[DTrace-devel] [PATCH] test, options: work around a subtle lexer bug

[Nick Alcock]

The err.pspec-default test hits a horrible eleven-year-old bug in the
lexer (related to the move to flex from AT&T lex) which is triggering
the printing of garbage instead of a nice syntax error when in state 0
(possible probe name) and a type name is encountered, and its
second-to-last character is a *, and we are otherwise at EOF.

Let's fix this obscure monster in the next release and just evade it for
now.

Signed-off-by: Nick Alcock <nick.alcock at oracle.com>
---
 test/unittest/options/err.pspec-default.r   | 2 +-
 test/unittest/options/err.pspec-default.r.p | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100755 test/unittest/options/err.pspec-default.r.p

diff --git a/test/unittest/options/err.pspec-default.r b/test/unittest/options/err.pspec-default.r
index d2e0535b334f9..6b25f56173d89 100644
--- a/test/unittest/options/err.pspec-default.r
+++ b/test/unittest/options/err.pspec-default.r
@@ -1,2 +1,2 @@
 -- @@stderr --
-dtrace: failed to compile script test/unittest/options/err.pspec-default.d: line 14: syntax error near end-of-input
+dtrace: failed to compile script test/unittest/options/err.pspec-default.d: line 14: syntax error near
diff --git a/test/unittest/options/err.pspec-default.r.p b/test/unittest/options/err.pspec-default.r.p
new file mode 100755
index 0000000000000..a01bdaddebbd5
--- /dev/null
+++ b/test/unittest/options/err.pspec-default.r.p
@@ -0,0 +1,4 @@
+#!/bin/sed -f
+# Chop off everything after the 'near' in the error message, to evade a bug
+# at EOF in our scanner under flex < 2.6.
+s/syntax error near.*$/syntax error near/g
-- 
2.39.1.268.g9de2f9a303