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Merge pull request #21 from seleznevae/ctype-functions-#20 

[F] Fix undefined behavior due to incorrect usage of isprint
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Seleznev Anton 2019-11-28 21:31:28 +03:00 committed by GitHub
parent 71455ee761 ae26b6c83e
commit 5731d45ae1
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 27 additions and 15 deletions
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2
CMakeLists.txt
View File

@ -1,6 +1,6 @@
cmake_minimum_required(VERSION 3.0)
project(libfort VERSION 0.3.1)
project(libfort VERSION 0.3.2)
string(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)"
"\\1.\\2" libfort_SOVERSION

6
ChangeLog.md
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@ -1,3 +1,9 @@
## v0.3.2
### Bug fixes
- Fix undefined behavior due to incorrect usage of `isprint` function.
## v0.3.1
### Bug fixes

13
lib/fort.c
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@ -2582,7 +2582,6 @@ SOFTWARE.
#include <assert.h>
#include <string.h>
#include <wchar.h>
#include <ctype.h>
/* #include "vector.h" */ /* Commented by amalgamation script */
/* #include "fort_utils.h" */ /* Commented by amalgamation script */
@ -5416,10 +5415,14 @@ int print_row_separator_impl(f_conv_context_t *cntx,
size_t i = 0;
/* If all chars are not printable, skip line separator */
if ((strlen(*L) == 0 || (strlen(*L) == 1 && !isprint(**L)))
&& (strlen(*I) == 0 || (strlen(*I) == 1 && !isprint(**I)))
&& (strlen(*IV) == 0 || (strlen(*IV) == 1 && !isprint(**IV)))
&& (strlen(*R) == 0 || (strlen(*R) == 1 && !isprint(**R)))) {
/* NOTE: argument of `isprint` should be explicitly converted to
* unsigned char according to
* https://en.cppreference.com/w/c/string/byte/isprint
*/
if ((strlen(*L) == 0 || (strlen(*L) == 1 && !isprint((unsigned char) **L)))
&& (strlen(*I) == 0 || (strlen(*I) == 1 && !isprint((unsigned char) **I)))
&& (strlen(*IV) == 0 || (strlen(*IV) == 1 && !isprint((unsigned char) **IV)))
&& (strlen(*R) == 0 || (strlen(*R) == 1 && !isprint((unsigned char) **R)))) {
status = 0;
goto clear;
}

4
lib/fort.h
View File

@ -46,8 +46,8 @@ SOFTWARE.
#define LIBFORT_MAJOR_VERSION 0
#define LIBFORT_MINOR_VERSION 3
#define LIBFORT_REVISION 0
#define LIBFORT_VERSION_STR "0.3.0"
#define LIBFORT_REVISION 2
#define LIBFORT_VERSION_STR "0.3.2"
/*****************************************************************************

4
src/fort.h
View File

@ -46,8 +46,8 @@ SOFTWARE.
#define LIBFORT_MAJOR_VERSION 0
#define LIBFORT_MINOR_VERSION 3
#define LIBFORT_REVISION 1
#define LIBFORT_VERSION_STR "0.3.1"
#define LIBFORT_REVISION 2
#define LIBFORT_VERSION_STR "0.3.2"
/*****************************************************************************

1
src/fort_impl.c
View File

@ -31,7 +31,6 @@ SOFTWARE.
#include <assert.h>
#include <string.h>
#include <wchar.h>
#include <ctype.h>
#include "vector.h"
#include "fort_utils.h"

12
src/row.c
View File

@ -353,10 +353,14 @@ int print_row_separator_impl(f_conv_context_t *cntx,
size_t i = 0;
/* If all chars are not printable, skip line separator */
if ((strlen(*L) == 0 || (strlen(*L) == 1 && !isprint(**L)))
&& (strlen(*I) == 0 || (strlen(*I) == 1 && !isprint(**I)))
&& (strlen(*IV) == 0 || (strlen(*IV) == 1 && !isprint(**IV)))
&& (strlen(*R) == 0 || (strlen(*R) == 1 && !isprint(**R)))) {
/* NOTE: argument of `isprint` should be explicitly converted to
* unsigned char according to
* https://en.cppreference.com/w/c/string/byte/isprint
*/
if ((strlen(*L) == 0 || (strlen(*L) == 1 && !isprint((unsigned char) **L)))
&& (strlen(*I) == 0 || (strlen(*I) == 1 && !isprint((unsigned char) **I)))
&& (strlen(*IV) == 0 || (strlen(*IV) == 1 && !isprint((unsigned char) **IV)))
&& (strlen(*R) == 0 || (strlen(*R) == 1 && !isprint((unsigned char) **R)))) {
status = 0;
goto clear;
}