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init.c (__gnat_error_handler): Cast reason to int.

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* init.c (__gnat_error_handler): Cast reason to int.
	(__gnat_install_handler): Explain sa_sigaction use.

From-SVN: r176870
This commit is contained in:
Rainer Orth 2011-07-28 13:40:51 +00:00 • committed by Rainer Orth
parent 40b9321d84
commit 6da2ca7d77
2 changed files with 15 additions and 2 deletions
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5
gcc/ada/ChangeLog
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@ -1,3 +1,8 @@
2011-07-28 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* init.c (__gnat_error_handler): Cast reason to int.
(__gnat_install_handler): Explain sa_sigaction use.
2011-07-24 Eric Botcazou <ebotcazou@adacore.com>
* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Subprogram_Type>: If the

12
gcc/ada/init.c
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@ -787,7 +787,11 @@ extern struct Exception_Data _abort_signal;
static void
__gnat_error_handler (int sig, siginfo_t *reason, void *uc ATTRIBUTE_UNUSED)
{
int code = reason == NULL ? 0 : reason->si_code;
/* This handler is installed with SA_SIGINFO cleared, but there's no
prototype for the resulting alternative three-argument form, so we
have to hack around this by casting reason to the int actually
passed. */
int code = (int) reason;
struct Exception_Data *exception;
const char *msg;
@ -872,7 +876,11 @@ __gnat_install_handler (void)
/* Setup signal handler to map synchronous signals to appropriate
exceptions. Make sure that the handler isn't interrupted by another
signal that might cause a scheduling event! */
signal that might cause a scheduling event!
The handler is installed with SA_SIGINFO cleared, but there's no
C++ prototype for the three-argument form, so fake it by using
sa_sigaction and casting the arguments instead. */
act.sa_sigaction = __gnat_error_handler;
act.sa_flags = SA_NODEFER + SA_RESTART;