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| author | Evan Green <evgreen@chromium.org> | 2019-08-01 11:20:14 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-10-05 00:47:41 +0000 |
| commit | b63e2a87a75dce8941d087c8736c5a35544ab3b0 (patch) | |
| tree | 32a4bfe24554a38c6ad30dcb38911796d2acea50 /chip/stm32/trng.c | |
| parent | 60d66714d3b41d69942652650672fd5259815538 (diff) | |
| download | chrome-ec-b63e2a87a75dce8941d087c8736c5a35544ab3b0.tar.gz | |
printf: Convert %h to %ph
In order to make printf more standard, use %ph. Pass a pointer to
a struct describing the buffer, including its size. Add a convenience
macro so that conversion between the old style and new style is purely
mechanical. The old style of %h cannot be converted directly to %ph as-is
because the C standard doesn't allow flags, precision, or field width on
%p.
Ultimately the goal is to enable compile-time printf format checking.
This gets us one step closer to that.
BUG=chromium:984041
TEST=make -j buildall
BRANCH=None
Cq-Depend:chrome-internal:1559798,chrome-internal:1560598
Change-Id: I9c0ca124a048314c9b62d64bd55b36be55034e0e
Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1730605
Diffstat (limited to 'chip/stm32/trng.c')
| -rw-r--r-- | chip/stm32/trng.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/chip/stm32/trng.c b/chip/stm32/trng.c index fcc0f5432e..eff3ca0181 100644 --- a/chip/stm32/trng.c +++ b/chip/stm32/trng.c @@ -111,7 +111,7 @@ static int command_rand(int argc, char **argv) rand_bytes(data, sizeof(data)); exit_trng(); - ccprintf("rand %.*h\n", sizeof(data), data); + ccprintf("rand %ph\n", HEX_BUF(data, sizeof(data))); return EC_SUCCESS; } |