58 lines · c
1// Tests for macro expansion backtraces. The RUN and CHECK lines are grouped2// 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 17void 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-LIMIT21 // 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-CARETS37 // 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 as47 // other diagnostics.48 // RUN: %clang_cc1 -fsyntax-only -fdiagnostics-format vi %s 2>&1 \49 // RUN: | FileCheck %s -check-prefix=CHECK-NOTE-FORMAT50 // 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