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llvm-project/clang/test/Misc/diag-macro-backtrace2.c

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Fix macro backtrace printing. Sometimes, a macro that expands to another macro name will not be printed in the macro backtrace. This patch finds the missed macro expansions and prints them. Fixes PR16799 llvm-svn: 246237
2015-08-28 07:38:45 +08:00
// RUN: not %clang -cc1 -fsyntax-only %s 2>&1 | FileCheck %s
#define a b
#define b c
#define c(x) d(x)
#define d(x) x*1
#define e f
#define f g
#define g(x) h(x)
#define h(x) x
void PR16799() {
const char str[] = "string";
a(str);
// CHECK: :15:3: error: invalid operands to binary expression
// CHECK: ('const char *' and 'int')
// CHECK: a(str);
Improve the printing of ranges when macros are involved. Trace the ranges through the macro backtrace better. This allows better range highlighting through all levels of the macro bracktrace. Also some improvements to backtrace printer for omitting different backtraces. Patch by Zhengkai Wu. Differential Revision: http://reviews.llvm.org/D12379 llvm-svn: 248454
2015-09-24 09:21:01 +08:00
// CHECK: ^~~~~~
Fix macro backtrace printing. Sometimes, a macro that expands to another macro name will not be printed in the macro backtrace. This patch finds the missed macro expansions and prints them. Fixes PR16799 llvm-svn: 246237
2015-08-28 07:38:45 +08:00
// CHECK: :3:11: note: expanded from macro 'a'
// CHECK: #define a b
// CHECK: ^
// CHECK: :4:11: note: expanded from macro 'b'
// CHECK: #define b c
// CHECK: ^
// CHECK: :5:14: note: expanded from macro 'c'
// CHECK: #define c(x) d(x)
// CHECK: ^~~~
// CHECK: :6:15: note: expanded from macro 'd'
// CHECK: #define d(x) x*1
Improve the printing of ranges when macros are involved. Trace the ranges through the macro backtrace better. This allows better range highlighting through all levels of the macro bracktrace. Also some improvements to backtrace printer for omitting different backtraces. Patch by Zhengkai Wu. Differential Revision: http://reviews.llvm.org/D12379 llvm-svn: 248454
2015-09-24 09:21:01 +08:00
// CHECK: ~^~
Fix macro backtrace printing. Sometimes, a macro that expands to another macro name will not be printed in the macro backtrace. This patch finds the missed macro expansions and prints them. Fixes PR16799 llvm-svn: 246237
2015-08-28 07:38:45 +08:00
e(str);
// CHECK: :33:5: warning: expression result unused
// CHECK: e(str);
// CHECK: ^~~
// CHECK: :8:11: note: expanded from macro 'e'
// CHECK: #define e f
// CHECK: ^
// CHECK: :9:11: note: expanded from macro 'f'
// CHECK: #define f g
// CHECK: ^
// CHECK: :10:16: note: expanded from macro 'g'
// CHECK: #define g(x) h(x)
// CHECK: ^
// CHECK: :11:14: note: expanded from macro 'h'
// CHECK: #define h(x) x
// CHECK: ^
}
// CHECK: 1 warning and 1 error generated.