Hi Ian.  Hi folks.

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.

Thanks.
Aldy

--- 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

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