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changeset 13806:3468ff86245b

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vasnprintf: Don't set errno to 0. * lib/vasnprintf.c (VASNPRINTF): Save and restore errno around the block that sets it to 0. Reported by Gianluigi Tiesi <sherpya@netfarm.it>.
author Bruno Haible <bruno@clisp.org>
date Fri, 15 Oct 2010 02:01:51 +0200
parents f72343ef3cf6
children 829f93de17ed
files ChangeLog lib/vasnprintf.c
diffstat 2 files changed, 11 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-10-14  Bruno Haible  <bruno@clisp.org>
+
+	vasnprintf: Don't set errno to 0.
+	* lib/vasnprintf.c (VASNPRINTF): Save and restore errno around the
+	block that sets it to 0.
+	Reported by Gianluigi Tiesi <sherpya@netfarm.it>.
+
 2010-10-14  Bruno Haible  <bruno@clisp.org>
 
 	socketlib: Fix.
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -4599,6 +4599,7 @@
                 TCHAR_T *fbp;
                 unsigned int prefix_count;
                 int prefixes[2] IF_LINT (= { 0 });
+                int orig_errno;
 #if !USE_SNPRINTF
                 size_t tmp_length;
                 TCHAR_T tmpbuf[700];
@@ -4902,6 +4903,8 @@
                 *(TCHAR_T *) (result + length) = '\0';
 #endif
 
+                orig_errno = errno;
+
                 for (;;)
                   {
                     int count = -1;
@@ -5499,6 +5502,7 @@
                     length += count;
                     break;
                   }
+                errno = orig_errno;
 #undef pad_ourselves
 #undef prec_ourselves
               }