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basic/log: add an assert that does not recurse into logging functions

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Then it can be used in the asserts in logging functions without causing
infinite recursion. The error is just printed to stderr, it should be
good enough for the common case.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-02-23 13:29:03 +01:00
parent 73fc96c8ac
commit 780747da75
1 changed files with 12 additions and 2 deletions
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14
src/basic/log.c
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@ -83,6 +83,16 @@ static bool prohibit_ipc = false;
* use here. */
static char *log_abort_msg = NULL;
/* An assert to use in logging functions that does not call recursively
* into our logging functions (since that might lead to a loop). */
#define assert_raw(expr) \
do { \
if (_unlikely_(!(expr))) { \
fputs(#expr "\n", stderr); \
abort(); \
} \
} while (false)
static void log_close_console(void) {
if (console_fd < 0)
@ -531,7 +541,7 @@ static int log_do_header(
isempty(extra) ? "" : extra,
isempty(extra) ? "" : "\n",
program_invocation_short_name);
assert((size_t) r < size);
assert_raw((size_t) r < size);
return 0;
}
@ -583,7 +593,7 @@ int log_dispatch_internal(
const char *extra,
char *buffer) {
assert(buffer);
assert_raw(buffer);
if (error < 0)
error = -error;