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| author | Evan Green <evgreen@chromium.org> | 2019-09-23 12:57:40 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-10-05 00:47:45 +0000 |
| commit | 3564b23531fc1814924f39e7ac97751d758c14db (patch) | |
| tree | 39a04f30177288afe594f0d2a22a434a4a5b00f6 /common/printf.c | |
| parent | e34fca3e01d75552ad8d712879c3ccd6a6168584 (diff) | |
| download | chrome-ec-3564b23531fc1814924f39e7ac97751d758c14db.tar.gz | |
printf: Add support for %z
When printing size_t sized integers, utilize the standard %z
modifier so that the specifier format is correct. This will enable us
to turn on compile-time printf format verification.
BUG=chromium:984041
TEST=make -j buildall
BRANCH=none
Cq-Depend:chrome-internal:1860160
Change-Id: I2c95df5c0d87677cb9fcbde33ab8846708a774a1
Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1819651
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Diffstat (limited to 'common/printf.c')
| -rw-r--r-- | common/printf.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/common/printf.c b/common/printf.c index 4da70653ee..3c7bc5feca 100644 --- a/common/printf.c +++ b/common/printf.c @@ -223,9 +223,17 @@ int vfnprintf(int (*addchar)(void *context, int c), void *context, int ptrspec; void *ptrval; - /* Handle length */ + /* + * Handle length: + * %l - long + * %z - size_t + */ if (c == 'l') { flags |= PF_64BIT; + } else if (c == 'z') { + if (sizeof(size_t) == sizeof(uint64_t)) + flags |= PF_64BIT; + c = *format++; } |