Scan build: Result of operation is garbage or undefined

common/utils/nr/nr_common.h

@@ -214,10 +214,6 @@ void nr_est_delay(int ofdm_symbol_size, const c16_t *ls_est, c16_t *ch_estimates
 #define CEILIDIV(a,b) ((a+b-1)/b)
 #define ROUNDIDIV(a,b) (((a<<1)+b)/(b<<1))
 
-#define cmax(a,b)  ((a>b) ? (a) : (b))
-#define cmax3(a,b,c) ((cmax(a,b)>c) ? (cmax(a,b)) : (c))
-#define cmin(a,b)  ((a<b) ? (a) : (b))
-
 #ifdef __cplusplus
 #ifdef min
 #undef min

common/utils/utils.h

@@ -19,9 +19,21 @@ extern "C" {
 
 #define sizeofArray(a) (sizeof(a)/sizeof(*(a)))
 
-#define cmax(a,b)  ((a>b) ? (a) : (b))
-#define cmax3(a,b,c) ((cmax(a,b)>c) ? (cmax(a,b)) : (c))
-#define cmin(a,b)  ((a<b) ? (a) : (b))
+// Prevent double evaluation in max macro
+#define cmax(a,b) ({ __typeof__ (a) _a = (a); \
+                     __typeof__ (b) _b = (b); \
+                     _a > _b ? _a : _b; })
+
+
+#define cmax3(a,b,c) ( cmax(cmax(a,b), cmax(b,c)) )  
+
+// Prevent double evaluation in min macro
+#define cmin(a,b) ({ __typeof__ (a) _a = (a); \
+                     __typeof__ (b) _b = (b); \
+                     _a < _b ? _a : _b; })
+
+
+
 
 #ifdef __cplusplus
 #ifdef min