diff options
| author | Allen Webb <allenwebb@google.com> | 2019-05-30 11:16:53 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-06-03 17:18:35 -0700 |
| commit | 598f37043a434145c8afc26767689552499e8d50 (patch) | |
| tree | 2fe842a8ec49965bf2aa9347a7f3809e1898c5a2 | |
| parent | 0036edd5f4f4215a2a8ed3c13a6c82ad0fc1f39f (diff) | |
| download | chrome-ec-598f37043a434145c8afc26767689552499e8d50.tar.gz | |
printf: Add HIDE_EC_STDLIB and __stdlib_compat defines.
Fuzzing targets are linked against libec.a so that they can invoke ec
functionality while depending on outside libraries that need cstdlib.
An issue was being hit with a libprotobuf-mutator fuzzer target because
protobuf needed the stdlib version of vfnprintf. This change resolves
the issue by keeping the EC version of vfnprinf within libec.a.
BRANCH=none
BUG=chromium:962947
TEST=make -j buildall
Change-Id: Ie0c79199dfba58d5fb04d9f340967a73921d09c8
Signed-off-by: Allen Webb <allenwebb@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1637580
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
| -rw-r--r-- | include/printf.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/printf.h b/include/printf.h index 441a7968f3..f22f8651ba 100644 --- a/include/printf.h +++ b/include/printf.h @@ -55,6 +55,8 @@ * This does NOT use up any arguments. */ +#ifndef HIDE_EC_STDLIB + /** * Print formatted output to a function, like vfprintf() * @@ -68,8 +70,8 @@ * @param args Parameters * @return EC_SUCCESS, or non-zero if output was truncated. */ -int vfnprintf(int (*addchar)(void *context, int c), void *context, - const char *format, va_list args); +__stdlib_compat int vfnprintf(int (*addchar)(void *context, int c), + void *context, const char *format, va_list args); /** * Print formatted outut to a string. @@ -81,7 +83,7 @@ int vfnprintf(int (*addchar)(void *context, int c), void *context, * @param format Format string * @return EC_SUCCESS, or non-zero if output was truncated. */ -int snprintf(char *str, int size, const char *format, ...); +__stdlib_compat int snprintf(char *str, int size, const char *format, ...); /** * Print formatted outut to a string. @@ -94,6 +96,9 @@ int snprintf(char *str, int size, const char *format, ...); * @param args Parameters * @return EC_SUCCESS, or non-zero if output was truncated. */ -int vsnprintf(char *str, int size, const char *format, va_list args); +__stdlib_compat int vsnprintf(char *str, int size, const char *format, + va_list args); + +#endif /* !HIDE_EC_STDLIB */ #endif /* __CROS_EC_PRINTF_H */ |