typedef unsigned char u8; typedef struct {} empty_s; struct contains_empty { u8 a; empty_s empty; u8 b; }; struct contains_empty ce = { { (1) }, (empty_s){}, 022, }; /* The following decl of 'q' would demonstrate the TCC bug in init_putv when handling copying compound literals. (Compound literals aren't acceptable constant initializers in isoc99, but we accept them like gcc, except for this case) //char *q = (char *){ "trara" }; */ struct SS {u8 a[3], b; }; struct SS sinit16[] = { { 1 }, 2 }; struct S { u8 a,b; u8 c[2]; }; struct T { u8 s[16]; u8 a; }; struct U { u8 a; struct S s; u8 b; struct T t; }; struct V { struct S s; struct T t; u8 a; }; struct W { struct V t; struct S s[]; }; struct S gs = ((struct S){1, 2, 3, 4}); struct S gs2 = {1, 2, {3, 4}}; struct T gt = {"hello", 42}; struct U gu = {3, 5,6,7,8, 4, "huhu", 43}; struct U gu2 = {3, {5,6,7,8}, 4, {"huhu", 43}}; /* Optional braces around scalar initializers. Accepted, but with a warning. */ struct U gu3 = { {3}, {5,6,7,8,}, 4, {"huhu", 43}}; /* Many superfluous braces and leaving out one initializer for U.s.c[1] */ struct U gu4 = { 3, {5,6,7,}, 5, { "bla", {44}} }; /* Superfluous braces and useless parens around values */ struct S gs3 = { (1), {(2)}, {(((3))), {4}}}; /* Superfluous braces, and leaving out braces for V.t, plus cast */ struct V gv = {{{3},4,{5,6}}, "haha", (u8)45, 46}; /* Compound literal */ struct V gv2 = {(struct S){7,8,{9,10}}, {"hihi", 47}, 48}; /* Parens around compound literal */ struct V gv3 = {((struct S){7,8,{9,10}}), {"hoho", 49}, 50}; /* Initialization of a flex array member (warns in GCC) */ struct W gw = {{1,2,3,4}, {1,2,3,4,5}}; union UU { u8 a; u8 b; }; struct SU { union UU u; u8 c; }; struct SU gsu = {5,6}; /* Unnamed struct/union members aren't ISO C, but it's a widely accepted extension. See below for further extensions to that under -fms-extension.*/ union UV { struct {u8 a,b;}; struct S s; }; union UV guv = {{6,5}}; union UV guv2 = {{.b = 7, .a = 8}}; union UV guv3 = {.b = 8, .a = 7}; struct SSU { int y; struct { int x; }; }; struct SSU gssu1 = { .y = 5, .x = 3 }; struct SSU gssu2 = { 5, 3 }; /* Under -fms-extensions also the following is valid: union UV2 { struct Anon {u8 a,b;}; // unnamed member, but tagged struct, ... struct S s; }; struct Anon gan = { 10, 11 }; // ... which makes it available here. union UV2 guv4 = {{4,3}}; // and the other inits from above as well */ struct in6_addr { union { u8 u6_addr8[16]; unsigned short u6_addr16[8]; } u; }; struct flowi6 { struct in6_addr saddr, daddr; }; struct pkthdr { struct in6_addr daddr, saddr; }; struct pkthdr phdr = { { { 6,5,4,3 } }, { { 9,8,7,6 } } }; struct Wrap { void *func; }; int global; void inc_global (void) { global++; } struct Wrap global_wrap[] = { ((struct Wrap) {inc_global}), inc_global, }; #include void print_ (const char *name, const u8 *p, long size) { printf ("%s:", name); while (size--) { printf (" %x", *p++); } printf ("\n"); } #define print(x) print_(#x, (u8*)&x, sizeof (x)) #if 1 void foo (struct W *w, struct pkthdr *phdr_) { struct S ls = {1, 2, 3, 4}; struct S ls2 = {1, 2, {3, 4}}; struct T lt = {"hello", 42}; struct U lu = {3, 5,6,7,8, 4, "huhu", 43}; struct U lu1 = {3, ls, 4, {"huhu", 43}}; struct U lu2 = {3, (ls), 4, {"huhu", 43}}; const struct S *pls = &ls; struct S ls21 = *pls; struct U lu22 = {3, *pls, 4, {"huhu", 43}}; /* Incomplete bracing. */ struct U lu21 = {3, ls, 4, "huhu", 43}; /* Optional braces around scalar initializers. Accepted, but with a warning. */ struct U lu3 = { 3, {5,6,7,8,}, 4, {"huhu", 43}}; /* Many superfluous braces and leaving out one initializer for U.s.c[1] */ struct U lu4 = { 3, {5,6,7,}, 5, { "bla", 44} }; /* Superfluous braces and useless parens around values */ struct S ls3 = { (1), (2), {(((3))), 4}}; /* Superfluous braces, and leaving out braces for V.t, plus cast */ struct V lv = {{3,4,{5,6}}, "haha", (u8)45, 46}; /* Compound literal */ struct V lv2 = {(struct S)w->t.s, {"hihi", 47}, 48}; /* Parens around compound literal */ struct V lv3 = {((struct S){7,8,{9,10}}), ((const struct W *)w)->t.t, 50}; const struct pkthdr *phdr = phdr_; struct flowi6 flow = { .daddr = phdr->daddr, .saddr = phdr->saddr }; int elt = 0x42; /* Range init, overlapping */ struct T lt2 = { { [1 ... 5] = 9, [6 ... 10] = elt, [4 ... 7] = elt+1 }, 1 }; struct SSU lssu1 = { 5, 3 }; struct SSU lssu2 = { .y = 5, .x = 3 }; /* designated initializers in GNU form */ #if defined(__GNUC__) || defined(__TINYC__) struct S ls4 = {a: 1, b: 2, c: {3, 4}}; #else struct S ls4 = {.a = 1, .b = 2, .c = {3, 4}}; #endif print(ls); print(ls2); print(lt); print(lu); print(lu1); print(lu2); print(ls21); print(lu21); print(lu22); print(lu3); print(lu4); print(ls3); print(lv); print(lv2); print(lv3); print(lt2); print(lssu1); print(lssu2); print(flow); print(ls4); } #endif void test_compound_with_relocs (void) { struct Wrap local_wrap[] = { ((struct Wrap) {inc_global}), inc_global, }; void (*p)(void); p = global_wrap[0].func; p(); p = global_wrap[1].func; p(); p = local_wrap[0].func; p(); p = local_wrap[1].func; p(); } void sys_ni(void) { printf("ni\n"); } void sys_one(void) { printf("one\n"); } void sys_two(void) { printf("two\n"); } void sys_three(void) { printf("three\n"); } void sys_four(void) { printf("four\n"); } typedef void (*fptr)(void); #define array_size(a) (sizeof a / sizeof a[0]) void test_multi_relocs(void) { int i; static const fptr tabl1[4] = { [0 ... 3] = &sys_ni, [0] = sys_one, [1] = sys_two, [2] = sys_three, sys_four, [1 ... 2] = &sys_ni, [1] = 0, }; for (i = 0; i < array_size(tabl1); i++) if (tabl1[i]) tabl1[i](); else printf("(0)\n"); const fptr tabl2[4] = { [0 ... 3] = &sys_ni, [0] = sys_one, [1] = sys_two, [2] = sys_three, sys_four, [1 ... 2] = &sys_ni, [1] = 0, }; for (i = 0; i < array_size(tabl2); i++) if (tabl2[i]) tabl2[i](); else printf("(0)\n"); int c = 0; int dd[] = { [0 ... 