4 files changed, 16 insertions, 0 deletions
diff --git a/src/stdlib/__constraint_info.h b/src/stdlib/__constraint_info.h
index 0cdae024..b0d3b7d4 100644
--- a/src/stdlib/__constraint_info.h
+++ b/src/stdlib/__constraint_info.h
@@ -3,3 +3,7 @@ struct __constraint_info {
 	int value;
 	int signal;
 };
+
+/*
+STDC(-1)
+*/
diff --git a/src/stdlib/_stdlib.h b/src/stdlib/_stdlib.h
index d8120e66..de5a97d0 100644
--- a/src/stdlib/_stdlib.h
+++ b/src/stdlib/_stdlib.h
@@ -35,4 +35,8 @@ extern char **environ;
 #define environ __stdlib.environ
 #endif
 
+/*
+STDC(-1)
+*/
+
 #endif
diff --git a/src/stdlib/_strtod.h b/src/stdlib/_strtod.h
index aa7e60d4..32645aff 100644
--- a/src/stdlib/_strtod.h
+++ b/src/stdlib/_strtod.h
@@ -94,3 +94,7 @@
 			ret *= -1;
 		}
 	}
+
+/*
+STDC(-1)
+*/
diff --git a/src/stdlib/_strtoi.h b/src/stdlib/_strtoi.h
index 21b22ee9..dc160aeb 100644
--- a/src/stdlib/_strtoi.h
+++ b/src/stdlib/_strtoi.h
@@ -121,3 +121,7 @@
 	} else {
 		ret *= sign;
 	}
+
+/*
+STDC(-1)
+*/