forked from OSchip/llvm-project
76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify %s -Wimplicit-int-conversion -Wno-unused -triple x86_64-gnu-linux
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typedef _ExtInt(31) EI31;
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void Ternary(_ExtInt(30) s30, EI31 s31a, _ExtInt(31) s31b,
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_ExtInt(32) s32, int b) {
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b ? s30 : s31a;
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b ? s31a : s30;
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b ? s32 : 0;
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(void)(b ? s31a : s31b);
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(void)(s30 ? s31a : s31b);
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}
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struct CursedBitField {
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_ExtInt(4) A : 8; // expected-error {{width of bit-field 'A' (8 bits) exceeds the width of its type (4 bits)}}
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};
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#define EXPR_HAS_TYPE(EXPR, TYPE) _Generic((EXPR), default : 0, TYPE : 1)
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void Ops(void) {
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_ExtInt(4) x4_s = 1;
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_ExtInt(32) x32_s = 1;
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_ExtInt(43) x43_s = 1;
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unsigned _ExtInt(4) x4_u = 1;
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unsigned _ExtInt(43) x43_u = 1;
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unsigned _ExtInt(32) x32_u = 1;
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int x_int = 1;
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unsigned x_uint = 1;
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// Same size/sign ops don't change type.
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_Static_assert(EXPR_HAS_TYPE(x43_s + x43_s, _ExtInt(43)), "");
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_Static_assert(EXPR_HAS_TYPE(x4_s - x4_s, _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(x43_u * x43_u, unsigned _ExtInt(43)), "");
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_Static_assert(EXPR_HAS_TYPE(x4_u / x4_u, unsigned _ExtInt(4)), "");
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// Unary ops shouldn't go through integer promotions.
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_Static_assert(EXPR_HAS_TYPE(x4_s++, _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(++x4_s, _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(x4_u++, unsigned _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(++x4_u, unsigned _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(+x4_s, _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(-x4_s, _ExtInt(4)), "");
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_Static_assert(EXPR_HAS_TYPE(~x4_u, unsigned _ExtInt(4)), "");
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// This one really does convert to a different result type though.
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_Static_assert(EXPR_HAS_TYPE(!x4_u, int), "");
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// Test binary ops pick the correct common type.
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_Static_assert(EXPR_HAS_TYPE(x43_s + x_int, _ExtInt(43)), "");
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_Static_assert(EXPR_HAS_TYPE(x43_u + x_int, unsigned _ExtInt(43)), "");
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_Static_assert(EXPR_HAS_TYPE(x32_s + x_int, int), "");
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_Static_assert(EXPR_HAS_TYPE(x32_u + x_int, unsigned int), "");
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_Static_assert(EXPR_HAS_TYPE(x32_s + x_uint, unsigned int), "");
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_Static_assert(EXPR_HAS_TYPE(x32_u + x_uint, unsigned int), "");
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_Static_assert(EXPR_HAS_TYPE(x4_s + x_int, int), "");
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_Static_assert(EXPR_HAS_TYPE(x4_u + x_int, int), "");
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_Static_assert(EXPR_HAS_TYPE(x4_s + x_uint, unsigned int), "");
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_Static_assert(EXPR_HAS_TYPE(x4_u + x_uint, unsigned int), "");
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}
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void FromPaper1(void) {
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// Test the examples of conversion and promotion rules from C2x 6.3.1.8.
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_ExtInt(2) a2 = 1;
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_ExtInt(3) a3 = 2;
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_ExtInt(33) a33 = 1;
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char c = 3;
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_Static_assert(EXPR_HAS_TYPE(a2 * a3, _ExtInt(3)), "");
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_Static_assert(EXPR_HAS_TYPE(a2 * c, int), "");
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_Static_assert(EXPR_HAS_TYPE(a33 * c, _ExtInt(33)), "");
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}
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void FromPaper2(_ExtInt(8) a1, _ExtInt(24) a2) {
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_Static_assert(EXPR_HAS_TYPE(a1 * (_ExtInt(32))a2, _ExtInt(32)), "");
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}
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