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authorUlrich Drepper <drepper@redhat.com>2007-07-08 04:41:34 +0000
committerUlrich Drepper <drepper@redhat.com>2007-07-08 04:41:34 +0000
commit0923a2c896f09795cca4a6d800a336a56b0ee42c (patch)
tree10038ab54362ef2ee4ab5384e39dacce92d18d9e /stdio-common
parente9055017f6d2015c4c74c94b1c2bf59968db223f (diff)
downloadglibc-0923a2c896f09795cca4a6d800a336a56b0ee42c.tar.gz
* stdio-common/vfscanf.c (_IO_vfscanf): Add additional test for EOF
in loop to look for conversion specifier to avoid testing of wrong errno value. * stdio-common/Makefile (tests): Add bug18, bug18a, bug19, bug19a. * stdio-common/bug18a.c: New file. * stdio-common/bug19.c: New file. * stdio-common/bug19a.c: New file.
Diffstat (limited to 'stdio-common')
-rw-r--r--stdio-common/Makefile3
-rw-r--r--stdio-common/bug19.c58
-rw-r--r--stdio-common/bug19a.c7
-rw-r--r--stdio-common/vfscanf.c11
4 files changed, 75 insertions, 4 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index d8f095ed55..4ead0f9574 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -54,7 +54,8 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \
tst-swprintf tst-fseek tst-fmemopen test-vfprintf tst-gets \
tst-perror tst-sprintf tst-rndseek tst-fdopen tst-fphex bug14 bug15 \
tst-popen tst-unlockedio tst-fmemopen2 tst-put-error tst-fgets \
- tst-fwrite bug16 bug17 tst-swscanf tst-sprintf2 bug18 bug18a
+ tst-fwrite bug16 bug17 tst-swscanf tst-sprintf2 bug18 bug18a \
+ bug19 bug19a
test-srcs = tst-unbputc tst-printf
diff --git a/stdio-common/bug19.c b/stdio-common/bug19.c
new file mode 100644
index 0000000000..e083304bda
--- /dev/null
+++ b/stdio-common/bug19.c
@@ -0,0 +1,58 @@
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+
+#ifndef CHAR
+# define CHAR char
+# define L(str) str
+# define FPUTS fputs
+# define FSCANF fscanf
+#endif
+
+
+static int
+do_test (void)
+{
+ FILE *fp = tmpfile ();
+ if (fp == NULL)
+ {
+ puts ("cannot open file");
+ return 1;
+ }
+
+ FPUTS (L("7-11"), fp);
+ rewind (fp);
+
+ printf("setting errno to EINTR\n");
+ errno = EINTR;
+
+ printf("checking sscanf\n");
+
+ int i, j, n;
+
+ i = j = n = 0;
+ FSCANF (fp, L(" %i - %i %n"), &i, &j, &n);
+ printf ("found %i-%i (length=%i)\n", i, j, n);
+
+ int result = 0;
+ if (i != 7)
+ {
+ printf ("i is %d, expected 7\n", i);
+ result = 1;
+ }
+ if (j != 11)
+ {
+ printf ("j is %d, expected 11\n", j);
+ result = 1;
+ }
+ if (n != 4)
+ {
+ printf ("n is %d, expected 4\n", j);
+ result = 1;
+ }
+
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/stdio-common/bug19a.c b/stdio-common/bug19a.c
new file mode 100644
index 0000000000..c723398503
--- /dev/null
+++ b/stdio-common/bug19a.c
@@ -0,0 +1,7 @@
+#include <wchar.h>
+#define CHAR wchar_t
+#define L(str) L##str
+#define FPUTS fputws
+#define FSCANF fwscanf
+
+#include "bug19.c"
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c
index b1469b9a9e..9e6daced5d 100644
--- a/stdio-common/vfscanf.c
+++ b/stdio-common/vfscanf.c
@@ -530,12 +530,17 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
{
/* Eat whitespace. */
int save_errno = errno;
- errno = 0;
+ __set_errno (0);
do
- if (__builtin_expect (inchar () == EOF && errno == EINTR, 0))
+ /* We add the additional test for EOF here since otherwise
+ inchar will restore the old errno value which might be
+ EINTR but does not indicate an interrupt since nothing
+ was read at this time. */
+ if (__builtin_expect ((c == EOF || inchar () == EOF)
+ && errno == EINTR, 0))
input_error ();
while (ISSPACE (c));
- errno = save_errno;
+ __set_errno (save_errno);
ungetc (c, s);
skip_space = 0;
}