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b931e65811
Fixes #1267 Avoid ICE, but treat plain int bit-fields declared via typedef as signed rather than unsigned. It is more efficient to treat them as unsigned, but this requires distinguishing int from signed int, and this is curently not done.
100 lines
1.9 KiB
C
100 lines
1.9 KiB
C
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/* bug #1094 - Nested struct/union initializers don't compile */
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdint.h>
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typedef uint16_t u16;
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typedef uint8_t u8;
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struct WW {
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int a : 4;
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struct {
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unsigned int b : 4;
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unsigned int c : 8;
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} x[2];
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} wwqq = { 0, {2, 5, {3, 4}}, };
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typedef struct {
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u16 quot;
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u16 rem;
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} udiv_t;
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typedef struct {
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u16 quot;
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u16 rem;
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char m[8];
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} big_t;
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union U {
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struct {
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signed int a : 3;
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signed int b : 3;
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signed int c : 3;
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};
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int u;
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};
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union U g = { 5, 3, 1 };
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struct S {
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struct {
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unsigned int a : 3;
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unsigned int b : 3;
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unsigned int c : 3;
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};
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};
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struct S h = { 5, 3, 1 };
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union X {
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struct {
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uint16_t a : 3;
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union {
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struct {
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uint16_t b : 3;
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uint16_t c : 3;
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};
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uint16_t d;
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};
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};
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uint16_t e;
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} x = { 4, {5, 6} };
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udiv_t div3(udiv_t u)
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{
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udiv_t v = {};
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u.quot = 341 + u.quot;
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u.rem = 1 + u.rem;
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v = u;
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return v;
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}
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int main(void)
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{
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udiv_t v = { 141, 32 };
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big_t b = { 141, 32 };
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v = div3(*(udiv_t*)&b);
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printf("%d %d %d\n", (int)wwqq.a, wwqq.x[0].b, wwqq.x[0].c);
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printf("%d %d %d\n", (int)wwqq.a, wwqq.x[1].b, wwqq.x[1].c);
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printf("quot = %u, rem = %u\n", div3(v).quot, div3(v).rem);
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printf("quot = %u, rem = %u\n", v.quot, v.rem);
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printf("quot = %u, rem = %u\n", b.quot, b.rem);
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printf("g.a = %u, g.b = %u, g.c = %d\n", g.a, g.b, g.c);
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x.e = 1467;
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printf("x.a = %d, x.b = %d, x.c = %d\n", x.a, x.b, x.c);
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printf("(long)x.b = %ld, sizeof(x) = %u, sizeof((long)x.a) = %u\n", (long)x.b, sizeof(x), sizeof((long)x.a));
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printf("-x.d = %d, (long)(-x.c + 1) = %ld\n", -x.d, (long)(-x.c + 1));
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printf("h.a = %u, h.b = %u, h.c = %u\n", h.a, h.b, h.c);
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return 0;
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}
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