diff --git a/tests/libc/fc_libc.c b/tests/libc/fc_libc.c
index f221adb6c2c98ea443984e0257a2e8510e8824cc..c122ff2268ffa3f05bfb7a6677e4ca81e7b84ea2 100644
--- a/tests/libc/fc_libc.c
+++ b/tests/libc/fc_libc.c
@@ -1,6 +1,6 @@
 /* run.config*
  PLUGIN: @EVA_PLUGINS@ metrics
- EXECNOW: BIN @PTEST_NAME@.sav @frama-c@ -cpp-extra-args='-nostdinc -I@PTEST_SHARE_DIR@/libc' @PTEST_FILE@ -save @PTEST_NAME@.sav
+ EXECNOW: BIN @PTEST_NAME@.sav LOG @PTEST_NAME@_sav.res LOG @PTEST_NAME@_sav.err @frama-c@ -cpp-extra-args='-nostdinc -I@PTEST_SHARE_DIR@/libc' @PTEST_FILE@ -save @PTEST_NAME@.sav >@PTEST_NAME@_sav.res 2>@PTEST_NAME@_sav.err
  MODULE: check_libc_naming_conventions, check_const
    OPT: -load %{dep:@PTEST_NAME@.sav} -print -cpp-extra-args='-nostdinc -I@PTEST_SHARE_DIR@/libc' -eva @EVA_CONFIG@ -then -lib-entry -no-print
  MODULE:
diff --git a/tests/libc/oracle/fc_libc_sav.err b/tests/libc/oracle/fc_libc_sav.err
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tests/libc/oracle/fc_libc_sav.res b/tests/libc/oracle/fc_libc_sav.res
new file mode 100644
index 0000000000000000000000000000000000000000..6bfe1d501b92186f4b4283d9c3e9202294c1e834
--- /dev/null
+++ b/tests/libc/oracle/fc_libc_sav.res
@@ -0,0 +1 @@
+[kernel] Parsing fc_libc.c (with preprocessing)