On Tue, Mar 12, 2019 at 11:20 AM Aldy Hernandez <al...@redhat.com> wrote: > > I have some libgo failures which I'm pretty sure I caused (see below for > details), but I can't seem to figure out how to reproduce. Before I go > down the rabbit hole, is there an easy way of reproducing say: > > FAIL: database/sql > FAIL: net/http > > I'm used to scouring > x86_64-pc-linux-gnu/libWHATEVER/testsuite/libWHATEVER.log and gaining > insight on how to manually run tests. However, there's nothing in > libgo/testsuite, and libgo/libgo.log just has a summary of tests. > > Ideally I'd like a way of building a test (with say -fdump-tree-all), > and/or sticking gdb on the resulting executable.
To run a test, cd to the libgo build directly (TARGET/libgo) and run `make database/sql/check`. To see the exact commands that it runs, including how the compiler is invoked, run `make GOTESTFLAGS=--trace database/sql/check`. To leave the directory behind with the test program, run `make GOTESTFLAGS=--keep database/sql/check`. That will leave a gotestNNNN/test directory. In that directory you can run `LD_LIBRARY_PATH=../../.libs ./a.out -test.short` to run the tests. You can run specific failing tests using a -test.run option. You can of course run gdb on the program. Hope that helps. Ian > --- FAIL: TestMaxIdleConns (0.00s) > sql_test.go:1789: freeConns after set to zero = -1; want 0 > sql_test.go:1798: freeConns = -1; want 0 > panic: runtime error: makeslice: cap out of range [recovered] > panic: runtime error: makeslice: cap out of range > > goroutine 202 [running]: > panic > /home/cygnus/aldyh/src/gcc/libgo/go/runtime/panic.go:588 > testing.tRunner..func1 > /home/cygnus/aldyh/src/gcc/libgo/go/testing/testing.go:765 > panic > /home/cygnus/aldyh/src/gcc/libgo/go/runtime/panic.go:535 > database..z2fsql.DB.Close > > /home/cygnus/aldyh/bld/ranger/x86_64-pc-linux-gnu/libgo/gotest51314/test/sql.go:768 > sql.closeDB > > /home/cygnus/aldyh/bld/ranger/x86_64-pc-linux-gnu/libgo/gotest51314/test/sql_test.go:140 > database..z2fsql.TestMaxIdleConns > > /home/cygnus/aldyh/bld/ranger/x86_64-pc-linux-gnu/libgo/gotest51314/test/sql_test.go:1800 > testing.tRunner > /home/cygnus/aldyh/src/gcc/libgo/go/testing/testing.go:827 > created by testing.T.Run > /home/cygnus/aldyh/src/gcc/libgo/go/testing/testing.go:878 +1163 > FAIL: database/sql > > > [snip] > [snip] > > net..z2fhttp.persistConn.writeLoop > > /home/cygnus/aldyh/bld/ranger/x86_64-pc-linux-gnu/32/libgo/gotest2965/test/transport.go:1888 > created by net..z2fhttp.Transport.dialConn > > /home/cygnus/aldyh/bld/ranger/x86_64-pc-linux-gnu/32/libgo/gotest2965/test/transport.go:1339 > +2693 > > eax 0x0 > ebx 0x2 > ecx 0xcbbdd84c > edx 0x0 > edi 0x0 > esi 0x8 > ebp 0xcbbdd84c > esp 0xcbbdd830 > eip 0xf7f93049 > eflags 0x286 > cs 0x23 > fs 0x0 > gs 0x63 > FAIL: net/http
