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-rw-r--r--stdio-common/Makefile2
-rw-r--r--stdio-common/tst-ferror.c41
-rw-r--r--stdio-common/tst-ferror.input1
3 files changed, 43 insertions, 1 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index b09a3a2eeb..e85cc1db23 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -39,7 +39,7 @@ aux := errlist siglist
distribute := _itoa.h printf-parse.h
tests := tst-printf tstscanf test_rdwr test-popen tstgetln test-fseek \
- temptest tst-fileno test-fwrite tst-ungetc \
+ temptest tst-fileno test-fwrite tst-ungetc tst-ferror \
xbug errnobug \
bug1 bug2 bug3 bug4 bug5 bug6 bug7 bug8 bug9 bug10 bug11 \
tfformat tiformat tstdiomisc \
diff --git a/stdio-common/tst-ferror.c b/stdio-common/tst-ferror.c
new file mode 100644
index 0000000000..5f23002c7a
--- /dev/null
+++ b/stdio-common/tst-ferror.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+
+int
+main (int argc, char *argv[])
+{
+ char buf[100];
+ int result = 0;
+
+ if (ferror (stdin) != 0)
+ {
+ fputs ("error bit set for stdin at startup\n", stdout);
+ result = 1;
+ }
+ if (fgets (buf, sizeof buf, stdin) != buf)
+ {
+ fputs ("fgets with existing input has problem\n", stdout);
+ result = 1;
+ }
+ if (ferror (stdin) != 0)
+ {
+ fputs ("error bit set for stdin after setup\n", stdout);
+ result = 1;
+ }
+ if (fputc ('a', stdin) != EOF)
+ {
+ fputs ("fputc to stdin does not terminate with an error\n", stdout);
+ result = 1;
+ }
+ if (ferror (stdin) == 0)
+ {
+ fputs ("error bit not set for stdin after fputc\n", stdout);
+ result = 1;
+ }
+ clearerr (stdin);
+ if (ferror (stdin) != 0)
+ {
+ fputs ("error bit set for stdin after clearerr\n", stdout);
+ result = 1;
+ }
+ return result;
+}
diff --git a/stdio-common/tst-ferror.input b/stdio-common/tst-ferror.input
new file mode 100644
index 0000000000..484ba93ef5
--- /dev/null
+++ b/stdio-common/tst-ferror.input
@@ -0,0 +1 @@
+This is a test.