adds workaround for Intel ICX bug

tests/common/test_common.c

@@ -62,7 +62,16 @@ int intersect(enum yac_edge_type edge_type_a,
               double lon_c, double lat_c, double lon_d, double lat_d,
               double * intersection) {
 
+// Intel ICX with O3 seems to use some vector operation for copying q to
+// intersection in the code below. However, this causes a segmentation vault
+// due to the alignment of q. By increasing the size of p to 4, the alignment
+// of q is correct.
+#define INTEL_ICX_BUG
+#ifdef INTEL_ICX_BUG
+  double a[3], b[3], c[3], d[3], p[4], q[3];
+#else
   double a[3], b[3], c[3], d[3], p[3], q[3];
+#endif
 
   LLtoXYZ_deg(lon_a, lat_a, a);
   LLtoXYZ_deg(lon_b, lat_b, b);