rs6000: Fix pr18096-1.c test

For the big stack frame in the test GCC used to say

pr18096-1.c:7:6: error: total size of local objects too large

but now it says

pr18096-1.c:7:6: error: total size of local objects 2147483647 exceeds maximum 2147483392

Let's just allow both in the test.


gcc/testsuite/
	* gcc.target/powerpc/pr18096-1.c: Allow an error message that says
	"exceeds" instead of just one that talks about "too large".

From-SVN: r269770

gcc/testsuite/ChangeLog

+2019-03-18  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* gcc.target/powerpc/pr18096-1.c: Allow an error message that says
+	"exceeds" instead of just one that talks about "too large".
+
 2019-03-18  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* gcc.target/aarch64/sve/cost_model_1.c: New test.

gcc/testsuite/gcc.target/powerpc/pr18096-1.c

@@ -4,7 +4,7 @@
 
 void f(char*);
 
-void mkcatdefs(char *fname) /* { dg-error "too large" "stack frame too large" } */
+void mkcatdefs(char *fname) /* { dg-error "too large|exceeds" "stack frame too large" } */
 {
   char line [2147483647];
   f(line);