// To test: // ~/cppcheck/cppcheck --dump --suppress=uninitvar --suppress=uninitStructMember misra/misra-test.c --std=c89 && python3 ../misra.py -verify misra/misra-test.c.dump #include "path\file.h" // 20.2 #include "file//.h" // 20.2 #include "file/*.h" // 20.2 #include "file'.h" // 20.2 #include // 20.2 #include "file,.h" // 20.2 #include /*abc*/ "file.h" // no warning /*foo*/#include "file.h" // no warning #include "./file.h" // no warning #include \ "file.h" #include /*abc*/ \ "file.h" #include "fi" "le.h" // 20.3 (strings are concatenated after preprocessing) #include "fi" // 20.3 #include // 20.3 #include PATH "file.h" // 20.3 #define H_20_3_ok "file.h" #include H_20_3_ok #include file.h // 20.3 #define H_20_3_bad file.h #include H_20_3_bad // TODO: 20.3 Trac #9606 #include "//file.h" // 20.2 #include "//file.h" H_20_3_bad // 20.2 20.3 //#include H_20_3_bad // no warning #include H_20_3_ok H_20_3_ok // 20.3 #include // no warning #include // 21.4 #include // 21.5 #include //21.6 #include //21.6 #include // 21.10 #include // 21.11 #include typedef unsigned char u8; typedef unsigned short u16; typedef unsigned int u32; typedef signed int s32; typedef unsigned long long u64; /* // */ // 3.1 /* /* */ // 3.1 //// // http://example.com // no warning void misra_2_7_unused_param (int *param1, int unused_param) // 2.7 { *param1 = 42U; } void misra_2_7_used_params (int *param1, int param2, int param3) { (void)param3; *param1 = param2; } void misra_3_2(int enable) { // This won't generate a violation because of subsequent blank line \ int y = 0; int x = 0; // 3.2 non-compliant comment ends with backslash \ if (enable != 0) { ++x; // This is always executed // 3.2 potentially non-compliant comment ends with trigraph resolved to backslash ??/ ++y; // This is hidden if trigraph replacement is active } (void)printf("x=%i, y=%i\n", x, y); } extern int misra_5_1_extern_var_hides_var_x; extern int misra_5_1_extern_var_hides_var_y; //5.1 int misra_5_1_var_hides_var________a; int misra_5_1_var_hides_var________b; int misra_5_1_var_hides_var________b1; int misra_5_1_var_hides_var________b2; //5.1 int misra_5_1_var_hides_var________c; //5.1 int misra_5_1_var_hides_var________d; //5.1 int misra_5_1_var_hides_var________e; //5.1 extern const uint8_t misra_5_2_var1; const uint8_t misra_5_2_var1 = 3; // no warning static int misra_5_2_var_hides_var______31x; static int misra_5_2_var_hides_var______31y;//5.2 static int misra_5_2_function_hides_var_31x; void misra_5_2_function_hides_var_31y(void) {}//5.2 void foo(void) { int i; switch(misra_5_2_func1()) //16.4 16.6 { case 1: { do { for(i = 0; i < 10; i++) { if(misra_5_2_func3()) //14.4 { int misra_5_2_var_hides_var_1____31x; int misra_5_2_var_hides_var_1____31y;//5.2 } } } while(misra_5_2_func2()); //14.4 } } } union misra_5_2_field_hides_field__63x { //19.2 int misra_5_2_field_hides_field__31x; int misra_5_2_field_hides_field__31y;//5.2 }; struct misra_5_2_field_hides_field__63y { //5.2 int misra_5_2_field_hides_field1_31x; int misra_5_2_field_hides_field1_31y;//5.2 }; const char *s41_1 = "\x41g"; // 4.1 const char *s41_2 = "\x41\x42"; const char *s41_3 = "\x41" "\x42"; const char *s41_4 = "\x41" "g"; const char *s41_5 = "\x41\xA"; const char *s41_6 = "\xA\x41"; const char *s41_7 = "\xAA\xg\x41"; // 4.1 const char *s41_8 = "\xAA\x\x41"; // 4.1 const char *s41_9 = "unknown\gsequence"; const char *s41_10 = "simple\nsequence"; const char *s41_11 = "string"; int c41_3 = '\141t'; // 4.1 int c41_4 = '\141\t'; int c41_5 = '\0'; int c41_6 = '\0\t'; int c41_7 = '\12\t'; int c41_8 = '\0t'; // 4.1 int c41_9 = '\12'; int c41_10 = '\12\n'; int c41_11 = '\12n'; // 4.1 int c41_12 = '\12323'; // 4.1 int c41_13 = '\123\3'; int c41_14 = '\777\777'; int c41_15 = 'a'; void misra_4_1() { (void)printf("\x41g"); // 4.1 (void)printf("\x41\x42"); (void)printf("\x41" "g"); } const char *s42_1 = "String containing trigraphs ??-??-??"; // 4.2 const char *s42_2 = "String containing trigraph???=preceded by question mark"; // 4.2 const char *s42_3 = "No trigraph?(?'?)"; void misra_4_2() { (void)printf("??=Trigraph\n"); // 4.2 (void)printf("No?/Trigraph\n"); } #define misra_5_4_macro_hides_macro__31x 1 #define misra_5_4_param_hides_macro__31x 1 #define misra_5_4_macro_hides_macro__31y 2 //5.4 #define m1(misra_5_4_param_hides_macro__31y) 1 //5.4 #define m2(misra_5_4_param_hides_param__31x,misra_5_4_param_hides_param__31y) 1 //5.4 #ifdef misra_5_4_macro_hides_macro__31x #define misra_5_4_macro 1 // no warning #else #define misra_5_4_macro 2 // no warning #endif #define misra_5_5_var_hides_macro____31x 1 #define misra_5_5_functionhides_macro31x 1 #define misra_5_5_param_hides_macro__31x 1 #define misra_5_5_tag_hides_macro____31x 1 #define misra_5_5_hides_macro________31x 1 int misra_5_5_var_hides_macro____31y; //5.5 void misra_5_5_functionhides_macro31y(int misra_5_5_param_hides_macro__31y){(void)misra_5_5_param_hides_macro__31y;} //5.5 struct misra_5_5_tag_hides_macro____31y { //5.5 int x; }; void misra_5_5_func1() { switch(misra_5_5_func2()) //16.4 16.6 { case 1: { do { if(misra_5_5_func3()) //14.4 { int misra_5_5_hides_macro________31y; //5.5 } } while(misra_5_5_func2()); //14.4 } } } void misra_7_1() { int x = 066; // 7.1 } void misra_7_3() { long misra_7_3_a = 0l; //7.3 long misra_7_3_b = 0lU; //7.3 long long misra_7_3_c = 0Ull; //7.3 long long misra_7_3_d = 0ll; //7.3 long double misra_7_3_e = 7.3l; //7.3 } extern int a811[]; // 8.11 enum misra_8_12_a { misra_a1 = 1, misra_a2 = 2, misra_a3, misra_a4 = 3 }; //8.12 enum misra_8_12_b { misra_b1, misra_b2, misra_b3 = 3, misra_b4 = 3 }; // no-warning enum misra_8_12_c { misra_c1 = misra_a1, misra_c2 = 1 }; // no-warning enum misra_8_12_d { misra_d1 = 1, misra_d2 = 2, misra_d3 = misra_d1 }; // no-warning enum misra_8_12_e { misra_e1 = sizeof(int), misra_e2}; // no-crash void misra_8_14(char * restrict str) {(void)str;} // 8.14 void misra_9_5() { int