Failures on Ubuntu-AArch32-m32, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	ubuntu-trusty-aarch32-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Ubuntu-AArch32-m32/builds/917>

Commit(s) tested:
	bc491f2e76df1f2cec877eb07e88209b609ddecf

Author(s) (in the same order as the commits):
	Yao Qi <yao.qi@linaro.org>

Subject:
	Use obstack_grow_str

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Ubuntu-AArch32-m32/bc/bc491f2e76df1f2cec877eb07e88209b609ddecf/>

*** Diff to previous build ***
============================
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=2: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=4: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=5: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=6: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=10: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=11: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=12: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=15: wait for stops
new FAIL: gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=17: wait for stops
new FAIL: gdb.threads/sigstep-threads.exp: step 83
============================


*** Complete list of XFAILs for this builder ***

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