зеркало из https://github.com/microsoft/clang-1.git
124 строки
4.1 KiB
C
124 строки
4.1 KiB
C
// RUN: %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s
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#define M1(x) x
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#define M2 1;
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void foo() {
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M1(
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M2);
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// CHECK: :7:{{[0-9]+}}: warning: expression result unused
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// CHECK: :4:{{[0-9]+}}: note: instantiated from:
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// CHECK: :3:{{[0-9]+}}: note: instantiated from:
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}
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#define A 1
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#define B A
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#define C B
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void bar() {
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C;
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// CHECK: :17:3: warning: expression result unused
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// CHECK: :15:11: note: instantiated from:
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// CHECK: :14:11: note: instantiated from:
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// CHECK: :13:11: note: instantiated from:
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}
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// rdar://7597492
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#define sprintf(str, A, B) \
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__builtin___sprintf_chk (str, 0, 42, A, B)
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void baz(char *Msg) {
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sprintf(Msg, " sizeof FoooLib : =%3u\n", 12LL);
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}
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// PR9279: comprehensive tests for multi-level macro back traces
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#define macro_args1(x) x
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#define macro_args2(x) macro_args1(x)
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#define macro_args3(x) macro_args2(x)
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#define macro_many_args1(x, y, z) y
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#define macro_many_args2(x, y, z) macro_many_args1(x, y, z)
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#define macro_many_args3(x, y, z) macro_many_args2(x, y, z)
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void test() {
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macro_args3(1);
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// CHECK: {{.*}}:43:15: warning: expression result unused
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// Also check that the 'caret' printing agrees with the location here where
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// its easy to FileCheck.
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// CHECK-NEXT: macro_args3(1);
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// CHECK-NEXT: ~~~~~~~~~~~~^~
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// CHECK: {{.*}}:36:36: note: instantiated from:
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// CHECK: {{.*}}:35:36: note: instantiated from:
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// CHECK: {{.*}}:34:24: note: instantiated from:
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macro_many_args3(
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1,
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2,
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3);
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// CHECK: {{.*}}:55:5: warning: expression result unused
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// CHECK: {{.*}}:40:55: note: instantiated from:
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// CHECK: {{.*}}:39:55: note: instantiated from:
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// CHECK: {{.*}}:38:35: note: instantiated from:
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macro_many_args3(
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1,
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M2,
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3);
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// CHECK: {{.*}}:64:5: warning: expression result unused
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// CHECK: {{.*}}:4:12: note: instantiated from:
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// CHECK: {{.*}}:40:55: note: instantiated from:
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// CHECK: {{.*}}:39:55: note: instantiated from:
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// CHECK: {{.*}}:38:35: note: instantiated from:
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macro_many_args3(
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1,
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macro_args2(2),
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3);
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// CHECK: {{.*}}:74:17: warning: expression result unused
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// This caret location needs to be printed *inside* a different macro's
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// arguments.
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// CHECK-NEXT: macro_args2(2),
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// CHECK-NEXT: ~~~~~~~~~~~~^~~
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// CHECK: {{.*}}:35:36: note: instantiated from:
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// CHECK: {{.*}}:34:24: note: instantiated from:
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// CHECK: {{.*}}:40:55: note: instantiated from:
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// CHECK: {{.*}}:39:55: note: instantiated from:
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// CHECK: {{.*}}:38:35: note: instantiated from:
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}
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#define variadic_args1(x, y, ...) y
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#define variadic_args2(x, ...) variadic_args1(x, __VA_ARGS__)
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#define variadic_args3(x, y, ...) variadic_args2(x, y, __VA_ARGS__)
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void test2() {
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variadic_args3(1, 2, 3, 4);
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// CHECK: {{.*}}:93:21: warning: expression result unused
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// CHECK-NEXT: variadic_args3(1, 2, 3, 4);
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// CHECK-NEXT: ~~~~~~~~~~~~~~~~~~^~~~~~~~
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// CHECK: {{.*}}:90:53: note: instantiated from:
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// CHECK: {{.*}}:89:50: note: instantiated from:
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// CHECK: {{.*}}:88:35: note: instantiated from:
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}
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#define variadic_pasting_args1(x, y, z) y
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#define variadic_pasting_args2(x, ...) variadic_pasting_args1(x ## __VA_ARGS__)
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#define variadic_pasting_args2a(x, y, ...) variadic_pasting_args1(x, y ## __VA_ARGS__)
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#define variadic_pasting_args3(x, y, ...) variadic_pasting_args2(x, y, __VA_ARGS__)
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#define variadic_pasting_args3a(x, y, ...) variadic_pasting_args2a(x, y, __VA_ARGS__)
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void test3() {
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variadic_pasting_args3(1, 2, 3, 4);
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// CHECK: {{.*}}:109:32: warning: expression result unused
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// CHECK: {{.*}}:105:72: note: instantiated from:
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// CHECK: {{.*}}:103:68: note: instantiated from:
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// CHECK: {{.*}}:102:41: note: instantiated from:
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variadic_pasting_args3a(1, 2, 3, 4);
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// FIXME: It'd be really nice to retain the start location of the first token
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// involved in the token paste instead of falling back on the full macro
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// location in the first two locations here.
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// CHECK: {{.*}}:115:3: warning: expression result unused
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// CHECK: {{.*}}:106:44: note: instantiated from:
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// CHECK: {{.*}}:104:72: note: instantiated from:
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// CHECK: {{.*}}:102:41: note: instantiated from:
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}
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