re PR middle-end/53510 (OOM while compile some code)

	PR middle-end/53510
	* input.c (read_line): Use XRESIZEVEC instead of XNEWVEC
	to avoid leaking memory.  No need to handle memory allocation
	failure.  Double string_len on each reallocation instead of
	adding 2.
	* gcov.c (read_line): Likewise.

From-SVN: r187952

1 files changed, 2 insertions, 9 deletions

diff --git a/gcc/gcov.c b/gcc/gcov.c
index 9707111..d482399 100644
--- a/gcc/gcov.c
+++ b/gcc/gcov.c
@@ -2219,15 +2219,8 @@ read_line (FILE *file)
 	  return string;
 	}
       pos += len;
-      ptr = XNEWVEC (char, string_len * 2);
-      if (ptr)
-	{
-	  memcpy (ptr, string, pos);
-	  string = ptr;
-	  string_len += 2;
-	}
-      else
-	pos = 0;
+      string = XRESIZEVEC (char, string, string_len * 2);
+      string_len *= 2;
     }
       
   return pos ? string : NULL;