[llvm] [llvm-symbolizer] Improve error messages for filter symbolization failure (PR #114649)

[James Henderson via llvm-commits]

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@@ -1,10 +1,10 @@
-RUN: llvm-symbolizer --build-id=abad 0x1234 0x5678 > %t.stdout 2> %t.stderr
-RUN: FileCheck %s --check-prefix=STDOUT < %t.stdout
-RUN: FileCheck %s --check-prefix=STDERR < %t.stderr
+RUN: llvm-symbolizer --build-id=abad 0x1234 0x5678 > %t.out 2> %t.err
+RUN: FileCheck %s --check-prefix=STDOUT -input-file=%t.out --match-full-lines --strict-whitespace
+RUN: FileCheck %s --check-prefix=STDERR -input-file=%t.err --match-full-lines --strict-whitespace
 
-STDOUT: ??
-STDOUT: ??:0:0
-STDOUT: ??
-STDOUT: ??:0:0
+STDOUT:??
+STDOUT:??:0:0
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jh7370 wrote:

Whilst you're at it, can these lines all have the `-NEXT` suffix?

https://github.com/llvm/llvm-project/pull/114649