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-rw-r--r--src/utils.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/utils.cc b/src/utils.cc
index cb25bdf..9b791b0 100644
--- a/src/utils.cc
+++ b/src/utils.cc
@@ -45,7 +45,7 @@ FILE *Multipole_OpenOutputFile(CCTK_ARGUMENTS, const string &name)
if (fp == 0)
{
- CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING, (string("Could not open output file ") + output_name).c_str());
+ CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING, "%s", (string("Could not open output file ") + output_name).c_str());
}
return fp;