Messages in this thread Patch in this message |  | | From | Torsten Foertsch <> | Subject | [PATCH] vsscanf do not convert hex numbers starting with a non-digit | Date | Tue, 11 Mar 2003 12:02:16 +0100 |
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Hi,
I found the following little bug in 2.4.19. I did not try newer kernels.
vsscanf refuses to convert a hex number starting with a nondecimal digit like:
char *buf="ff"; unsigned ff=0; sscanf( buf, "%x", &ff ); /* fails: nothing is converted */
Here is a patch that corrects that behaviour:
- --- linux/lib/vsprintf.c 2001-10-11 20:17:22.000000000 +0200 +++ linux.patched/lib/vsprintf.c 2003-03-11 11:52:08.000000000 +0100 @@ -637,7 +637,7 @@ while (isspace(*str)) str++; - - if (!*str || !isdigit(*str)) + if (!*str || !(isdigit(*str) || (base==16 && isxdigit(*str)))) break; switch(qualifier) {
Torsten -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE+bcI7wicyCTir8T4RAgsPAKCZtX+R9tljalegoC4z7xbTo3p38ACfUIYv 5xgo+tQqj8TZmQOM4W0MqqY= =D9hc -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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