1 // Tests for macro expansion backtraces. The RUN and CHECK lines are grouped
2 // below the test code to reduce noise when updating them.
3
4 #define M1(A, B) ((A) < (B))
5 #define M2(A, B) M1(A, B)
6 #define M3(A, B) M2(A, B)
7 #define M4(A, B) M3(A, B)
8 #define M5(A, B) M4(A, B)
9 #define M6(A, B) M5(A, B)
10 #define M7(A, B) M6(A, B)
11 #define M8(A, B) M7(A, B)
12 #define M9(A, B) M8(A, B)
13 #define M10(A, B) M9(A, B)
14 #define M11(A, B) M10(A, B)
15 #define M12(A, B) M11(A, B)
16
f(int * ip,float * fp)17 void f(int *ip, float *fp) {
18 if (M12(ip, fp)) { }
19 // RUN: %clang_cc1 -fsyntax-only -fmacro-backtrace-limit 5 %s 2>&1 \
20 // RUN: | FileCheck %s -check-prefix=CHECK-LIMIT
21 // CHECK-LIMIT: macro-backtrace.c:18:7: warning: comparison of distinct pointer types ('int *' and 'float *')
22 // CHECK-LIMIT: if (M12(ip, fp)) { }
23 // CHECK-LIMIT: macro-backtrace.c:15:19: note: expanded from macro 'M12'
24 // CHECK-LIMIT: #define M12(A, B) M11(A, B)
25 // CHECK-LIMIT: macro-backtrace.c:14:19: note: expanded from macro 'M11'
26 // CHECK-LIMIT: #define M11(A, B) M10(A, B)
27 // CHECK-LIMIT: note: (skipping 7 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
28 // CHECK-LIMIT: macro-backtrace.c:6:18: note: expanded from macro 'M3'
29 // CHECK-LIMIT: #define M3(A, B) M2(A, B)
30 // CHECK-LIMIT: macro-backtrace.c:5:18: note: expanded from macro 'M2'
31 // CHECK-LIMIT: #define M2(A, B) M1(A, B)
32 // CHECK-LIMIT: macro-backtrace.c:4:23: note: expanded from macro 'M1'
33 // CHECK-LIMIT: #define M1(A, B) ((A) < (B))
34
35 // RUN: %clang_cc1 -fsyntax-only -fno-caret-diagnostics %s 2>&1 \
36 // RUN: | FileCheck %s -check-prefix=CHECK-NO-CARETS
37 // CHECK-NO-CARETS: macro-backtrace.c:18:7: warning: comparison of distinct pointer types ('int *' and 'float *')
38 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:15:19: note: expanded from macro 'M12'
39 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:14:19: note: expanded from macro 'M11'
40 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:13:19: note: expanded from macro 'M10'
41 // CHECK-NO-CARETS-NEXT: note: (skipping 6 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
42 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:6:18: note: expanded from macro 'M3'
43 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:5:18: note: expanded from macro 'M2'
44 // CHECK-NO-CARETS-NEXT: macro-backtrace.c:4:23: note: expanded from macro 'M1'
45
46 // Check that the expansion notes respect the same formatting options as
47 // other diagnostics.
48 // RUN: %clang_cc1 -fsyntax-only -fdiagnostics-format vi %s 2>&1 \
49 // RUN: | FileCheck %s -check-prefix=CHECK-NOTE-FORMAT
50 // CHECK-NOTE-FORMAT: macro-backtrace.c +18:7: warning:
51 // CHECK-NOTE-FORMAT: macro-backtrace.c +15:19: note:
52 // CHECK-NOTE-FORMAT: macro-backtrace.c +14:19: note:
53 // CHECK-NOTE-FORMAT: note:
54 // CHECK-NOTE-FORMAT: macro-backtrace.c +6:18: note:
55 // CHECK-NOTE-FORMAT: macro-backtrace.c +5:18: note:
56 // CHECK-NOTE-FORMAT: macro-backtrace.c +4:23: note:
57 }
58