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authorassar <assar@FreeBSD.org>2001-06-18 04:44:23 +0000
committerassar <assar@FreeBSD.org>2001-06-18 04:44:23 +0000
commit4c51e07cb56294605c0ed4bc0ca70602438ccd79 (patch)
tree4c24782e5063e27f63c4136644a63b7513484d18 /lib/libc/stdio/local.h
parentd9a93f32bcdb8c85b1af40b22bfed42fdead264a (diff)
downloadFreeBSD-src-4c51e07cb56294605c0ed4bc0ca70602438ccd79.zip
FreeBSD-src-4c51e07cb56294605c0ed4bc0ca70602438ccd79.tar.gz
(cantwrite): do not allocate memory for a NULL string
PR: misc/26044 MFC after: 1 week Submitted by: bde
Diffstat (limited to 'lib/libc/stdio/local.h')
-rw-r--r--lib/libc/stdio/local.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h
index 3e498d3..06fecc9 100644
--- a/lib/libc/stdio/local.h
+++ b/lib/libc/stdio/local.h
@@ -81,7 +81,8 @@ struct __sFILEX {
* Return true iff the given FILE cannot be written now.
*/
#define cantwrite(fp) \
- ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
+ ((((fp)->_flags & __SWR) == 0 || \
+ ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \
__swsetup(fp))
/*
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