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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-12-29 09:57:59 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-01-11 17:50:12 -0300 |
| commit | 0b3503e2e19602db9cda47915d19a26c00f59bb1 (patch) | |
| tree | da4dcdc1ecfb519deebb70d28e051986a1d86c45 /locale | |
| parent | 57f4a850c84a0545dec9aea4242241d2b19fa6af (diff) | |
| download | glibc-0b3503e2e19602db9cda47915d19a26c00f59bb1.tar.gz glibc-0b3503e2e19602db9cda47915d19a26c00f59bb1.tar.xz glibc-0b3503e2e19602db9cda47915d19a26c00f59bb1.zip | |
locale: Use correct buffer size for utf8_sequence_error [BZ #19444]
The buffer used by snprintf might not be large enough for all possible
inputs, as indicated by gcc with -O1:
../locale/programs/linereader.c: In function ‘utf8_sequence_error’:
../locale/programs/linereader.c:713:58: error: ‘%02x’ directive output
may be truncated writing between 2 and 8 bytes into a region of size
between 1 and 13 [-Werror=format-truncation=]
713 | snprintf (buf, sizeof (buf), "0x%02x 0x%02x 0x%02x 0x%02x",
| ^~~~
../locale/programs/linereader.c:713:34: note: directive argument in the
range [0, 2147483647]
713 | snprintf (buf, sizeof (buf), "0x%02x 0x%02x 0x%02x 0x%02x",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../locale/programs/linereader.c:713:5: note: ‘snprintf’ output between
20 and 38 bytes into a destination of size 30
713 | snprintf (buf, sizeof (buf), "0x%02x 0x%02x 0x%02x 0x%02x",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
714 | ch1, ch2, ch3, ch4);
| ~~~~~~~~~~~~~~~~~~~
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'locale')
| -rw-r--r-- | locale/programs/linereader.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/locale/programs/linereader.c b/locale/programs/linereader.c index 17099af744..f8c49ac06f 100644 --- a/locale/programs/linereader.c +++ b/locale/programs/linereader.c @@ -701,7 +701,7 @@ static bool utf8_sequence_error (struct linereader *lr, uint8_t ch1, int ch2, int ch3, int ch4) { - char buf[30]; + char buf[38]; if (ch2 < 0) snprintf (buf, sizeof (buf), "0x%02x", ch1); |