep "SANITIZE"
+}
 
 [ -n "$(detectarch __AVX2__)" ] && detected="AVX2"
 [ -n "$(detectarch __ARM_NEON)" ] && detected="NEON"
diff --git a/src/cube_public.h b/src/cube_public.h
index 7f7b81c..ade8778 100644
--- a/src/cube_public.h
+++ b/src/cube_public.h
@@ -1,7 +1,7 @@
-int check(cube_t, char [static 22]);
+int check_error(cube_t, char [static 22]);
 
 int
-check(cube_t cube, char result[static 22])
+check_error(cube_t cube, char result[static 22])
 {
         if (!isconsistent(cube)) {
                 writecube("B32", zero, result);
@@ -25,7 +25,7 @@ nissy_compose(
 
         res = compose(c, p);
 
-        return check(res, result);
+        return check_error(res, result);
 }
 
 int
diff --git a/test/test.sh b/test/test.sh
index 3adee3a..8e50cf5 100755
--- a/test/test.sh
+++ b/test/test.sh
@@ -1,6 +1,9 @@
 #!/bin/sh
 
-detectsan() { cc -fsanitize=$1 -dM -E -x c - </dev/null | grep "SANITIZE"; }
+detectsan() {
+        cc -fsanitize=$1 -dM -E -x c - </dev/null 2>/dev/null \
+                | grep "SANITIZE"
+}
 
 re="${TEST:-$@}"