derek.holloway
7502bf64a4
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67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
// RUN: %clang_cc1 -verify=expected,all -triple x86_64-unknown-linux-gnu -fsyntax-only -std=c23 %s -Wpre-c23-compat
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// RUN: %clang_cc1 -verify=pedantic,all -triple x86_64-unknown-linux-gnu -fsyntax-only -std=c17 %s -pedantic
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#include <limits.h>
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#define GET_TYPE_INT(x) _Generic(x, \
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char: 1,\
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unsigned char: 2,\
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signed char: 3,\
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short: 4,\
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unsigned short: 5,\
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int: 6,\
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unsigned int: 7,\
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long: 8,\
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unsigned long: 9,\
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long long: 10,\
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unsigned long long: 11,\
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default: 0xFF\
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)\
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enum x {
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a = INT_MAX,
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b = ULLONG_MAX, // expected-warning {{enumerator value which exceeds the range of 'int' is incompatible with C standards before C23}}
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// pedantic-warning@-1 {{enumerator value which exceeds the range of 'int' is a C23 extension}}
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a_type = GET_TYPE_INT(a),
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b_type = GET_TYPE_INT(b)
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};
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_Static_assert(GET_TYPE_INT(a) == GET_TYPE_INT(b), "ok");
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extern enum x e_a;
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extern __typeof(b) e_a;
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extern __typeof(a) e_a;
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enum a {
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a0 = 0xFFFFFFFFFFFFFFFFULL // expected-warning {{enumerator value which exceeds the range of 'int' is incompatible with C standards before C23}}
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// pedantic-warning@-1 {{enumerator value which exceeds the range of 'int' is a C23 extension}}
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};
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_Bool e (void) {
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return a0;
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}
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int f (void) {
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return a0; // expected-warning {{implicit conversion from 'enum a' to 'int' changes value from 18446744073709551615 to -1}}
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// pedantic-warning@-1 {{implicit conversion from 'unsigned long' to 'int' changes value from 18446744073709551615 to -1}}
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}
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unsigned long g (void) {
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return a0;
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}
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unsigned long long h (void) {
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return a0;
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}
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enum big_enum {
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big_enum_a = LONG_MAX, // expected-warning {{enumerator value which exceeds the range of 'int' is incompatible with C standards before C23}}
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// pedantic-warning@-1 {{enumerator value which exceeds the range of 'int' is a C23 extension}}
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big_enum_b = a + 1, // expected-warning {{enumerator value which exceeds the range of 'int' is incompatible with C standards before C23}}
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// pedantic-warning@-1 {{enumerator value which exceeds the range of 'int' is a C23 extension}}
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big_enum_c = ULLONG_MAX // expected-warning {{enumerator value which exceeds the range of 'int' is incompatible with C standards before C23}}
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// pedantic-warning@-1 {{enumerator value which exceeds the range of 'int' is a C23 extension}}
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};
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_Static_assert(GET_TYPE_INT(big_enum_a) == GET_TYPE_INT(big_enum_b), "ok");
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