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Improve gdb.base/float128.exp failure message 

If the "print large128" sub-test fails in a manner that typically
indicates internal overflow due to GDB being built without MPFR
support, explicitly state this in the failure message.

gdb/testsuite/ChangeLog:
2018-06-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdb.base/float128.exp: Add comment and improved fail message
	to the failure case of "print large128" test.
This commit is contained in:
Ulrich Weigand 2018-06-20 16:24:16 +02:00
parent b939d8a0de
commit 1d554008b3
2 changed files with 20 additions and 1 deletions
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5
gdb/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-06-20 Ulrich Weigand <uweigand@de.ibm.com>
* gdb.base/float128.exp: Add comment and improved fail message
to the failure case of "print large128" test.
2018-06-19 Simon Marchi <simon.marchi@ericsson.com>
* configure.ac: Remove AC_PREREQ.

16
gdb/testsuite/gdb.base/float128.exp
View File

@ -75,5 +75,19 @@ gdb_test "print ld" ".* = 10\\.375.*" "the value of ld is changed to 10.375"
gdb_test "print f128" ".* = 20\\.375.*" "the value of f128 is changed to 20.375"
# Test that we can correctly handle the largest IEEE-128 value
gdb_test "print large128" ".* = 1\\.18973149535723176508575932662800702e\\+4932" "print large128"
# Note: If we get "inf" instead of the correct result, we may have run into
# an internal overflow. This typically happens on host platforms without
# native IEEE-128 support where GDB was built without MPFR support.
set test "print large128"
gdb_test_multiple "print large128" "$test" {
-re ".* = 1\\.18973149535723176508575932662800702e\\+4932.*$gdb_prompt $" {
pass "$test"
}
-re ".* = inf.*$gdb_prompt $" {
fail "$test (GDB may be missing MPFR support!)"
}
-re ".*$gdb_prompt $" {
fail "$test"
}
}