[llvm] [llvm-strings] Use small buffer instead of reading whole file (PR #163073)

[Harald van Dijk via llvm-commits]

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@@ -51,57 +43,28 @@
 ## before the chunk start and one after its end. The string is printed
 ## intact, once. The expected output is generated rather than written as a
 ## CHECK line because it is a chunk long.
-# RUN: %python %s 16383 S M at 16384 E 4 > %t.6
-# RUN: %python %s --line S M at 16384 E > %t.6.expected
+# RUN: printf "%16383sS%.16384dE%4s" | tr " " "\0" > %t.6
+# RUN: printf "S%.16384dE\n" > %t.6.expected
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hvdijk wrote:

Sure, a comment to save someone else having to debug that sounds like a good idea to me.

https://github.com/llvm/llvm-project/pull/163073