The following patch is a lazy attempt at reporting current_pass
when ICEing as for example the backtraces are not exactly helpful
in locating the problem when the ICE occurs during the verification phase.
Tested with a forced ICE which now looks like:
t.c: In function ?fn1?:
cc1: note: executing pass `ssa'
t.c:14:1: internal compiler error: in verify_ssa, at tree-ssa.c:939
we can't emit the note after the ICE (because the emitting a DK_ICE
diagnostic will already terminate the compiler).
Not otherwise tested.
Comments?
(of course this is to shift the blame faster without having to
reproduce a bug...)
Thanks,
Richard.
2014-11-07 Richard Biener <rguent...@suse.de>
* diagnostic.c: Include tree-pass.h.
(internal_error): Report pass we are executing currently.
Index: gcc/diagnostic.c
===================================================================
--- gcc/diagnostic.c (revision 217214)
+++ gcc/diagnostic.c (working copy)
@@ -32,6 +32,7 @@ along with GCC; see the file COPYING3.
#include "backtrace.h"
#include "diagnostic.h"
#include "diagnostic-color.h"
+#include "tree-pass.h" // for current_pass
#include <new> // For placement new.
@@ -1173,6 +1174,9 @@ internal_error (const char *gmsgid, ...)
diagnostic_info diagnostic;
va_list ap;
+ if (current_pass && current_pass->name)
+ inform (UNKNOWN_LOCATION, "executing pass `%s'", current_pass->name);
+
va_start (ap, gmsgid);
diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_ICE);
report_diagnostic (&diagnostic);
