[gcc/devel/ranger] Fix check_effective_target_sigsetjmp for glibc targets.

[Aldy Hernandez]

https://gcc.gnu.org/g:a950bb6e95236bb60ec17cda36763945d3d0a714

commit a950bb6e95236bb60ec17cda36763945d3d0a714
Author: Sandra Loosemore <sandra@codesourcery.com>
Date:   Thu Apr 2 13:37:58 2020 -0700

    Fix check_effective_target_sigsetjmp for glibc targets.
    
    2020-04-02  Sandra Loosemore  <sandra@codesourcery.com>
    
            gcc/testsuite/
            * lib/target-supports.exp (check_effective_target_sigsetjmp): Test
            for __sigsetjmp as well as sigsetjmp.

Diff:
---
 gcc/testsuite/ChangeLog               | 5 +++++
 gcc/testsuite/lib/target-supports.exp | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 050cecd6159..cd8d7e1548d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2020-04-02  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* lib/target-supports.exp (check_effective_target_sigsetjmp): Test
+	for __sigsetjmp as well as sigsetjmp.
+
 2020-04-02  Fritz Reese  <foreese@gcc.gnu.org>
 
 	PR fortran/85982
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 3654e7bc232..0dfe3ae0651 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -9036,9 +9036,15 @@ proc check_effective_target_stpcpy {} {
 }
 
 # Returns 1 if "sigsetjmp" is available on the target system.
+# Also check if "__sigsetjmp" is defined since that's what glibc
+# uses.
 
 proc check_effective_target_sigsetjmp {} {
-    return [check_function_available "sigsetjmp"]
+    if { [check_function_available "sigsetjmp"]
+         || [check_function_available "__sigsetjmp"] } {
+	return 1
+    }
+    return 0
 }
 
 # Check whether the vectorizer tests are supported by the target and