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env: Use static_assert() to check if default_environment is too large

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Check sizeof(default_environment) against ENV_SIZE in a static_assert()
instead of runtime.
Only check if !USE_HOSTCC (for in fw_env tool ENV_SIZE expands to a
variable, and cannot be checked statically) nad
!DEFAULT_ENV_INSTANCE_EMBEDDED, for in that case the default_environment
variable is not set.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Behún 2021-10-22 15:47:25 +02:00 committed by Simon Glass
parent c5cbbe35fd
commit 37f3758a25
2 changed files with 6 additions and 5 deletions
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5
env/common.c vendored
View file

@ -247,11 +247,6 @@ char *env_get_default(const char *name)
void env_set_default(const char *s, int flags)
{
if (sizeof(default_environment) > ENV_SIZE) {
puts("*** Error - default environment is too large\n\n");
return;
}
if (s) {
if ((flags & H_INTERACTIVE) == 0) {
printf("*** Warning - %s, "

6
include/env_default.h
View file

@ -121,3 +121,9 @@ const char default_environment[] = {
}
#endif
};
#if !defined(USE_HOSTCC) && !defined(DEFAULT_ENV_INSTANCE_EMBEDDED)
#include <env_internal.h>
static_assert(sizeof(default_environment) <= ENV_SIZE,
"Default environment is too large");
#endif