[1/3] Add tests for declaration-only struct diffs.

diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index 6e926ebd..a1b9bf64 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -146,6 +146,11 @@  test-abidiff-exit/test-member-size-v1.cc \
 test-abidiff-exit/test-member-size-v1.o \
 test-abidiff-exit/test-member-size-report0.txt \
 test-abidiff-exit/test-member-size-report1.txt \
+test-abidiff-exit/test-decl-struct-v0.c \
+test-abidiff-exit/test-decl-struct-v0.o \
+test-abidiff-exit/test-decl-struct-v1.c \
+test-abidiff-exit/test-decl-struct-v1.o \
+test-abidiff-exit/test-decl-struct-report.txt \
 \
 test-diff-dwarf/test0-v0.cc		\
 test-diff-dwarf/test0-v0.o			\
diff --git a/tests/data/test-abidiff-exit/test-decl-struct-report.txt b/tests/data/test-abidiff-exit/test-decl-struct-report.txt
new file mode 100644
index 00000000..aa5dedae
--- /dev/null
+++ b/tests/data/test-abidiff-exit/test-decl-struct-report.txt
@@ -0,0 +1,17 @@ 
+Functions changes summary: 0 Removed, 2 Changed, 0 Added functions
+Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
+
+2 functions with some indirect sub-type change:
+
+  [C] 'function void reg1(const embodied*)' at test-decl-struct-v1.c:4:1 has some indirect sub-type changes:
+    parameter 1 of type 'const embodied*' has sub-type changes:
+      in pointed to type 'const embodied':
+        in unqualified underlying type 'struct embodied' at test-decl-struct-v1.c:1:1:
+          type size changed from 0 to 32 (in bits)
+          type struct embodied was a declaration-only type and is now a defined type
+  [C] 'function void reg2(const disembodied*)' at test-decl-struct-v1.c:5:1 has some indirect sub-type changes:
+    parameter 1 of type 'const disembodied*' has sub-type changes:
+      in pointed to type 'const disembodied':
+        in unqualified underlying type 'struct disembodied':
+          type size changed from 32 to 0 (in bits)
+          type struct disembodied was a defined type and is now a declaration-only type
diff --git a/tests/data/test-abidiff-exit/test-decl-struct-v0.c b/tests/data/test-abidiff-exit/test-decl-struct-v0.c
new file mode 100644
index 00000000..2aca0211
--- /dev/null
+++ b/tests/data/test-abidiff-exit/test-decl-struct-v0.c
@@ -0,0 +1,5 @@ 
+struct embodied;
+struct disembodied { int x; };
+
+void reg1(const struct embodied * foo) { (void)foo; }
+void reg2(const struct disembodied * foo) { (void)foo; }
diff --git a/tests/data/test-abidiff-exit/test-decl-struct-v0.o b/tests/data/test-abidiff-exit/test-decl-struct-v0.o
new file mode 100644
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GIT binary patch
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diff --git a/tests/data/test-abidiff-exit/test-decl-struct-v1.c b/tests/data/test-abidiff-exit/test-decl-struct-v1.c
new file mode 100644
index 00000000..c069fa5e
--- /dev/null
+++ b/tests/data/test-abidiff-exit/test-decl-struct-v1.c
@@ -0,0 +1,5 @@ 
+struct embodied { int y; };
+struct disembodied;
+
+void reg1(const struct embodied * foo) { (void)foo; }
+void reg2(const struct disembodied * foo) { (void)foo; }
diff --git a/tests/data/test-abidiff-exit/test-decl-struct-v1.o b/tests/data/test-abidiff-exit/test-decl-struct-v1.o
new file mode 100644
index 0000000000000000000000000000000000000000..ee0b463b7052f715fad177dd718d6464f8f0790e
GIT binary patch
literal 3016
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diff --git a/tests/test-abidiff-exit.cc b/tests/test-abidiff-exit.cc
index 25f58b34..5afc15bc 100644
--- a/tests/test-abidiff-exit.cc
+++ b/tests/test-abidiff-exit.cc
@@ -194,6 +194,15 @@  InOutSpec in_out_specs[] =
     "data/test-abidiff-exit/test-member-size-report1.txt",
     "output/test-abidiff-exit/test-member-size-report1.txt"
   },
+  {
+    "data/test-abidiff-exit/test-decl-struct-v0.o",
+    "data/test-abidiff-exit/test-decl-struct-v1.o",
+    "",
+    "--harmless",
+    abigail::tools_utils::ABIDIFF_ABI_CHANGE,
+    "data/test-abidiff-exit/test-decl-struct-report.txt",
+    "output/test-abidiff-exit/test-decl-struct-report.txt"
+  },
   {0, 0, 0 ,0,  abigail::tools_utils::ABIDIFF_OK, 0, 0}
 };