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// RUN: %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s
#define M1(x) x
#define M2 1;
void foo() {
M1(
M2);
// CHECK: :7:{{[0-9]+}}: warning: expression result unused
// CHECK: :4:{{[0-9]+}}: note: instantiated from:
// CHECK: :3:{{[0-9]+}}: note: instantiated from:
}
#define A 1
#define B A
#define C B
void bar() {
C;
// CHECK: :17:3: warning: expression result unused
// CHECK: :15:11: note: instantiated from:
// CHECK: :14:11: note: instantiated from:
// CHECK: :13:11: note: instantiated from:
}
// rdar://7597492
#define sprintf(str, A, B) \
__builtin___sprintf_chk (str, 0, 42, A, B)
void baz(char *Msg) {
sprintf(Msg, " sizeof FoooLib : =%3u\n", 12LL);
}
// PR9279: comprehensive tests for multi-level macro back traces
#define macro_args1(x) x
#define macro_args2(x) macro_args1(x)
#define macro_args3(x) macro_args2(x)
#define macro_many_args1(x, y, z) y
#define macro_many_args2(x, y, z) macro_many_args1(x, y, z)
#define macro_many_args3(x, y, z) macro_many_args2(x, y, z)
void test() {
macro_args3(1);
// CHECK: {{.*}}:43:15: warning: expression result unused
// Also check that the 'caret' printing agrees with the location here where
// its easy to FileCheck.
// CHECK-NEXT: macro_args3(1);
// CHECK-NEXT: ~~~~~~~~~~~~^~
// CHECK: {{.*}}:36:36: note: instantiated from:
// CHECK: {{.*}}:35:36: note: instantiated from:
// CHECK: {{.*}}:34:24: note: instantiated from:
macro_many_args3(
1,
2,
3);
// CHECK: {{.*}}:55:5: warning: expression result unused
// CHECK: {{.*}}:40:55: note: instantiated from:
// CHECK: {{.*}}:39:55: note: instantiated from:
// CHECK: {{.*}}:38:35: note: instantiated from:
macro_many_args3(
1,
M2,
3);
// CHECK: {{.*}}:64:5: warning: expression result unused
// CHECK: {{.*}}:4:12: note: instantiated from:
// CHECK: {{.*}}:40:55: note: instantiated from:
// CHECK: {{.*}}:39:55: note: instantiated from:
// CHECK: {{.*}}:38:35: note: instantiated from:
macro_many_args3(
1,
macro_args2(2),
3);
// CHECK: {{.*}}:74:17: warning: expression result unused
// This caret location needs to be printed *inside* a different macro's
// arguments.
// CHECK-NEXT: macro_args2(2),
// CHECK-NEXT: ~~~~~~~~~~~~^~~
// CHECK: {{.*}}:35:36: note: instantiated from:
// CHECK: {{.*}}:34:24: note: instantiated from:
// CHECK: {{.*}}:40:55: note: instantiated from:
// CHECK: {{.*}}:39:55: note: instantiated from:
// CHECK: {{.*}}:38:35: note: instantiated from:
}
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