x[] = {[0]=23}; // 9.5 } typedef char misra_10_1_char_t; #define MISRA_10_1_CHAR char void misra_10_1(uint8_t u, char c1, char c2) { int32_t i; char c; enum { E1 = 1 }; i = 3 << 1; // 10.1 i = (u & u) << 4; // no-warning c = c1 & c2; // 10.1 c = c1 << 1; // 10.1 i = c1 > c2; // no-warning i = E1 + i; // no-warning char ch1 = 'a'; char ch2 = 'b'; char ch3; ch3 = ch1 & ch2; // 10.1 misra_10_1_char_t ct1 = 'a'; misra_10_1_char_t ct2 = 'b'; misra_10_1_char_t ct3; ct3 = ct1 & ct2; // 10.1 MISRA_10_1_CHAR cd1 = 'a'; MISRA_10_1_CHAR cd2 = 'b'; MISRA_10_1_CHAR cd3; cd3 = cd1 & cd2; // 10.1 } void misra_10_1_ternary() { int a; uint8_t ui8; uint16_t ui16; int8_t i8; int16_t i16; a = ui16 << ui16; // 10.6 a = ui16 << (get_bool(42) ? ui16 : ui16); a = ui16 << (get_bool(42) ? ui16 : (get_bool(34) ? ui16 : ui16)); // 10.4 a = ui16 << (get_bool(42) ? (get_bool(34) ? ui16 : ui16) : ui16); // 10.4 a = ui16 << (get_bool(42) ? i16 : (get_bool(34) ? ui16 : ui16)); // 10.1 a = ui16 << (get_bool(42) ? (get_bool(34) ? ui16 : i16) : ui16); // 10.1 10.4 a = ui16 << (get_bool(42) ? (get_bool(34) ? ui16 : ui16) : i16); // 10.1 a = ui16 << (get_bool(42) ? (get_bool(34) ? ui16 : ui8) : ui8); // 10.4 a = ui16 << (get_bool(42) ? (get_bool(34) ? i16 : ui8) : ui8); // 10.1 10.4 a = (get_bool(42) ? (get_bool(34) ? ui16 : ui8) : ui8) << ui16; // 10.4 a = (get_bool(42) ? (get_bool(34) ? i16 : ui8) : ui8) << ui16; // 10.1 10.4 a = (get_bool(42) ? (get_bool(34) ? ui16 : i8) : ui8) << ui16; // 10.1 10.4 a = (get_bool(42) ? (get_bool(34) ? ui16 : ui8) : i8) << ui16; // 10.1 a = (get_bool(42) ? (get_bool(34) ? ui16 : ui8) : ui8) << (get_bool(19) ? ui16 : ui8); // 10.4 a = (get_bool(42) ? (get_bool(34) ? i16 : ui8) : ui8) << (get_bool(19) ? ui16 : ui8); // 10.1 10.4 a = (get_bool(42) ? (get_bool(34) ? ui16 : ui8) : ui8) << (get_bool(19) ? i16 : ui8); // 10.1 10.4 } void misra_10_4(u32 x, s32 y) { z = x + 3; // 10.4 enum misra_10_4_enuma { misra_10_4_A1, misra_10_4_A2, misra_10_4_A3 } a; enum misra_10_4_enumb { misra_10_4_B1, misra_10_4_B2, misra_10_4_B3 }; if ( misra_10_4_B1 > misra_10_4_A1 ) //10.4 { ; } z = x + y; //10.4 z = (a == misra_10_4_A3) ? x : y; //10.4 z = (a == misra_10_4_A3) ? y : y; // no-warning } void misra_10_6(u8 x, u32 a, u32 b, char c1, char c2) { u16 y = x+x; // 10.6 u16 z = ~u8 x ;//10.6 u32 c = ( u16) ( u32 a + u32 b ); //10.6 s32 i = c1 - c2; // FIXME: False positive for 10.6 (this is compliant). Trac #9488 } void misra_10_6_1(uint32_t *a, uint16_t b, uint16_t c) { *a = b + c ; // 10.6 } void misra_10_8(u8 x, s32 a, s32 b) { y = (u16)x; y = (u16)(x+x); // 10.8 y = (u16) (a + b) //10.8 } struct Fred {}; struct Wilma {}; void misra_11_3(u8* p, struct Fred *fred) { x = (u64*)p; // 11.3 struct Wilma *wilma = (struct Wilma *)fred; // 11.3 } void misra_11_4(u8*p) { u64 y = (u64)p; // 11.4 u8 *misra_11_4_A = ( u8 * ) 0x0005;// 11.4 s32 misra_11_4_B; u8 *q = ( u8 * ) misra_11_4_B; // 11.4 } void misra_11_5(void *p) { u16 *p16; x = (u8 *)p; // 11.5 p16 = p; // 11.5 } void misra_11_6() { void *p; p = (void*)123; // 11.6 x = (u64)p; // 11.6 p = ( void * )0; // no-warning (void)p; // no-warning } void misra_11_7(int *p, float f) { x = ( float ) p; //11.7 y = ( int * ) f; //11.7 } void misra_11_7_extra(int *p, float f, bool b) { (void) p; // no-warning (void) f; // no-warning (void) b; // no-warning } char * misra_11_8_const(const char *str) {(void)str;} char * misra_11_8(const char *str) { (void)misra_11_8_const(str); // no-warning return (char *)str; // 11.8 } #define MISRA_11_9_NULL_1 (1-1) #define MISRA_11_9_NULL_2 ( void * ) 0 #define MISRA_11_9_NULL_3 NULL void misra_11_9(){ int *p1 = (5-5); //11.9 int *p2 = MISRA_11_9_NULL_2 ; // no-warning int *p3 = MISRA_11_9_NULL_3 ; // no-warning if ( p1 == MISRA_11_9_NULL_1 ) //11.9 { ; } } void misra_12_1() { sz = sizeof x + y; // 12.1 a = (b * c) + d; a = b << c + d; // 12.1 } void misra_12_2(u8 x) { a = x << 8; // 12.2 } static int misra_12_3_v1 = 0, misra_12_3_v2; // 12.3 static int misra_12_3_v3, misra_12_3_v4; // 12.3 enum misra_12_3_e1 { M123A1, M123B1, M123C1 }; enum misra_12_3_e2 { M123A2 = 3, M123B2 = 4, M123C2 }; typedef enum misra_12_3_e3 { M123A3 , M123B3, M123C3 } misra_12_3_e3_t; typedef enum { M123A4 , M123B4, M123C4 } misra_12_3_e4_t; struct misra_12_3_s1 { int a; int b; int c, d; }; static struct misra_12_3_s1 misra_12_3_s1_inst = { 3, 4, 5, 6, // no warning }; typedef struct misra_12_3_s2 { int a; int b; int c, d; } misra_12_3_s2_t; typedef struct { int a; int b; int c, d; } misra_12_3_s3_t; void misra_12_3_fn1(int, int); static int misra_12_3_v5, misra_12_4_v6; // 12.3 void misra_12_3_fn2(int a, int b) // 2.7 { int d, e; } // 12.3 int misra_12_3_fn3(int a, int b) { return a+b;} static int misra_12_3_v5, misra_12_4_v6; // 12.3 void misra_12_3_fn4(const uint32_t value, uint8_t * const y) {} // 2.7 uint32_t misra_12_3_fn5(const uint32_t * const, const uint8_t) {} // 2.7 extern void misra_12_3_fn6(const uint32_t value, uint8_t * const y); extern uint32_t misra_12_3_fn7(const uint32_t * const, const uint8_t); #define MISRA_12_3_FN3_1(A, B) (misra_12_3_fn3(A, B)) #define MISRA_12_3_FN3_2(A, B) (misra_12_3_fn3(A, \ B)) #define MISRA_12_3_FN3_2_MSG(x) x, fflush(stderr) void misra_12_3(int, int, int); // no warning void misra_12_3(int a, int b, int c) { // no warning int a1, a2; // 12.3 int a3; int a4; // no warning int a5 = 9, a6; // 12.3 int a7, a8 = 11; // 12.3 int a9 = foo(), a10; // 12.3 int a11 = a = b = c; // 17.8 struct s1 {int a, b;}; int a12, a13; // 12.3 int a14, a15; misra_12_3_fn3(a14, a15); // 12.3 17.7 ; int a16, a17; // 12.3 int a18; int a19, a20; // 12.3 int a21, a22; int a23; // 12.3 int a24, // 12.3 a25; int a26 , a27; // 12.3 int a28 , // 12.3 a29; struct misra_12_3_s2 a30 = {1, 2}, a31; // 12.3 struct misra_12_3_s2 a32, a33; // 12.3 struct misra_12_3_s2 a34, a35 = {1, 2}, a36; // 12.3 int a37 = MISRA_12_3_FN3_1(a34, a35), a38; // 12.3 int a39, a40 = MISRA_12_3_FN3_1(a34, a35); // 12.3 int a41 = MISRA_12_3_FN3_2(a34, a35), a42; // 12.3 int a43, a44 = MISRA_12_3_FN3_2(a34, a35); // 12.3 MISRA_12_3_FN3_2_MSG(fprintf(stderr, "test\n")); // 12.3 f((1,2),3); // TODO for (i=0; i<10; i++, j++){} // 12.3 for (int i = 0, p = &a1; // 12.3 14.2 i < 42; ++i, ++p ) // 12.3 {} // No false positives in local and extern function calls misra_12_3_fn4(misra_12_3_fn5(&a1, 32), &a1); misra_12_3_fn4(misra_12_3_fn7(&a1, 32), &a1); misra_12_3_fn6(misra_12_3_fn5(&a1, 32), &a1); misra_12_3_fn6(misra_12_3_fn7(&a1, 32), &a1); const struct fun_t { int64_t x; uint32_t y; } moreFun[2U] = { { 900000000000000LL, 0x20000UL }, { 450000000000000LL, 0x10000UL } }; } #define MISRA12_4a 2000000000u #define MISRA12_4b 4000000000u #define volatile_macro_12_4 (*(volatile U32 *) 0xFFFFFC10u) void misra_12_4() { uint32_t x; bool t; x = 123456u * 123456u; // 12.4 x = MISRA12_4a + MISRA12_4b; // 12.4 x = 0u - 1u; // 12.4 x = t ? 0u : (0u-1u); // 12.4 x = 556200230913ULL; foo(&volatile_macro_12_4); // no crash } struct misra_13_1_t { int a; int b; }; uint8_t misra_13_1_x = 0; void misra_13_1_bar(uint8_t a[2]); void misra_13_1(int *p) { volatile int v; int a1[3] = {0, (*p)++, 2}; // 13.1 int a2[3] = {0, ((*p) += 1), 2}; // 13.1 int a3[3] = {0, ((*p) = 19), 2}; // 13.1 misra_13_1_bar((uint8_t[2]){ misra_13_1_x++, misra_13_1_x++ } ); // 13.1 int b[2] = {v,1}; struct misra_13_1_t c = { .a=4, .b=5 }; // no fp volatile int vv; int v = 42; int a1[3] = { 0, (*p)++, 2 }; // 13.1 int a2[2] = { [0]=19, [1]=42 }; int a3[2] = { [0]=v, [1]=42 }; int a4[2] = { [0]=0, [1]=(v+=1) }; // 13.1 int a5[2] = { [0]=0, [1]=(v+1) }; int a6[2] = { v, 1 }; int a6[2] = { v >>= 3 }; // 13.1 int a7[2] = { v, ++v }; // 13.1 int a8[1] = { vv }; // TODO: 13.1 Trac #9504 struct misra_13_1_t c01 = { 4, 5 }; struct misra_13_1_t c02 = { 16 == 1, 5+1 }; struct misra_13_1_t c03 = { (v += 1), 5+1 }; // 13.1 struct misra_13_1_t c04 = { v <<= 1, 5+1 }; // 13.1 struct misra_13_1_t c05 = { v += 1, 5+1 }; // 13.1 struct misra_13_1_t c06 = { (4.5 + 0.5), 1 }; struct misra_13_1_t c07 = { (4.5 + 0.5), ++v }; // 13.1 struct misra_13_1_t c08 = { (int)4.5, 5 }; struct misra_13_1_t c09 = { (int)4.5+(*p)++, 5 }; // 13.1 struct misra_13_1_t c10 = { (int)4.5, (*p)++ }; // 13.1 struct misra_13_1_t c11 = { .a=4+1, .b=3/3 }; struct misra_13_1_t c12 = { .a=4, .b=5 }; struct misra_13_1_t c13 = { (*v)<<=(int)(4.5), .b=5 }; // 13.1 struct misra_13_1_t c14 = { (*p)/=(int)(4.5) }; // 13.1 } void misra_13_3() { x = y++; // 13.3 } #define STRING_DEF_13_4 "This is a string" typedef struct { char string[sizeof(STRING_DEF_13_4)]; } s13_4_t; static s13_4_t s13_4 = { .string = STRING_DEF_13_4 // no-warning }; void misra_13_4() { if (x != (y = z)) {} // 13.4 else {} } void misra_13_5() { if (x && (y++ < 123)){} // 13.5 if (x || ((y += 19) > 33)){} // 13.5 if (x || ((y = 25) > 33)){} // 13.5 13.4 if (x || ((--y) > 33)){} // 13.5 else {} } void misra_13_6() { int