-Wuninitialized bugfix: when entering the scope of a variable with no
initializer, it is uninitialized, even if we may be coming from somewhere where
it was initialized.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158611 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/uninit-variables.c b/test/Sema/uninit-variables.c
index ef03d44..180d60c 100644
--- a/test/Sema/uninit-variables.c
+++ b/test/Sema/uninit-variables.c
@@ -437,3 +437,28 @@
int c; // expected-note {{initialize the variable 'c' to silence this warning}}
ASSIGN(int, c, d); // expected-warning {{variable 'c' is uninitialized when used here}}
}
+
+void uninit_in_loop() {
+ int produce(void);
+ void consume(int);
+ for (int n = 0; n < 100; ++n) {
+ int k; // expected-note {{initialize}}
+ consume(k); // expected-warning {{variable 'k' is uninitialized}}
+ k = produce();
+ }
+}
+
+void uninit_in_loop_goto() {
+ int produce(void);
+ void consume(int);
+ for (int n = 0; n < 100; ++n) {
+ goto skip_decl;
+ int k; // expected-note {{initialize}}
+skip_decl:
+ // FIXME: This should produce the 'is uninitialized' diagnostic, but we
+ // don't have enough information in the CFG to easily tell that the
+ // variable's scope has been left and re-entered.
+ consume(k); // expected-warning {{variable 'k' may be uninitialized}}
+ k = produce();
+ }
+}