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

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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
This commit is contained in:
Jakub Jelinek 2012-05-29 13:34:38 +02:00 committed by Jakub Jelinek
parent 4f7f7aca35
commit 92b05e72ea
3 changed files with 14 additions and 19 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2012-05-29 Jakub Jelinek <jakub@redhat.com>
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.
2012-05-29 Hans-Peter Nilsson <hp@axis.com>
* config/cris/cris.h (TARGET_HAS_BREAK, TARGET_TRAP_USING_BREAK8):

11
gcc/gcov.c
View File

@ -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;

13
gcc/input.c
View File

@ -1,5 +1,5 @@
/* Data and functions related to line maps and input files.
Copyright (C) 2004, 2007, 2008, 2009, 2010, 2011
Copyright (C) 2004, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
This file is part of GCC.
@ -105,15 +105,8 @@ 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;