mgorny created this revision.
mgorny added reviewers: krytarowski, vitalybuka.
Herald added subscribers: Sanitizers, llvm-commits, dberris, kubamracek.
Add two new test cases that test the following stdio.h functions:
- clearerr()
- feof()
- ferror()
- fileno()
- fgetc()
- getc()
- ungetc()
Repository:
rCRT Compiler Runtime
https://reviews.llvm.org/D56136
Files:
test/sanitizer_common/TestCases/Posix/feof_fileno_ferror.cc
test/sanitizer_common/TestCases/Posix/fgetc_ungetc_getc.cc
Index: test/sanitizer_common/TestCases/Posix/fgetc_ungetc_getc.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/Posix/fgetc_ungetc_getc.cc
@@ -0,0 +1,23 @@
+// RUN: %clangxx -g %s -o %t && %run %t
+
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+ FILE *fp;
+
+ fp = fopen(argv[0], "r");
+ if (!fp)
+ return 1;
+
+ if (fgetc(fp) == EOF)
+ return 2;
+
+ if (ungetc('X', fp) == EOF)
+ return 3;
+
+ if (getc(fp) != 'X')
+ return 4;
+
+ fclose(fp);
+ return 0;
+}
Index: test/sanitizer_common/TestCases/Posix/feof_fileno_ferror.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/Posix/feof_fileno_ferror.cc
@@ -0,0 +1,51 @@
+// RUN: %clangxx -g %s -o %t && %run %t
+
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+ FILE *fp;
+ int fd;
+ char buf[BUFSIZ];
+
+ fp = fopen(argv[0], "r");
+ if (!fp)
+ return 1;
+
+ // file should be good upon opening
+ if (feof(fp) || ferror(fp))
+ return 2;
+
+ // read until EOF
+ while (fread(buf, 1, sizeof buf, fp) != 0) {}
+ if (!feof(fp))
+ return 3;
+
+ // clear EOF
+ clearerr(fp);
+ if (feof(fp) || ferror(fp))
+ return 4;
+
+ // get file descriptor
+ fd = fileno(fp);
+ if (fd == -1)
+ return 5;
+
+ // break the file by closing underlying descriptor
+ if (close(fd) == -1)
+ return 6;
+
+ // verify that an error is signalled
+ if (fread(buf, 1, sizeof buf, fp) != 0)
+ return 7;
+ if (!ferror(fp))
+ return 8;
+
+ // clear error
+ clearerr(fp);
+ if (feof(fp) || ferror(fp))
+ return 9;
+
+ fclose(fp);
+ return 0;
+}
Index: test/sanitizer_common/TestCases/Posix/fgetc_ungetc_getc.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/Posix/fgetc_ungetc_getc.cc
@@ -0,0 +1,23 @@
+// RUN: %clangxx -g %s -o %t && %run %t
+
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+ FILE *fp;
+
+ fp = fopen(argv[0], "r");
+ if (!fp)
+ return 1;
+
+ if (fgetc(fp) == EOF)
+ return 2;
+
+ if (ungetc('X', fp) == EOF)
+ return 3;
+
+ if (getc(fp) != 'X')
+ return 4;
+
+ fclose(fp);
+ return 0;
+}
Index: test/sanitizer_common/TestCases/Posix/feof_fileno_ferror.cc
===================================================================
--- /dev/null
+++ test/sanitizer_common/TestCases/Posix/feof_fileno_ferror.cc
@@ -0,0 +1,51 @@
+// RUN: %clangxx -g %s -o %t && %run %t
+
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+ FILE *fp;
+ int fd;
+ char buf[BUFSIZ];
+
+ fp = fopen(argv[0], "r");
+ if (!fp)
+ return 1;
+
+ // file should be good upon opening
+ if (feof(fp) || ferror(fp))
+ return 2;
+
+ // read until EOF
+ while (fread(buf, 1, sizeof buf, fp) != 0) {}
+ if (!feof(fp))
+ return 3;
+
+ // clear EOF
+ clearerr(fp);
+ if (feof(fp) || ferror(fp))
+ return 4;
+
+ // get file descriptor
+ fd = fileno(fp);
+ if (fd == -1)
+ return 5;
+
+ // break the file by closing underlying descriptor
+ if (close(fd) == -1)
+ return 6;
+
+ // verify that an error is signalled
+ if (fread(buf, 1, sizeof buf, fp) != 0)
+ return 7;
+ if (!ferror(fp))
+ return 8;
+
+ // clear error
+ clearerr(fp);
+ if (feof(fp) || ferror(fp))
+ return 9;
+
+ fclose(fp);
+ return 0;
+}
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