fix CLANG_BPF_CO_RE_PROBE_CMD.

When global variables are not initialized, the original command will get incorrect results in some versions of clang environment.
libbpf · Dec 5, 2023 · da60bd3 · da60bd3
1 parent 687e7f0
commit da60bd3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Makefile.feature b/src/Makefile.feature
@@ -27,7 +27,7 @@ endif
 ### feature-clang-bpf-co-re
 
 CLANG_BPF_CO_RE_PROBE_CMD = \
-  printf '%s\n' 'struct s { int i; } __attribute__((preserve_access_index)); struct s foo;' | \
+  printf '%s\n' 'struct s { int i; } __attribute__((preserve_access_index)); struct s foo = {};' | \
     $(CLANG) -g -target bpf -S -o - -x c - $(QUIET_STDERR) | grep -q BTF_KIND_VAR
 
 ifneq ($(findstring clang-bpf-co-re,$(FEATURE_TESTS)),)