a = sizeof(x|=42); // 13.6 a = sizeof(--x); // 13.6 13.3 return sizeof(x++); // 13.6 } void misra_14_1() { for (float f=0.1f; f<1.0f; f += 0.1f){} // 14.1 float a = 0.0f; int b = 10; while ((a<100.0f) || (b > 100)) //14.1 { a++; } do { ; } while ( a < 10.0f ); // no-warning } void misra_14_2_init_value(int32_t *var) { *var = 0; } void misra_14_2_fn1(bool b) { for (;i++<10;) {} // 14.2 for (;i<10;dostuff()) {} // TODO int32_t g = 0; int g_arr[42]; g += 2; // no-warning for (int32_t i2 = 0; i2 < 8; ++i2) { i2 += 2; // 14.2 i2 |= 2; // 14.2 g += 2; i2 ^= 2; // 14.2 if (i2 == 2) { g += g_arr[i2]; } misra_14_2_init_value(&i2); // TODO: Fix false negative in function call } for (misra_14_2_init_value(&i); i < 10; ++i) {} // no-warning FIXME: False positive for 14.2 Trac #9491 bool abort = false; for (i = 0; (i < 10) && !abort; ++i) { // no-warning if (b) { abort = true; } } for (;;) {} // no-warning int x = 10; for (int i = x; i < 42; i++) { x++; // no warning } for (int i = (x - 3); i < 42; i++) { x ^= 3; // no warning } for (int i = 0, j = 19; i < 42; i++) { // 12.3 14.2 i += 12; // 14.2 j /= 3; // TODO: 14.2 } for (int i = 0; i < 19; i++) { for (int j = 0; j < 42; j++) { i--; // 14.2 for (int k = j; k > 5; k--) { i++; // 14.2 for (int h = 35; h > 5; k++) // 14.2 {} } } } } static void misra_14_2_fn2() { int y = 0; // Handle cases when i is not treated as loop counter according MISRA // definition. for (int i = 0, j = 19; y < 10, --j > 10; y++, j--) { // 14.2 12.3 i++; // no warning } for (int i = 0, j = 19; y < 10, --j > 10; y++, j--) { // 14.2 12.3 i++; // no warning } for (int i = 0; y < 10; y++) { // TODO: 14.2 i++; // no warning } for (int i = 0; i < 10; y++) { // TODO: 14.2 i++; // no warning } for (int i = 0; y < 10; i++) { // TODO: 14.2 i++; // no warning } for (int i = 0; i < 10; (y+=i)) { i++; // no warning } // i is a loop counter according MISRA definition for (int i = 0; i < 10; i++) { i++; // 14.2 if (++i > 5) { // 14.2 break; } } for (int i = 0; i < 10; (i+=42)) { i++; // 14.2 } for (int i = 0; i < 10; (i|=y)) { i++; // 14.2 } return 0; } struct { unsigned int x:1; unsigned int y:1; } r14_4_struct; void misra_14_4(bool b) { if (x+4){} // 14.4 else {} if (b) {} else {} if (r14_4_struct.x) {} } void misra_15_1() { goto a1; // 15.1 a1: } void misra_15_2() { label: goto label; // 15.2 15.1 } void misra_15_3() { if (x!=0) { goto L1; // 15.3 15.1 if (y!=0) { L1: } else {} } else {} switch (x) { case 0: if (x == y) { goto L2; // 15.3 15.1 } goto L2; // 15.3 15.1 L3: foo(); if (a == 0x42) { // Compliant: goto L3; // 15.1 15.2 } break; case 1: y = x; L2: ++x; break; default: break; } } int misra_15_5() { if (x!=0) { return 1; // 15.5 } else {} return 2; } void misra_15_6() { if (x!=0); // 15.6 else{} #if A>1 // no-warning (void)0; #endif #if A > 0x42 if (true) { (void)0; } if (true) #endif { (void)0; } // no-warning do {} while (x<0); // no-warning } void misra_15_7() { uint32_t var = 0; uint32_t var2 = 0; if (x!