text-utils/colcrt.c:205:10: runtime error: index -1 out of bounds for type 'wchar_t [133]'
SUMMARY: AddressSanitizer: undefined-behavior text-utils/colcrt.c:205
=================================================================
==2357==ERROR: AddressSanitizer: global-buffer-overflow on address 0x0000013811b0 at pc 0x0000004e2514 bp 0x7ffdf6ba4450 sp 0x7ffdf6ba4448
READ of size 4 at 0x0000013811b0 thread T0
#0 0x4e2513 in colcrt /home/src/util-linux/text-utils/colcrt.c:213:8
#1 0x4e17d4 in main /home/src/util-linux/text-utils/colcrt.c:139:3
#2 0x7fb77236960f in __libc_start_main (/usr/lib/libc.so.6+0x2060f)
#3 0x4362c8 in _start (/home/src/util-linux/colcrt+0x4362c8)
Signed-off-by: Sami Kerola <kerolasa@xxxxxx>
---
text-utils/colcrt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/text-utils/colcrt.c b/text-utils/colcrt.c
index cf630c4..3cf25cb 100644
--- a/text-utils/colcrt.c
+++ b/text-utils/colcrt.c
@@ -201,6 +201,8 @@ void colcrt(FILE *f) {
/* fallthrough */
default:
w = wcwidth(c);
+ if (w < 0)
+ continue;
if (outcol + w > PAGE_ARRAY_COLS) {
outcol++;
continue;
--
2.5.0
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