Fixes clang compilation warnings by adding explicit unsigned conversion:
parse_vdso.c:206:22: warning: passing 'const char *' to parameter of
type 'const unsigned char *' converts between pointers to integer types
where one is of the unique plain 'char' type and the other is not
[-Wpointer-sign]
ver_hash = elf_hash(version);
^~~~~~~
parse_vdso.c:59:52: note: passing argument to parameter 'name' here
static unsigned long elf_hash(const unsigned char *name)
^
parse_vdso.c:207:46: warning: passing 'const char *' to parameter of
type 'const unsigned char *' converts between pointers to integer types
where one is of the unique plain 'char' type and the other is not
[-Wpointer-sign]
ELF(Word) chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket];
^~~~
parse_vdso.c:59:52: note: passing argument to parameter 'name' here
static unsigned long elf_hash(const unsigned char *name)
Fixes: 98eedc3a9dbf ("Document the vDSO and add a reference parser")
Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
---
v2: update commit message with correct compiler warning
v3: fix checkpatch errors and indentation
---
tools/testing/selftests/vDSO/parse_vdso.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c
index 413f75620a35..9e29ff0657ea 100644
--- a/tools/testing/selftests/vDSO/parse_vdso.c
+++ b/tools/testing/selftests/vDSO/parse_vdso.c
@@ -203,8 +203,9 @@ void *vdso_sym(const char *version, const char *name)
if (!vdso_info.valid)
return 0;
- ver_hash = elf_hash(version);
- ELF(Word) chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket];
+ ver_hash = elf_hash((const unsigned char *)version);
+ ELF(Word) chain = vdso_info.bucket[
+ elf_hash((const unsigned char *)name) % vdso_info.nbucket];
for (; chain != STN_UNDEF; chain = vdso_info.chain[chain]) {
ELF(Sym) *sym = &vdso_info.symtab[chain];
--
2.45.0.rc0.197.gbae5840b3b-goog