1] = ++c, [2 ... 3] = ++c }; for (i = 0; i < array_size(dd); i++) printf(" %d", dd[i]); printf("\n"); /* multi-dimensional flex array with range initializers */ static char m1[][2][3] = {[0 ... 2]={{3,4,5},{6,7,8}},{{9},10},"abc"}; char m2[][2][3] = {[0 ... 2]={{3,4,5},{6,7,8}},{{9},10},"abc"}; int g, j, k; for (g = 2; g-- > 0;) { printf("mdfa %s: %d -", "locl\0glob" + g * 5, sizeof m1); for (i = 0; i < array_size(m1); i++) for (j = 0; j < array_size(m1[0]); j++) for (k = 0; k < array_size(m1[0][0]); k++) printf(" %d", (g ? m1:m2)[i][j][k]); printf("\n"); } } void test_init_ranges(void) { int i,c=0; static void *gostring[] = { [0 ... 31] = &&l_bad, [127] = &&l_bad, [32 ... 126] = &&l_loop, ['\\'] = &&l_esc, ['"'] = &&l_qdown, [128 ... 191] = &&l_bad, [192 ... 223] = &&l_utf8_2, [224 ... 239] = &&l_utf8_3, [240 ... 247] = &&l_utf8_4, [248 ... 255] = &&l_bad }; for (i = 0; i < 256; i++) { goto *gostring[i]; l_bad: c++; l_loop: c++; l_esc: c++; l_qdown: c++; l_utf8_2: c++; l_utf8_3: c++; l_utf8_4: c++; } printf ("%d\n", c); } /* Following is from GCC gcc.c-torture/execute/20050613-1.c. */ struct SEA { int i; int j; int k; int l; }; struct SEB { struct SEA a; int r[1]; }; struct SEC { struct SEA a; int r[0]; }; struct SED { struct SEA a; int r[]; }; static void test_correct_filling (struct SEA *x) { static int i; if (x->i != 0 || x->j != 5 || x->k != 0 || x->l != 0) printf("sea_fill%d: wrong\n", i); else printf("sea_fill%d: okay\n", i); i++; } int test_zero_init (void) { /* The peculiarity here is that only a.j is initialized. That means that all other members must be zero initialized. TCC once didn't do that for sub-level designators. */ struct SEB b = { .a.j = 5 }; struct SEC c = { .a.j = 5 }; struct SED d = { .a.j = 5 }; test_correct_filling (&b.a); test_correct_filling (&c.a); test_correct_filling (&d.a); return 0; } void test_init_struct_from_struct(void) { int i = 0; struct S {int x,y;} a = {1,2}, b = {3,4}, c[] = {a,b}, d[] = {++i, ++i, ++i, ++i}, e[] = {b, (struct S){5,6}} ; printf("%s: %d %d %d %d - %d %d %d %d - %d %d %d %d\n", __FUNCTION__, c[0].x, c[0].y, c[1].x, c[1].y, d[0].x, d[0].y, d[1].x, d[1].y, e[0].x, e[0].y, e[1].x, e[1].y ); } typedef struct { unsigned int a; unsigned int : 32; unsigned int b; unsigned long long : 64; unsigned int c; } tst_bf; tst_bf arr[] = { { 1, 2, 3 } }; void test_init_bf(void) { printf ("%s: %d %d %d\n", __FUNCTION__, arr[0].a, arr[0].b, arr[0].c); } int main() { print(ce); print(gs); print(gs2); print(gt); print(gu); print(gu2); print(gu3); print(gu4); print(gs3); print(gv); print(gv2); print(gv3); print(sinit16); print(gw); print(gsu); print(guv); print(guv.b); print(guv2); print(guv3); print(gssu1); print(gssu2); print(phdr); foo(&gw, &phdr); //printf("q: %s\n", q); test_compound_with_relocs(); test_multi_relocs(); test_zero_init(); test_init_ranges(); test_init_struct_from_struct(); test_init_bf(); return 0; }