=0){} // no-warning if (x!=0){} else if(x==1){} // 15.7 if (x!=0){} else if(x==1){}else{;} // no-warning if (x!=0) { } else { var = 5u; if (var != 5u) { var2 = 10u; } // no-warning } if (a==2) {} else if (b==4) {} // 15.7 if (a==2) {} else { if (b==4) {} } // no-warning } void misra_16_2() { switch (x) { default: break; case 1: while (y>4) { case 2: break; // 16.2 } break; } } void misra_16_3() { switch (x) { case 1: case 2: a=1; case 3: // 16.3 a=2; // fallthrough case 5: break; case 7: a=3; [[fallthrough]]; case 8: a=4; break; case 9: if (a==b) { break; } case 10: // 16.3 return; // 15.5 case 11: { break; } case 12: default: break; } switch (x) { case 1: // comment 1 { a = 1; break; } case 2: // comment 2 { a = 2; break; } default: { break; } } switch (x) { case 1: break; default: // 16.5 x++; case 19: // 16.3 break; case 20: x + 2; x + 3; break; } switch (x) { // 16.6 default:; } // 16.3 switch (x) { default:; } // 16.3 16.6 switch (x) { case 20: x + 2; x + 3; break; case 21: x + 2; x + 3; break; default: ; } // 16.3 switch (x) { // 16.4 16.6 case 1: x++; break; case 2: x++; } // 16.3 } void misra_16_4() { switch (x) { // 16.4 case 1: break; case 2: break; } } void misra_16_5() { switch (x) { case 1: break; default: // 16.5 break; case 2: break; } } void misra_16_6() { switch (x) { // 16.6 default: break; } switch (x) { case 1: break; case 2: break; default: break; } // No 16 6 in this switch: switch (x) { case A: return 1; // 15.5 case B: return 1; // 15.5 case C: return 1; // 15.5 default: return 2; // 15.5 } } void misra_16_7() { switch (x != 123) { // 16.7 case 1: break; default: break; } } void misra_17_1() { va_list(); // 17.1 va_arg(); // 17.1 va_start(); // 17.1 va_end(); // 17.1 va_copy(); // 17.1 } void misra_17_2_ok_1(void) { ; } void misra_17_2_ok_2(void) { misra_17_2_ok_1(); // no-warning } void misra_17_2_1(void) { misra_17_2_ok_1(); // no-warning misra_17_2_1(); // 17.2 misra_17_2_ok_2(); // no-warning misra_17_2_1(); // 17.2 } void misra_17_2_2(void) { misra_17_2_3(); // 17.2 } void misra_17_2_3(void) { misra_17_2_4(); // 17.2 } void misra_17_2_4(void) { misra_17_2_2(); // 17.2 misra_17_2_3(); // 17.2 } void misra_17_2_5(void) { misra_17_2_ok_1(); // no-warning misra_17_2_5(); // 17.2 misra_17_2_1(); // no-warning } void misra_17_6(int x[static 20]) {(void)x;} // 17.6 int calculation(int x) { return x + 1; } void misra_17_7(void) { calculation(123); // 17.7 } void misra_17_8(int x) { x = 3; // 17.8 } void misra_18_4() { int b = 42; int *bp = &b; bp += 1; // 18.4 bp -= 2; // 18.4 int *p = bp - 2; // 18.4 int *ab = &b + 1; // 18.4 p = bp + p; // 18.4 bp = 1 + p + 1; // 18.4 b += 19; // no-warning b = b + 9; // no-warning } void misra_18_5() { int *** p; // 18.5 } struct { uint16_t len; struct { uint8_t data_1[]; // 18.7 } nested_1; struct named { struct { uint8_t len_1; uint32_t data_2[]; // 18.7 } nested_2; uint8_t data_3[]; // 18.7 } nested_3; } r18_7_struct; struct { uint16_t len; uint8_t data_1[ 19 ]; uint8_t data_2[ ]; // 18.7 } r18_7_struct; void misra_18_8(int x) { int buf1[10]; int buf2[sizeof(int)]; int vla[x]; // 18.8 static const unsigned char arr18_8_1[] = UNDEFINED_ID; } union misra_19_2 { }; // 19.2 #include "notfound.h" // 20.1 #define int short // 20.4 #define inline "foo" // no warning in C90 standard #undef X // 20.5 #define M_20_7_1(A) (A+1) // 20.7 #define M_20_7_2(A,B) (1+AB+2) // no warning #define M_20_7_3(A) ((A)+A) // 20.7 #define M_20_7_4(A) x##A // 20.10 this test was written to see there are not FPs #define M_20_7_5(A,B) f(A, B) // no warning #define M_20_7_6(x) a ## x = ( x ) // 20.10 #define M_20_7_7(x) a = # x // 20.10 #define M_20_7_8(x, fn) a = fn ( # x ) // 20.7 20.10 #define M_20_7_9(x, fn) a = (fn) ( # x ) // 20.10 #define M_20_7_10(A, B) (A " " B) #define M_20_7_11(A, B, C) (A " " B " " C) #define M_20_7_12(A, B, C) (A " " B + C) // 20.7 #define M_20_7_13(A, B, C) (A + B " " C) // 20.7 // Compliant: M is a structure member name, not an expression struct { int a; } struct_20_7_s; #define M_20_7_6(M) struct_20_7.M #define M_20_7_7(M) (struct_20_7).M #define MUL(a ,b ) ( a * b ) // 20.7 #define M_20_10(a) (#a) // 20.10 #else1 // 20.13 #ifdef A>1 # define somethingis 5 // no warning # define func_20_13(v) (v) // no warning #else # definesomethingis 6 // 20.13 # def fun_2013(v) () // 20.13 #endif #define _Incompatible 0xdeadbeef // 21.1 #define __Incompatible 0xdeadbeef // 21.1 #define __starts_with_lower 0xdeadbeef // 21.1 #define __MY_HEADER_ // 21.1 #define _macro_starts_with_lower 1 // no warning static int _file_scope_id_21_1 = 42; // no warning static int _file_scope_id_21_1_fn() { return 42; } // no warning int misra_21_1() { int _a = 42; // no warning: only directives affected errno = EINVAL; // no warning _a ++; // no warning _exit(1); // no warning return _a; // no warning } static int _misra_21_1_2(); // no warning #define errno 11 // 21.1 void misra_21_3() { p1=malloc(10); // 21.3 p2=calloc(10); // 21.3 realloc(10); // 21.3 free(p1); // 21.3 } void misra_21_7() { (void)atof(str); // 21.7 (void)atoi(str); // 21.7 (void)atol(str); // 21.7 (void)atoll(str); // 21.7 } void misra_21_8() { abort(); // 21.8 (void)getenv("foo"); // 21.8 (void)system(""); // 21.8 exit(-1); // 21.8 } void misra_21_9() { (void)bsearch(key,base,num,size,cmp); // 21.9 qsort(base,num,size,cmp); // 21.9 } void misra_21_12() { int rc; fexcept_t f; // 21.12 rc = feclearexcept(1); // 21.12 rc = fegetexceptflag(&f, 1); // 21.12 rc = feraiseexcept(1); // 21.12 rc = fesetexceptflag(&f, 1); // 21.12 rc = fetestexcept(1); // 21.12 } // Large arrays for R13.1. Size exceeds default Python's max recursion depth. static uint8_t misra_13_1_large_ok[1024] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; static uint8_t misra_13_1_large_bad[1024] = { // 13.1 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 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