[PATCH] Assume an unrecognized gnatmake is very new

[Tom Tromey <tromey@adacore.com>]

I don't know why -- though I suspect there may have been a change to
the output of "gnatmake --version" -- but recently some gdb.ada tests
have stopped running when llvm-gnatmake is used.

The llvm-gnatmake I am testing against prints a version string that
isn't recognized by gnat_version_compare.  However, it seems to me
that AdaCore is probably the main place where this can even occur; and
furthermore that without some extra work, it seems reasonable for
gnat_version_compare to assume that an unrecognized gnatmake is "very
new".
---
 gdb/testsuite/lib/ada.exp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gdb/testsuite/lib/ada.exp b/gdb/testsuite/lib/ada.exp
index e20b35c8ebe..086866aca99 100644
--- a/gdb/testsuite/lib/ada.exp
+++ b/gdb/testsuite/lib/ada.exp
@@ -180,7 +180,8 @@ proc find_ada_tool {tool} {
 }
 
 # Compare the GNAT version against L2 using version_compare.  If the
-# compiler does not appear to be GCC, this will always return false.
+# compiler does not appear to be GCC, this will assume that gnatmake
+# is very new.
 
 proc gnat_version_compare {op l2} {
     set gnatmake [find_gnatmake]
@@ -189,7 +190,8 @@ proc gnat_version_compare {op l2} {
 	return 0
     }
     if {![regexp {GNATMAKE ([0-9]+(\.[0-9]+)*)} $output match version]} {
-	return 0
+	# Assume a "very new" version.
+	set version 99
     }
 
     return [version_compare [split $version .] $op $l2]

base-commit: c2d4b5e1135f75f7e4ef7ff68fa899bfe483671b
-- 
2.54.0