[libbacktrace] Add allocfail.sh test-case

Add test-case that forces alloc.c functions to fail, and check whether fail
handling is robust.

This is the test-case for "[libbacktrace] Fix segfault upon allocation
failure".  Without that patch, this test-case fails like this:
...
allocfail.sh: line 71: 26041 Segmentation fault      (core dumped) \
  ./allocfail $i > /dev/null 2>&1
Unallowed fail found: 13
FAIL allocfail.sh (exit status: 1)
...

This is a seperate patch because the test-case is nontrivial.

Bootstrapped and reg-tested on x86_64.

2018-12-12  Tom de Vries  <tdevries@suse.de>

	* Makefile.am (TESTS): Add allocfail.sh.
	(check_PROGRAMS): Add allocfail.
	* Makefile.in: Regenerate.
	* instrumented_alloc.c: New file.  Redefine malloc and realloc.
	Include alloc.c.
	* allocfail.c: New file.
	* allocfail.sh: New file.

From-SVN: r267054

1 files changed, 20 insertions, 0 deletions

diff --git a/libbacktrace/Makefile.am b/libbacktrace/Makefile.am
index 1a3680bc98c..9d489f7b418 100644
--- a/libbacktrace/Makefile.am
+++ b/libbacktrace/Makefile.am
@@ -145,6 +145,26 @@ unittest_alloc_LDADD = libbacktrace_alloc.la
 
 check_PROGRAMS += unittest_alloc
 
+check_LTLIBRARIES += libbacktrace_instrumented_alloc.la
+
+libbacktrace_instrumented_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_instrumented_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) \
+	read.lo instrumented_alloc.lo
+
+libbacktrace_instrumented_alloc_la_DEPENDENCIES = \
+	$(libbacktrace_instrumented_alloc_la_LIBADD)
+
+instrumented_alloc.lo: alloc.c
+
+allocfail_SOURCES = allocfail.c testlib.c
+allocfail_LDADD = libbacktrace_instrumented_alloc.la
+
+check_PROGRAMS += allocfail
+
+allocfail.sh: allocfail
+
+TESTS += allocfail.sh
+
 btest_SOURCES = btest.c testlib.c
 btest_CFLAGS = $(AM_CFLAGS) -g -O
 btest_LDADD = libbacktrace.la