suppress sanitizer warnings when writing invalid enums

Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
AcademySoftwareFoundation · Aug 18, 2020 · 2da1302 · 2da1302
1 parent 023e879
commit 2da1302
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diff --git a/OpenEXR/IlmImf/ImfDeepImageStateAttribute.cpp b/OpenEXR/IlmImf/ImfDeepImageStateAttribute.cpp
@@ -58,6 +58,12 @@ template <>
 void
 DeepImageStateAttribute::writeValueTo
     (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os, int version) const
+#if defined (__clang__)
+    // _value may be an invalid value, which the clang sanitizer reports
+    // as undefined behavior, even though the value is acceptable in this
+    // context.
+    __attribute__((no_sanitize ("undefined")))
+#endif
 {
     unsigned char tmp = _value;
     Xdr::write <StreamIO> (os, tmp);

diff --git a/OpenEXR/IlmImf/ImfEnvmapAttribute.cpp b/OpenEXR/IlmImf/ImfEnvmapAttribute.cpp
@@ -57,6 +57,12 @@ EnvmapAttribute::staticTypeName ()
 template <>
 void
 EnvmapAttribute::writeValueTo (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os, int version) const
+#if defined (__clang__)
+    // _value may be an invalid value, which the clang sanitizer reports
+    // as undefined behavior, even though the value is acceptable in this
+    // context.
+    __attribute__((no_sanitize ("undefined")))
+#endif
 {
     unsigned char tmp = _value;
     Xdr::write <StreamIO> (os, tmp);