Fix #14022: MISRA 7.3 false negative on hexadecimal literal (danmar#7676)

Author: amacgregor-sym

addons/misra.py

@@ -2074,7 +2074,9 @@ def misra_7_2(self, data):
                 self.reportError(token, 7, 2)
 
     def misra_7_3(self, rawTokens):
-        compiled = re.compile(r'^[0-9.]+[Uu]*l+[Uu]*$')
+        # Match decimal digits, hex digits, decimal point, and e/E p/P floating
+        # point constant exponent separators.
+        compiled = re.compile(r'^(0[xX])?[0-9a-fA-FpP.]+[Uu]*l+[Uu]*$')
         for tok in rawTokens:
             if compiled.match(tok.str):
                 self.reportError(tok, 7, 3)

addons/test/misra/misra-test.c

@@ -302,6 +302,20 @@ struct misra_7_3_s
 {
   uint32_t ul_clka;
   uint32_t test123l;
+  float t = 6.02E23l; // 7.3
+  float t1 = 6.02E23L;
+  float u = 0xa1B2.p12l; // 7.3
+  float u1 = 0xa1B2.p12L;
+  float v = 0xa1B2.P12l; // 7.3
+  float v1 = 0xa1B2.P12L;
+  float w = 6.02e23l; // 7.3
+  float w1 = 6.02e23L;
+  unsigned long  x = 0xabcul; // 7.3
+  unsigned long x1 = 0xabcuL;
+  unsigned long y = 0xABCUl; // 7.3
+  unsigned long y1 = 0xABCUL;
+  unsigned long z = 0XdeadBeEfUl; // 7.3
+  unsigned long z1 = 0XdeadBeEfUL;
 };
 
 static void misra_7_3(void) {