jas_math.h: suppress -Wshift-negative-value in assertions

jasper-maint · Jun 17, 2020 · 681296e · 681296e
1 parent 27d5a88
commit 681296e
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/src/libjasper/include/jasper/jas_math.h b/src/libjasper/include/jasper/jas_math.h
@@ -121,6 +121,13 @@ extern "C" {
 *
 \******************************************************************************/
 
+#ifdef __clang__
+/* suppress clang warning "shifting a negative signed value is
+   undefined" in the assertions below */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wshift-negative-value"
+#endif
+
 JAS_ATTRIBUTE_DISABLE_USAN
 inline static int jas_int_asr(int x, int n)
 {
@@ -173,6 +180,10 @@ inline static int jas_fast32_asl(int_fast32_t x, int n)
 	return x << n;
 }
 
+#ifdef __clang__
+#pragma GCC diagnostic pop
+#endif
+
 /******************************************************************************\
 * Safe integer arithmetic (i.e., with overflow checking).
 \******************************************************************************/