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llvm-project/clang/test/Misc/caret-diags-macros.c

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// RUN: %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s -strict-whitespace
#define M1(x) x
#define M2 1;
void foo() {
M1(
M2);
// CHECK: {{.*}}:7:{{[0-9]+}}: warning: expression result unused
// CHECK: {{.*}}:4:{{[0-9]+}}: note: expanded from macro 'M2'
// CHECK: {{.*}}:3:{{[0-9]+}}: note: expanded from macro 'M1'
}
#define A(x) x
#define B(x) A(x)
#define C(x) B(x)
void bar() {
C(1);
// CHECK: {{.*}}:17:5: warning: expression result unused
}
// 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(11);
// CHECK: {{.*}}:40:15: warning: expression result unused
// Also check that the 'caret' printing agrees with the location here where
// its easy to FileCheck.
// CHECK-NEXT: macro_args3(11);
// CHECK-NEXT: {{^ \^~}}
macro_many_args3(
1,
2,
3);
// CHECK: {{.*}}:49:5: warning: expression result unused
// CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3'
// CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2'
// CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1'
macro_many_args3(
1,
M2,
3);
// CHECK: {{.*}}:58:5: warning: expression result unused
// CHECK: {{.*}}:4:12: note: expanded from macro 'M2'
// CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3'
// CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2'
// CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1'
macro_many_args3(
1,
macro_args2(22),
3);
// CHECK: {{.*}}:68:17: warning: expression result unused
// This caret location needs to be printed *inside* a different macro's
// arguments.
// CHECK-NEXT: macro_args2(22),
// CHECK-NEXT: {{^ \^~}}
// CHECK: {{.*}}:32:36: note: expanded from macro 'macro_args2'
// CHECK: {{.*}}:31:24: note: expanded from macro 'macro_args1'
// CHECK: {{.*}}:37:55: note: expanded from macro 'macro_many_args3'
// CHECK: {{.*}}:36:55: note: expanded from macro 'macro_many_args2'
// CHECK: {{.*}}:35:35: note: expanded from macro 'macro_many_args1'
}
#define variadic_args1(x, y, ...) y
#define variadic_args2(x, ...) variadic_args1(x, __VA_ARGS__)
#define variadic_args3(x, y, ...) variadic_args2(x, y, __VA_ARGS__)
void test2() {
variadic_args3(1, 22, 3, 4);
// CHECK: {{.*}}:87:21: warning: expression result unused
// CHECK-NEXT: variadic_args3(1, 22, 3, 4);
// CHECK-NEXT: {{^ \^~}}
// CHECK: {{.*}}:84:53: note: expanded from macro 'variadic_args3'
// CHECK: {{.*}}:83:50: note: expanded from macro 'variadic_args2'
// CHECK: {{.*}}:82:35: note: expanded from macro 'variadic_args1'
}
#define variadic_pasting_args1(x, y, z) y
#define variadic_pasting_args2(x, ...) variadic_pasting_args1(x ## __VA_ARGS__)
#define variadic_pasting_args2a(x, y, ...) variadic_pasting_args1(x, y ## __VA_ARGS__)
#define variadic_pasting_args3(x, y, ...) variadic_pasting_args2(x, y, __VA_ARGS__)
#define variadic_pasting_args3a(x, y, ...) variadic_pasting_args2a(x, y, __VA_ARGS__)
void test3() {
variadic_pasting_args3(1, 2, 3, 4);
// CHECK: {{.*}}:103:32: warning: expression result unused
// CHECK: {{.*}}:99:72: note: expanded from macro 'variadic_pasting_args3'
// CHECK: {{.*}}:97:68: note: expanded from macro 'variadic_pasting_args2'
// CHECK: {{.*}}:96:41: note: expanded from macro 'variadic_pasting_args1'
variadic_pasting_args3a(1, 2, 3, 4);
// CHECK: {{.*}}:109:3: warning: expression result unused
// CHECK-NEXT: variadic_pasting_args3a(1, 2, 3, 4);
// CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~~~~~~~~}}
// CHECK: {{.*}}:100:44: note: expanded from macro 'variadic_pasting_args3a'
// CHECK-NEXT: #define variadic_pasting_args3a(x, y, ...) variadic_pasting_args2a(x, y, __VA_ARGS__)
// CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~~~~~~~~}}
// CHECK: {{.*}}:98:70: note: expanded from macro 'variadic_pasting_args2a'
// CHECK-NEXT: #define variadic_pasting_args2a(x, y, ...) variadic_pasting_args1(x, y ## __VA_ARGS__)
// CHECK-NEXT: {{ \^~~~~~~~~~~~~~~~}}
// CHECK: {{.*}}:96:41: note: expanded from macro 'variadic_pasting_args1'
// CHECK-NEXT: #define variadic_pasting_args1(x, y, z) y
// CHECK-NEXT: {{ \^}}
}
#define BAD_CONDITIONAL_OPERATOR (2<3)?2:3
int test4 = BAD_CONDITIONAL_OPERATOR+BAD_CONDITIONAL_OPERATOR;
// CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR'
// CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3
// CHECK-NEXT: {{^ \^}}
// CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR'
// CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3
// CHECK-NEXT: {{^ \^}}
// CHECK: {{.*}}:124:39: note: expanded from macro 'BAD_CONDITIONAL_OPERATOR'
// CHECK-NEXT: #define BAD_CONDITIONAL_OPERATOR (2<3)?2:3
// CHECK-NEXT: {{^ ~~~~~\^~~~}}
#define QMARK ?
