[clang] [clang][analyzer] Support `fflush` in the StreamChecker (PR #74296)
Balázs Kéri via cfe-commits
cfe-commits at lists.llvm.org
Tue Dec 5 06:53:41 PST 2023
================
@@ -299,6 +299,15 @@ void error_fseek_0(void) {
fclose(F);
}
+void error_fflush(void) {
+ FILE *F = tmpfile();
+ if (!F)
+ return;
+ fclose(F);
+ fflush(F); // expected-warning {{Stream might be already closed}}
+ fflush(NULL); // no-warning
----------------
balazske wrote:
The `fflush(NULL)` should be before `fflush(F)` (probably at the start of the function) because analysis may stop when a warning is emitted (and following code is not reachable).
https://github.com/llvm/llvm-project/pull/74296
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