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llvm-project/clang/test/Misc/macro-backtrace.c

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Fold two run lines into a single logical one, and move them down below the important code in this test to make the test more stable. Now adding further tests won't shift the line numbers occuring in the diagnostic output. llvm-svn: 142118
2011-10-16 15:20:21 +08:00
// Tests for macro expansion backtraces. The RUN and CHECK lines are grouped
// below the test code to reduce noise when updating them.
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
#define M1(A, B) ((A) < (B))
#define M2(A, B) M1(A, B)
#define M3(A, B) M2(A, B)
#define M4(A, B) M3(A, B)
#define M5(A, B) M4(A, B)
#define M6(A, B) M5(A, B)
#define M7(A, B) M6(A, B)
#define M8(A, B) M7(A, B)
#define M9(A, B) M8(A, B)
#define M10(A, B) M9(A, B)
#define M11(A, B) M10(A, B)
#define M12(A, B) M11(A, B)
void f(int *ip, float *fp) {
Fold two run lines into a single logical one, and move them down below the important code in this test to make the test more stable. Now adding further tests won't shift the line numbers occuring in the diagnostic output. llvm-svn: 142118
2011-10-16 15:20:21 +08:00
if (M12(ip, fp)) { }
// RUN: %clang_cc1 -fsyntax-only -fmacro-backtrace-limit 5 %s 2>&1 | FileCheck %s
// CHECK: macro-backtrace.c:18:7: warning: comparison of distinct pointer types ('int *' and 'float *')
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: if (M12(ip, fp)) { }
Rename this test to a more general name in preparation for adding more tests to it to cover more of the macro bactrace functionality. llvm-svn: 142116
2011-10-16 14:55:30 +08:00
// CHECK: macro-backtrace.c:15:19: note: expanded from:
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: #define M12(A, B) M11(A, B)
Rename this test to a more general name in preparation for adding more tests to it to cover more of the macro bactrace functionality. llvm-svn: 142116
2011-10-16 14:55:30 +08:00
// CHECK: macro-backtrace.c:14:19: note: expanded from:
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: #define M11(A, B) M10(A, B)
Switch the diagnostic messages about macros to use the terms 'expanded' and 'expansions' rather than 'instantiated' and 'contexts'. This is the first of several patches migrating Clang's terminology surrounding macros from 'instantiation' to 'expansion'. llvm-svn: 135135
2011-07-14 16:20:28 +08:00
// CHECK: note: (skipping 7 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
Rename this test to a more general name in preparation for adding more tests to it to cover more of the macro bactrace functionality. llvm-svn: 142116
2011-10-16 14:55:30 +08:00
// CHECK: macro-backtrace.c:6:18: note: expanded from:
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: #define M3(A, B) M2(A, B)
Rename this test to a more general name in preparation for adding more tests to it to cover more of the macro bactrace functionality. llvm-svn: 142116
2011-10-16 14:55:30 +08:00
// CHECK: macro-backtrace.c:5:18: note: expanded from:
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: #define M2(A, B) M1(A, B)
Rename this test to a more general name in preparation for adding more tests to it to cover more of the macro bactrace functionality. llvm-svn: 142116
2011-10-16 14:55:30 +08:00
// CHECK: macro-backtrace.c:4:23: note: expanded from:
Introduce a limit on the depth of the macro instantiation backtrace printed in a diagnostic, similar to the limit we already have on the depth of the template instantiation backtrace. The macro instantiation backtrace is limited to 10 "instantiated from:" diagnostics; when it's longer than that, we'll show the first half, then say how many were suppressed, then show the second half. The limit can be changed with -fmacro-instantiation-limit=N, and turned off with N=0. This eliminates a lot of note spew with libraries making use of the Boost.Preprocess library. llvm-svn: 103014
2010-05-05 01:13:42 +08:00
// CHECK: #define M1(A, B) ((A) < (B))
}