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 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