#define TWOL (2<
#define X 1+TWOL 3) QMARK 4:5
int x = X;
// CHECK: {{.*}}:139:9: note: place parentheses around the '+' expression to silence this warning
// CHECK-NEXT: int x = X;
// CHECK-NEXT: {{^ \^}}
// CHECK-NEXT: {{.*}}:138:21: note: expanded from macro 'X'
// CHECK-NEXT: #define X 1+TWOL 3) QMARK 4:5
// CHECK-NEXT: {{^ ~~~~~~~~~ \^}}
// CHECK-NEXT: {{.*}}:136:15: note: expanded from macro 'QMARK'
// CHECK-NEXT: #define QMARK ?
// CHECK-NEXT: {{^ \^}}
// CHECK-NEXT: {{.*}}:139:9: note: place parentheses around the '?:' expression to evaluate it first
// CHECK-NEXT: int x = X;
// CHECK-NEXT: {{^ \^}}
// CHECK-NEXT: {{.*}}:138:21: note: expanded from macro 'X'
// CHECK-NEXT: #define X 1+TWOL 3) QMARK 4:5
// CHECK-NEXT: {{^ ~~~~~~~~\^~~~~~~~~}}
#define ONEPLUS 1+
#define Y ONEPLUS (2<3) QMARK 4:5
int y = Y;
// CHECK: {{.*}}:158:9: warning: operator '?:' has lower precedence than '+'; '+' will be evaluated first
// CHECK-NEXT: int y = Y;
// CHECK-NEXT: {{^ \^}}
// CHECK-NEXT: {{.*}}:157:25: note: expanded from macro 'Y'
// CHECK-NEXT: #define Y ONEPLUS (2<3) QMARK 4:5
// CHECK-NEXT: {{^ ~~~~~~~~~~~~~ \^}}
// CHECK-NEXT: {{.*}}:136:15: note: expanded from macro 'QMARK'
// CHECK-NEXT: #define QMARK ?
