================
@@ -0,0 +1,133 @@
+// RUN: %clang_analyze_cc1 -verify %s \
+// RUN: -analyzer-checker=core \
+// RUN: -analyzer-checker=alpha.unix.Stream \
+// RUN: -analyzer-checker=debug.StreamTester \
+// RUN: -analyzer-checker=debug.ExprInspection
+
+#include "Inputs/system-header-simulator.h"
+
+void clang_analyzer_eval(int);
+void clang_analyzer_dump(int);
+void clang_analyzer_warnIfReached(void);
+void StreamTesterChecker_make_feof_stream(FILE *);
+void StreamTesterChecker_make_ferror_stream(FILE *);
+
+void test_fread(void) {
+ FILE *F = fopen("file", "r+");
+ if (!F)
+ return;
+
+ char Buf[3] = {10, 10, 10};
+ fread(Buf, 1, 3, F);
+ // this check applies to succes and failure
+ clang_analyzer_dump(Buf[0]); // expected-warning {{conj_$}} Should not
preserve the previous value, thus should not be 10.
+ clang_analyzer_dump(Buf[2]); // expected-warning {{conj_$}}
+ if (feof(F)) {
----------------
balazske wrote:
At `ferror(F)` the next stream call should produce a "file position
indeterminate" warning (this is tested in another file) that stops the
analysis, buffer invalidation is not needed to be tested.
https://github.com/llvm/llvm-project/pull/79470
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