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MINOR: debug: call backtrace() once upon startup

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Calling backtrace() will access libgcc at runtime. We don't want to do
it after the chroot, so let's perform a first call to have it ready in
memory for later use.
This commit is contained in:
Willy Tarreau 2020-03-04 06:01:40 +01:00
parent f5b4e064dc
commit 0214b45a61
1 changed files with 8 additions and 0 deletions
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8
src/debug.c
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@ -764,6 +764,14 @@ static int init_debug()
{ {
struct sigaction sa; struct sigaction sa;
#ifdef USE_BACKTRACE
/* calling backtrace() will access libgcc at runtime. We don't want to
* do it after the chroot, so let's perform a first call to have it
* ready in memory for later use.
*/
void *callers[1];
backtrace(callers, sizeof(callers)/sizeof(*callers));
#endif
sa.sa_handler = NULL; sa.sa_handler = NULL;
sa.sa_sigaction = debug_handler; sa.sa_sigaction = debug_handler;
sigemptyset(&sa.sa_mask); sigemptyset(&sa.sa_mask);