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-rw-r--r--ChangeLog7
-rw-r--r--stdio-common/Makefile4
-rw-r--r--stdio-common/_itoa.c5
-rw-r--r--stdio-common/bug17.c31
4 files changed, 44 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index 905efa7c7c..9a5ec51912 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2007-01-22 Ulrich Drepper <drepper@redhat.com>
+
+ [BZ #3902]
+ * stdio-common/_itoa.c (_itoa): Make sure at least a zero is emitted.
+ * stdio-common/Makefile (tests): Add bug17.
+ * stdio-common/bug17.c: New file.
+
2007-01-19 Ulrich Drepper <drepper@redhat.com>
* iconvdata/brf.c: New file.
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 37bcdb3bc8..98220550f4 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+# Copyright (C) 1991-2006, 2007 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -54,7 +54,7 @@ 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
+ tst-fwrite bug16 bug17
test-srcs = tst-unbputc tst-printf
diff --git a/stdio-common/_itoa.c b/stdio-common/_itoa.c
index f61b23fceb..285fde2ab9 100644
--- a/stdio-common/_itoa.c
+++ b/stdio-common/_itoa.c
@@ -1,5 +1,5 @@
/* Internal function for converting integers to ASCII.
- Copyright (C) 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004
+ Copyright (C) 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Torbjorn Granlund <tege@matematik.su.se>
@@ -269,6 +269,7 @@ _itoa (value, buflim, base, upper_case)
default:
{
+ char *bufend = buflim;
#if BITS_PER_MP_LIMB == 64
mp_limb_t base_multiplier = brec->base_multiplier;
if (brec->flag)
@@ -454,6 +455,8 @@ _itoa (value, buflim, base, upper_case)
}
while (n != 0);
#endif
+ if (buflim == bufend)
+ *--buflim = '0';
}
break;
}
diff --git a/stdio-common/bug17.c b/stdio-common/bug17.c
new file mode 100644
index 0000000000..2ef398674b
--- /dev/null
+++ b/stdio-common/bug17.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <string.h>
+
+static int
+do_test (void)
+{
+ static const char expect[] = "0, 0, 0";
+ char buf[100];
+ int status = 0;
+
+ static const char fmt1[] = "%0d, %0ld, %0lld";
+ snprintf (buf, sizeof (buf), fmt1, 0, 0L, 0LL);
+ if (strcmp (buf, expect) != 0)
+ {
+ printf ("\"%s\": got \"%s\", expected \"%s\"\n", fmt1, buf, expect);
+ status = 1;
+ }
+
+ static const char fmt2[] = "%0u, %0lu, %0llu";
+ snprintf (buf, sizeof (buf), fmt2, 0u, 0uL, 0uLL);
+ if (strcmp (buf, expect) != 0)
+ {
+ printf ("\"%s\": got \"%s\", expected \"%s\"\n", fmt2, buf, expect);
+ status = 1;
+ }
+
+ return status;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"