[GR-17457] Do not depend on qsort() internals in the C-ext backtraces test

PullRequest: truffleruby/3233

Author: eregon

test/truffle/cexts/backtraces/bin/backtraces

@@ -5,9 +5,9 @@ TEST_DIR = File.expand_path("../..", __FILE__)
 SRC_DIR = File.expand_path("../../../../../..", __FILE__)
 
 def puts_backtrace(backtrace)
-  puts backtrace.gsub(Truffle::Boot.ruby_home, '')
-                .gsub(TEST_DIR, '').gsub(SRC_DIR, '')
+  puts backtrace.gsub(Truffle::Boot.ruby_home, '').gsub(TEST_DIR, '').gsub(SRC_DIR, '')
                 .gsub(%r{(/cext\.rb|/cext_ruby\.rb|/c/cext/\w+\.c|/qsort\.c|<internal:core> .+\.rb):(\d+:)?}, '\1:n:')
+                .gsub(%r{.+/qsort\.c:n:in `(?!qsort)\w+'\n}, '')
 end
 
 puts "Test error in Ruby => C ext support => Ruby"

test/truffle/cexts/backtraces/expected.txt

@@ -33,8 +33,6 @@ Test error in the callback to the Sulong-instrinsified qsort()
 /bin/backtraces:74:in `block in <main>': error from Ruby called from instrinsified qsort() (RuntimeError)
 	from /lib/truffle/truffle/cext.rb:n:in `rb_funcall'
 	from /ext/backtraces/backtraces.c:17:in `compare_function'
-	from com.oracle.truffle.llvm.libraries.bitcode/src/qsort.c:n:in `sift'
-	from com.oracle.truffle.llvm.libraries.bitcode/src/qsort.c:n:in `trinkle'
 	from com.oracle.truffle.llvm.libraries.bitcode/src/qsort.c:n:in `qsort'
 	from /ext/backtraces/backtraces.c:25:in `call_qsort'
 	from /lib/truffle/truffle/cext_ruby.rb:n:in `qsort'