diff mbox series

[bpf-next,v4,2/2] selftests/bpf: Update btf_dump case for conflicting names

Message ID 20220301053250.1464204-3-xukuohai@huawei.com (mailing list archive)
State Accepted
Commit bd004cad78c04d762a99127af2f8208b9579af21
Delegated to: BPF
Headers show
Series Fix btf dump error caused by declaration | expand

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netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 5 maintainers not CCed: linux-kselftest@vger.kernel.org kpsingh@kernel.org john.fastabend@gmail.com alan.maguire@oracle.com netdev@vger.kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 93 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next success VM_Test

Commit Message

Xu Kuohai March 1, 2022, 5:32 a.m. UTC 
Update btf_dump case for conflicting names caused by forward
declaration.

Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Acked-by: Song Liu <songliubraving@fb.com>
---
 .../selftests/bpf/prog_tests/btf_dump.c       | 54 ++++++++++++++-----
 1 file changed, 41 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 9e26903f9170..5fce7008d1ff 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -148,22 +148,38 @@  static void test_btf_dump_incremental(void)
 
 	/* First, generate BTF corresponding to the following C code:
 	 *
-	 * enum { VAL = 1 };
+	 * enum x;
+	 *
+	 * enum x { X = 1 };
+	 *
+	 * enum { Y = 1 };
+	 *
+	 * struct s;
 	 *
 	 * struct s { int x; };
 	 *
 	 */
+	id = btf__add_enum(btf, "x", 4);
+	ASSERT_EQ(id, 1, "enum_declaration_id");
+	id = btf__add_enum(btf, "x", 4);
+	ASSERT_EQ(id, 2, "named_enum_id");
+	err = btf__add_enum_value(btf, "X", 1);
+	ASSERT_OK(err, "named_enum_val_ok");
+
 	id = btf__add_enum(btf, NULL, 4);
-	ASSERT_EQ(id, 1, "enum_id");
-	err = btf__add_enum_value(btf, "VAL", 1);
-	ASSERT_OK(err, "enum_val_ok");
+	ASSERT_EQ(id, 3, "anon_enum_id");
+	err = btf__add_enum_value(btf, "Y", 1);
+	ASSERT_OK(err, "anon_enum_val_ok");
 
 	id = btf__add_int(btf, "int", 4, BTF_INT_SIGNED);
-	ASSERT_EQ(id, 2, "int_id");
+	ASSERT_EQ(id, 4, "int_id");
+
+	id = btf__add_fwd(btf, "s", BTF_FWD_STRUCT);
+	ASSERT_EQ(id, 5, "fwd_id");
 
 	id = btf__add_struct(btf, "s", 4);
-	ASSERT_EQ(id, 3, "struct_id");
-	err = btf__add_field(btf, "x", 2, 0, 0);
+	ASSERT_EQ(id, 6, "struct_id");
+	err = btf__add_field(btf, "x", 4, 0, 0);
 	ASSERT_OK(err, "field_ok");
 
 	for (i = 1; i < btf__type_cnt(btf); i++) {
@@ -173,11 +189,20 @@  static void test_btf_dump_incremental(void)
 
 	fflush(dump_buf_file);
 	dump_buf[dump_buf_sz] = 0; /* some libc implementations don't do this */
+
 	ASSERT_STREQ(dump_buf,
+"enum x;\n"
+"\n"
+"enum x {\n"
+"	X = 1,\n"
+"};\n"
+"\n"
 "enum {\n"
-"	VAL = 1,\n"
+"	Y = 1,\n"
 "};\n"
 "\n"
+"struct s;\n"
+"\n"
 "struct s {\n"
 "	int x;\n"
 "};\n\n", "c_dump1");
@@ -199,10 +224,12 @@  static void test_btf_dump_incremental(void)
 	fseek(dump_buf_file, 0, SEEK_SET);
 
 	id = btf__add_struct(btf, "s", 4);
-	ASSERT_EQ(id, 4, "struct_id");
-	err = btf__add_field(btf, "x", 1, 0, 0);
+	ASSERT_EQ(id, 7, "struct_id");
+	err = btf__add_field(btf, "x", 2, 0, 0);
+	ASSERT_OK(err, "field_ok");
+	err = btf__add_field(btf, "y", 3, 32, 0);
 	ASSERT_OK(err, "field_ok");
-	err = btf__add_field(btf, "s", 3, 32, 0);
+	err = btf__add_field(btf, "s", 6, 64, 0);
 	ASSERT_OK(err, "field_ok");
 
 	for (i = 1; i < btf__type_cnt(btf); i++) {
@@ -214,9 +241,10 @@  static void test_btf_dump_incremental(void)
 	dump_buf[dump_buf_sz] = 0; /* some libc implementations don't do this */
 	ASSERT_STREQ(dump_buf,
 "struct s___2 {\n"
+"	enum x x;\n"
 "	enum {\n"
-"		VAL___2 = 1,\n"
-"	} x;\n"
+"		Y___2 = 1,\n"
+"	} y;\n"
 "	struct s s;\n"
 "};\n\n" , "c_dump1");