[committed][testsuite] Require c99_runtime to run builtin-sprintf.c

Hi, On nvptx, I run into an execution failure in test-case gcc.dg/tree-ssa/builtin-sprintf.c because the test-case uses the 'hh' modifier. The port uses newlib, which does by default not support that modifier. There's a configure option --enable-newlib-io-c99-formats to enable this support, but t

[committed][testsuite] Require c99_runtime to run builtin-sprintf.c

Hi, On nvptx, I run into an execution failure in test-case gcc.dg/tree-ssa/builtin-sprintf.c because the test-case uses the 'hh' modifier. The port uses newlib, which does by default not support that modifier. There's a configure option --enable-newlib-io-c99-formats to enable this support, but t