test: fix UB in evbuffer/empty_reference_prepend_buffer

UBSAN reports: test/regress_buffer.c:2360:2: runtime error: null pointer passed as argument 1, which is declared to never be null /usr/include/string.h:140:33: note: nonnull attribute specified here
azat · Jul 5, 2020 · ba19b35 · ba19b35
1 parent 9da1743
commit ba19b35
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/regress_buffer.c b/test/regress_buffer.c
@@ -2357,7 +2357,7 @@ test_evbuffer_empty_reference_prepend_buffer(void *ptr)
  tt_assert(!strncmp((char *)evbuffer_pullup(buf2, -1), "foo", 3));
  evbuffer_validate(buf2);
 
- tt_assert(!strncmp((char *)evbuffer_pullup(buf1, -1), "", 0));
+ tt_assert(evbuffer_pullup(buf1, -1) == NULL);
  evbuffer_validate(buf2);
 
 end: