[committed] libstdc++: Simplify print_raw function for debug assertions

[Jonathan Wakely via Gcc-patches]

Tested powerpc64le-linux. Pushed to trunk.

-- >8 --

Replace two uses of print_raw where it's clearer to just use fprintf
directly. Then the only remaining use of print_raw is as the print_func
argument of pretty_print. When called by pretty_print the count is
either a positive integer or -1, so we can simplify print_raw itself.

Remove the default argument, because it's never used. Remove the check
for nbc == 0, which never happens (but would be harmless if it did).
Replace the conditional expression with a single call to fprintf, using
INT_MAX as the maximum length.

libstdc++-v3/ChangeLog:

        * src/c++11/debug.cc (print_raw): Simplify.
        (print_word): Print indentation by calling fprintf directly.
        (_Error_formatter::_M_error): Print unindented string by calling
        fprintf directly.
---
 libstdc++-v3/src/c++11/debug.cc | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/libstdc++-v3/src/c++11/debug.cc b/libstdc++-v3/src/c++11/debug.cc
index abc4124c01e..f2b25fbefce 100644
--- a/libstdc++-v3/src/c++11/debug.cc
+++ b/libstdc++-v3/src/c++11/debug.cc
@@ -37,6 +37,7 @@
 #include <cstdlib>     // for std::abort
 #include <cctype>      // for std::isspace.
 #include <cstring>     // for std::strstr.
+#include <climits>     // for INT_MAX
 
 #include <algorithm>   // for std::min.
 
@@ -609,14 +610,11 @@ namespace
     { print_word(ctx, word, Length - 1); }
 
   void
-  print_raw(PrintContext& ctx, const char* str, ptrdiff_t nbc = -1)
+  print_raw(PrintContext& ctx, const char* str, ptrdiff_t nbc)
   {
-    if (nbc != 0)
-      {
-       ctx._M_column += (nbc > 0)
-         ? fprintf(stderr, "%.*s", (int)nbc, str)
-         : fprintf(stderr, "%s", str);
-      }
+    if (nbc == -1)
+      nbc = INT_MAX;
+    ctx._M_column += fprintf(stderr, "%.*s", (int)nbc, str);
   }
 
   void
@@ -645,12 +643,9 @@ namespace
        || (ctx._M_column + visual_length < ctx._M_max_length)
        || (visual_length >= ctx._M_max_length && ctx._M_column == 1))
       {
-       // If this isn't the first line, indent
+       // If this isn't the first line, indent.
        if (ctx._M_column == 1 && !ctx._M_first_line)
-         {
-           const char spacing[PrintContext::_S_indent + 1] = "    ";
-           print_raw(ctx, spacing, PrintContext::_S_indent);
-         }
+         ctx._M_column += fprintf(stderr, "%*c", PrintContext::_S_indent, ' ');
 
        int written = fprintf(stderr, "%.*s", (int)length, word);
 
@@ -1166,7 +1161,7 @@ namespace __gnu_debug
     PrintContext ctx;
     if (_M_file)
       {
-       print_raw(ctx, _M_file);
+       ctx._M_column += fprintf(stderr, "%s", _M_file);
        print_literal(ctx, ":");
        go_to_next_line = true;
       }
-- 
2.37.3