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* [glibc] Build raise with -fasynchronous-unwind-tables.
@ 2020-01-24 17:24 Joseph Myers
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From: Joseph Myers @ 2020-01-24 17:24 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=352bb99754ae7c83ff1b974f9c52244e974c9410
commit 352bb99754ae7c83ff1b974f9c52244e974c9410
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Jan 24 17:23:47 2020 +0000
Build raise with -fasynchronous-unwind-tables.
In testing glibc for Arm and MIPS, I see:
FAIL: misc/tst-sigcontext-get_pc
If this test - backtracing through a call to raise - is valid, then
raise needs to be built with -fasynchronous-unwind-tables (as the test
itself is) to have the required unwind information for that
backtracing to work. Adding that option, which this patch does,
causes the test for pass for Arm. For MIPS, the test still does not
pass (the backtrace has an address that is 2 bytes after the "address
in signal handler", for unknown reasons), although the patch allows a
longer backtrace to be produced.
Diff:
---
signal/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/signal/Makefile b/signal/Makefile
index 7da67de..37de438 100644
--- a/signal/Makefile
+++ b/signal/Makefile
@@ -52,6 +52,7 @@ tests := tst-signal tst-sigset tst-sigsimple tst-raise tst-sigset2 \
include ../Rules
+CFLAGS-raise.c += -fasynchronous-unwind-tables
CFLAGS-sigpause.c += -fexceptions
CFLAGS-sigsuspend.c += -fexceptions -fasynchronous-unwind-tables
CFLAGS-sigtimedwait.c += -fexceptions -fasynchronous-unwind-tables
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