mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-21 10:59:17 +08:00
112 lines
4.4 KiB
Plaintext
112 lines
4.4 KiB
Plaintext
We're in the process of converting the existing testsuite machinery to
|
|
use the new style DejaGnu framework. Eventually, we'll abandon
|
|
../mkcheck.in in favor of this new testsuite framework.
|
|
|
|
Basically, a testcase contains dg-keywords (see dg.exp) indicating
|
|
what to do and what kinds of behaviour are to be expected. New
|
|
testcases should be written with the new style DejaGnu framework in
|
|
mind.
|
|
|
|
To ease transition, here is the list of dg-keyword documentation
|
|
lifted from dg.exp -- eventuaklly we should improve DejaGnu
|
|
documentation, but getting checkin account currently demands Pyrrhic
|
|
effort.
|
|
|
|
# The currently supported options are:
|
|
#
|
|
# dg-prms-id N
|
|
# set prms_id to N
|
|
#
|
|
# dg-options "options ..." [{ target selector }]
|
|
# specify special options to pass to the tool (eg: compiler)
|
|
#
|
|
# dg-do do-what-keyword [{ target/xfail selector }]
|
|
# `do-what-keyword' is tool specific and is passed unchanged to
|
|
# ${tool}-dg-test. An example is gcc where `keyword' can be any of:
|
|
# preprocess|compile|assemble|link|run
|
|
# and will do one of: produce a .i, produce a .s, produce a .o,
|
|
# produce an a.out, or produce an a.out and run it (the default is
|
|
# compile).
|
|
#
|
|
# dg-error regexp comment [{ target/xfail selector } [{.|0|linenum}]]
|
|
# indicate an error message <regexp> is expected on this line
|
|
# (the test fails if it doesn't occur)
|
|
# Linenum=0 for general tool messages (eg: -V arg missing).
|
|
# "." means the current line.
|
|
#
|
|
# dg-warning regexp comment [{ target/xfail selector } [{.|0|linenum}]]
|
|
# indicate a warning message <regexp> is expected on this line
|
|
# (the test fails if it doesn't occur)
|
|
#
|
|
# dg-bogus regexp comment [{ target/xfail selector } [{.|0|linenum}]]
|
|
# indicate a bogus error message <regexp> use to occur here
|
|
# (the test fails if it does occur)
|
|
#
|
|
# dg-build regexp comment [{ target/xfail selector }]
|
|
# indicate the build use to fail for some reason
|
|
# (errors covered here include bad assembler generated, tool crashes,
|
|
# and link failures)
|
|
# (the test fails if it does occur)
|
|
#
|
|
# dg-excess-errors comment [{ target/xfail selector }]
|
|
# indicate excess errors are expected (any line)
|
|
# (this should only be used sparingly and temporarily)
|
|
#
|
|
# dg-output regexp [{ target selector }]
|
|
# indicate the expected output of the program is <regexp>
|
|
# (there may be multiple occurrences of this, they are concatenated)
|
|
#
|
|
# dg-final { tcl code }
|
|
# add some tcl code to be run at the end
|
|
# (there may be multiple occurrences of this, they are concatenated)
|
|
# (unbalanced braces must be \-escaped)
|
|
#
|
|
# "{ target selector }" is a list of expressions that determine whether the
|
|
# test succeeds or fails for a particular target, or in some cases whether the
|
|
# option applies for a particular target. If the case of `dg-do' it specifies
|
|
# whether the testcase is even attempted on the specified target.
|
|
#
|
|
# The target selector is always optional. The format is one of:
|
|
#
|
|
# { xfail *-*-* ... } - the test is expected to fail for the given targets
|
|
# { target *-*-* ... } - the option only applies to the given targets
|
|
#
|
|
# At least one target must be specified, use *-*-* for "all targets".
|
|
# At present it is not possible to specify both `xfail' and `target'.
|
|
# "native" may be used in place of "*-*-*".
|
|
#
|
|
# Example:
|
|
#
|
|
# [ ... some complicated code ... ]
|
|
# return a; /* { dg-build "fatal" "ran out of spill regs" { xfail i386-*-* } } */
|
|
#
|
|
# In this example, the compiler use to crash on the "return a;" for some
|
|
# target and that it still does crash on i386-*-*. Admittedly, this is a
|
|
# contrived example.
|
|
#
|
|
# ??? It might be possible to add additional optional arguments by having
|
|
# something like: { dg-error ".*syntax.*" "syntax error" { { foo 1 } ... } }
|
|
|
|
|
|
The V3 testing framework supports additional keywords for the purpose
|
|
of easing the job of writing testcases. All V3-keywords are of the
|
|
form @xxx@. Currently supported keywords include:
|
|
|
|
@require@ <files>
|
|
The existence of <files> is essential for the test to complete
|
|
successfully. For example, a testcase foo.C using bar.baz as
|
|
input file could say
|
|
// @require@ bar.baz
|
|
The special variable % stands for the rootname, e.g. the
|
|
file-name without its `.C' extension. Example of use (taken
|
|
verbatim from 27_io/filebuf.cc)
|
|
// @require@ %-*.tst %-*.txt
|
|
|
|
@diff@ <first-list> <second-list>
|
|
After the testcase compiles and ran successfully, diff
|
|
<first-list> against <second-list>, these lists should have the
|
|
same length. The test fails if diff returns non-zero a pair of
|
|
files.
|
|
|
|
-- Gaby
|