// CHECK-NEXT: {{^ \^}}
// PR14399
void iequals(int,int,int);
void foo_aa(char* s)
{
#define /* */ BARC(c, /* */b, a) (a + b ? c : c)
iequals(__LINE__, BARC(123, (456 < 345), 789), 8);
}
// CHECK: {{.*}}:174:21: warning: operator '?:' has lower precedence than '+'
// CHECK-NEXT: iequals(__LINE__, BARC(123, (456 < 345), 789), 8);
// CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~~~~~~~~~~}}
// CHECK-NEXT: {{.*}}:173:41: note: expanded from macro 'BARC'
// CHECK-NEXT: #define /* */ BARC(c, /* */b, a) (a + b ? c : c)
// CHECK-NEXT: {{^ ~~~~~ \^}}
#define APPEND2(NUM, SUFF) -1 != NUM ## SUFF
#define APPEND(NUM, SUFF) APPEND2(NUM, SUFF)
#define UTARG_MAX_U APPEND (MAX_UINT, UL)
#define MAX_UINT 18446744073709551615
#if UTARG_MAX_U
#endif
// CHECK: {{.*}}:187:5: warning: left side of operator converted from negative value to unsigned: -1 to 18446744073709551615
// CHECK-NEXT: #if UTARG_MAX_U
// CHECK-NEXT: {{^ \^~~~~~~~~~~}}
// CHECK-NEXT: {{.*}}:185:21: note: expanded from macro 'UTARG_MAX_U'
// CHECK-NEXT: #define UTARG_MAX_U APPEND (MAX_UINT, UL)
// CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~~~~}}
// CHECK-NEXT: {{.*}}:184:27: note: expanded from macro 'APPEND'
// CHECK-NEXT: #define APPEND(NUM, SUFF) APPEND2(NUM, SUFF)
// CHECK-NEXT: {{^ \^~~~~~~~~~~~~~~~~~}}
// CHECK-NEXT: {{.*}}:183:31: note: expanded from macro 'APPEND2'
// CHECK-NEXT: #define APPEND2(NUM, SUFF) -1 != NUM ## SUFF
// CHECK-NEXT: {{^ ~~ \^ ~~~~~~~~~~~}}
unsigned long strlen_test(const char *s);
#define __darwin_obsz(object) __builtin_object_size (object, 1)
#define sprintf2(str, ...) \
__builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
#define Cstrlen(a) strlen_test(a)
#define Csprintf sprintf2
void f(char* pMsgBuf, char* pKeepBuf) {
Csprintf(pMsgBuf,"\nEnter minimum anagram length (2-%1d): ", strlen_test(pKeepBuf));
// FIXME: Change test to use 'Cstrlen' instead of 'strlen_test' when macro printing is fixed.
}
// CHECK: {{.*}}:210:62: warning: format specifies type 'int' but the argument has type 'unsigned long'
// CHECK-NEXT: Csprintf(pMsgBuf,"\nEnter minimum anagram length (2-%1d): ", strlen_test(pKeepBuf));
// CHECK-NEXT: {{^ ~~~ \^~~~~~~~~~~~~~~~~~~~~}}
// CHECK-NEXT: {{^ %1lu}}
// CHECK-NEXT: {{.*}}:208:21: note: expanded from macro 'Csprintf'
// CHECK-NEXT: #define Csprintf sprintf2
// CHECK-NEXT: {{^ \^}}
// CHECK-NEXT: {{.*}}:206:56: note: expanded from macro 'sprintf2'
// CHECK-NEXT: __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
// CHECK-NEXT: {{^ \^~~~~~~~~~~}}
#define SWAP_AND_APPLY(arg, macro) macro arg
#define APPLY(macro, arg) macro arg
#define DECLARE_HELPER() __builtin_printf("%d\n", mylong);
void use_evil_macros(long mylong) {
SWAP_AND_APPLY((), DECLARE_HELPER)
APPLY(DECLARE_HELPER, ())
}
// CHECK: {{.*}}:228:22: warning: format specifies type 'int' but the argument has type 'long'
// CHECK-NEXT: SWAP_AND_APPLY((), DECLARE_HELPER)
// CHECK-NEXT: ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
// CHECK-NEXT: {{.*}}:224:36: note: expanded from macro 'SWAP_AND_APPLY'
// CHECK-NEXT: #define SWAP_AND_APPLY(arg, macro) macro arg
// CHECK-NEXT: ^~~~~~~~~
// CHECK-NEXT: {{.*}}:226:51: note: expanded from macro 'DECLARE_HELPER'
// CHECK-NEXT: #define DECLARE_HELPER() __builtin_printf("%d\n", mylong);
// CHECK-NEXT: ~~ ^~~~~~
// CHECK-NEXT: {{.*}}:229:9: warning: format specifies type 'int' but the argument has type 'long'
// CHECK-NEXT: APPLY(DECLARE_HELPER, ())
// CHECK-NEXT: ~~~~~~^~~~~~~~~~~~~~~~~~~
// CHECK-NEXT: {{.*}}:225:27: note: expanded from macro 'APPLY'
// CHECK-NEXT: #define APPLY(macro, arg) macro arg
// CHECK-NEXT: ^~~~~~~~~
// CHECK-NEXT: {{.*}}:226:51: note: expanded from macro 'DECLARE_HELPER'
// CHECK-NEXT: #define DECLARE_HELPER() __builtin_printf("%d\n", mylong);
// CHECK-NEXT: ~~ ^~~~~~
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