text/template: TestIssue39807 failures #74812
Description
#!watchflakes
default <- pkg == "text/template" && test == "TestIssue39807"
Issue created automatically to collect these failures.
Example (log):
=== RUN TestIssue39807
fatal error: concurrent map read and map write
goroutine 67 gp=0xc00048cc40 m=4 mp=0xc000080008 [running]:
runtime.fatal({0x2d0f39, 0x21})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1268 +0x44 fp=0xc00009ab58 sp=0xc00009ab18 pc=0x59dd4
internal/runtime/maps.fatal({0x2d0f39?, 0x283c60?})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1198 +0x38 fp=0xc00009ab88 sp=0xc00009ab58 pc=0x97138
runtime.mapaccess1_faststr(0x0?, 0xc0000a46b0?, {0x2cae01?, 0x0?})
/home/swarming/.swarming/w/ir/x/w/goroot/src/internal/runtime/maps/runtime_faststr_swiss.go:115 +0x150 fp=0xc00009ac18 sp=0xc00009ab88 pc=0x1ef60
...
sync.(*RWMutex).Lock(0xc0001dd8b8)
/home/swarming/.swarming/w/ir/x/w/goroot/src/sync/rwmutex.go:150 +0x6c fp=0xc00011c688 sp=0xc00011c650 pc=0xa83dc
text/template.(*Template).AddParseTree(0xc000097c40, {0x2c213e, 0x3}, 0xc0000fc240)
/home/swarming/.swarming/w/ir/x/w/goroot/src/text/template/template.go:129 +0x15c fp=0xc00011c728 sp=0xc00011c688 pc=0x2224cc
text/template.TestIssue39807.func1()
/home/swarming/.swarming/w/ir/x/w/goroot/src/text/template/exec_test.go:1976 +0xa0 fp=0xc00011c7c0 sp=0xc00011c728 pc=0x22c730
runtime.goexit({})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_ppc64x.s:1015 +0x4 fp=0xc00011c7c0 sp=0xc00011c7c0 pc=0x9edc4
created by text/template.TestIssue39807 in goroutine 57
/home/swarming/.swarming/w/ir/x/w/goroot/src/text/template/exec_test.go:1973 +0x310