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-rw-r--r--gl/lib/cl-strtod.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/gl/lib/cl-strtod.h b/gl/lib/cl-strtod.h
index 51becd3cd..4f1197231 100644
--- a/gl/lib/cl-strtod.h
+++ b/gl/lib/cl-strtod.h
@@ -1,2 +1,4 @@
-double cl_strtod (char const *, char **restrict);
-long double cl_strtold (char const *, char **restrict);
+double cl_strtod (char const *, char **restrict)
+ _GL_ATTRIBUTE_NONNULL ((1));
+long double cl_strtold (char const *, char **restrict)
+ _GL_ATTRIBUTE_NONNULL ((1));