================
@@ -376,3 +377,75 @@ void fflush_on_open_failed_stream(void) {
}
fclose(F);
}
+
+void getline_null_file() {
+ char *buffer = NULL;
+ size_t n = 0;
+ getline(&buffer, &n, NULL); // expected-warning {{Stream pointer might be
NULL}}
+}
+
+void getdelim_null_file() {
+ char *buffer = NULL;
+ size_t n = 0;
+ getdelim(&buffer, &n, '\n', NULL); // expected-warning {{Stream pointer
might be NULL}}
+}
+
+void getline_buffer_on_error() {
+ FILE *file = fopen("file.txt", "r");
+ if (file == NULL) {
+ return;
+ }
+
+ char *line = NULL;
+ size_t len = 0;
+ if (getline(&line, &len, file) == -1) {
+ if (line[0] == '\0') {} // expected-warning {{The left operand of '==' is
a garbage value}}
+ } else {
+ if (line[0] == '\0') {} // no warning
+ }
+
+ free(line);
+ fclose(file);
+}
+
+void getline_ret_value() {
+ FILE *file = fopen("file.txt", "r");
+ if (file == NULL) {
+ return;
+ }
+
+ size_t n = 0;
+ char *buffer = NULL;
+ ssize_t r = getline(&buffer, &n, file);
+
+ if (r > -1) {
+ // The return value does *not* include the terminating null byte.
+ // The buffer must be large enough to include it.
+ clang_analyzer_eval(n > r); // expected-warning{{TRUE}}
+ clang_analyzer_eval(buffer != NULL); // expected-warning{{TRUE}}
+ }
+
+ fclose(file);
+ free(buffer);
+}
+
+
+void getline_buffer_size_negative() {
+ FILE *file = fopen("file.txt", "r");
+ if (file == NULL) {
+ return;
+ }
+
+ size_t n = -1;
+ clang_analyzer_eval((ssize_t)n >= 0); // expected-warning{{FALSE}}
+ char *buffer = NULL;
+ ssize_t r = getline(&buffer, &n, file);
+
+ if (r > -1) {
+ clang_analyzer_eval((ssize_t)n > r); // expected-warning{{TRUE}}
+ clang_analyzer_eval(buffer != NULL); // expected-warning{{TRUE}}
----------------
balazske wrote:
This looks like an indentation problem.
https://github.com/llvm/llvm-project/pull/83027
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