[binutils-gdb] Use std::string in coff-pe-read.c

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0f34437ba0f5acab1fcb05630d88057402abbfeb

commit 0f34437ba0f5acab1fcb05630d88057402abbfeb
Author: Tom Tromey <tromey@adacore.com>
Date:   Tue Apr 19 07:33:09 2022 -0600

    Use std::string in coff-pe-read.c
    
    coff-pe-read.c uses xsnprintf and alloca, but using std::string is
    better, and just as easy.  In general I think alloca is something to
    be avoided, and unbounded uses especially so.

Diff:
---
 gdb/coff-pe-read.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/gdb/coff-pe-read.c b/gdb/coff-pe-read.c
index ae4ca5435b6..5bf0e2dc7f0 100644
--- a/gdb/coff-pe-read.c
+++ b/gdb/coff-pe-read.c
@@ -178,16 +178,13 @@ add_pe_forwarded_sym (minimal_symbol_reader &reader,
   struct bound_minimal_symbol msymbol;
   enum minimal_symbol_type msymtype;
   int forward_dll_name_len = strlen (forward_dll_name);
-  int forward_func_name_len = strlen (forward_func_name);
-  int forward_len = forward_dll_name_len + forward_func_name_len + 2;
-  char *forward_qualified_name = (char *) alloca (forward_len);
   short section;
 
-  xsnprintf (forward_qualified_name, forward_len, "%s!%s", forward_dll_name,
-	     forward_func_name);
+  std::string forward_qualified_name = string_printf ("%s!%s",
+						      forward_dll_name,
+						      forward_func_name);
 
-
-  msymbol = lookup_bound_minimal_symbol (forward_qualified_name);
+  msymbol = lookup_bound_minimal_symbol (forward_qualified_name.c_str ());
 
   if (!msymbol.minsym)
     {
@@ -195,7 +192,7 @@ add_pe_forwarded_sym (minimal_symbol_reader &reader,
 
       for (i = 0; i < forward_dll_name_len; i++)
 	forward_qualified_name[i] = tolower (forward_qualified_name[i]);
-      msymbol = lookup_bound_minimal_symbol (forward_qualified_name);
+      msymbol = lookup_bound_minimal_symbol (forward_qualified_name.c_str ());
     }
 
   if (!msymbol.minsym)