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Red Hat Bugzilla – Attachment 890516 Details for
Bug 1082370
-shared -g3 can trigger terrabyte+ mallocs() in ld
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[patch]
Check for pathalogical debug strings
compress.c.patch (text/plain), 962 bytes, created by
Nick Clifton
on 2014-04-28 14:50:01 UTC
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Description:
Check for pathalogical debug strings
Filename:
MIME Type:
Creator:
Nick Clifton
Created:
2014-04-28 14:50:01 UTC
Size:
962 bytes
patch
obsolete
>diff --git a/bfd/compress.c b/bfd/compress.c >index 5a289e6..20eef95 100644 >--- a/bfd/compress.c >+++ b/bfd/compress.c >@@ -24,6 +24,7 @@ > #ifdef HAVE_ZLIB_H > #include <zlib.h> > #endif >+#include "safe-ctype.h" > > #ifdef HAVE_ZLIB_H > static bfd_boolean >@@ -303,6 +304,15 @@ bfd_is_section_compressed (bfd *abfd, sec_ptr sec) > compressed = (bfd_get_section_contents (abfd, sec, compressed_buffer, 0, 12) > && CONST_STRNEQ ((char*) compressed_buffer, "ZLIB")); > >+ /* Check for the pathalogical case of a debug string section that >+ contains the string ZLIB.... as the first entry. We assume that >+ no uncompressed .debug_str section would ever be big enough to >+ have the first byte of its (big-endian) size be non-zero. */ >+ if (compressed >+ && strcmp (sec->name, ".debug_str") == 0 >+ && ISPRINT (compressed_buffer[4])) >+ compressed = FALSE; >+ > /* Restore compress_status. */ > sec->compress_status = saved; > return compressed;
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