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llvm-mirror/test/FileCheck/empty-regex-match-at-start.txt
James Henderson 8c5705fbc6 [FileCheck]Remove assertions that prevent matching an empty string at file start before CHECK-NEXT/SAME
This patch removes two assertions that were preventing writing of a test
that checked an empty line followed by some text. For example:

CHECK: {{^$}}
CHECK-NEXT: foo()

The assertion was because the current location the CHECK-NEXT was
scanning from was the start of the buffer. A similar issue occurred with
CHECK-SAME. These assertions don't protect against anything, as there is
already an error check that checks that CHECK-NEXT/EMPTY/SAME don't
appear first in the checks, and the following code works fine if the
pointer is at the start of the input.

Reviewed by: probinson, thopre, jdenny
Differential Revision: https://reviews.llvm.org/D58784

llvm-svn: 355928
2019-03-12 15:37:34 +00:00

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Plaintext

some text
more text
RUN: FileCheck %s --check-prefix=NEXT --input-file=%s
NEXT: {{^}}
NEXT-NEXT: more text
RUN: FileCheck %s --check-prefix=SAME --input-file=%s
SAME: {{^}}
SAME-SAME: some text
RUN: echo "" > %t
RUN: echo "" >> %t
RUN: FileCheck %s --check-prefix=EMPTY --input-file=%t
EMPTY: {{^}}
EMPTY-EMPTY: