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Apparently, some indentation changed between versions 4.7.2 and 4.7.3 of GCC.
BusyBox patch "does not use the location information, but instead treats a hunk
as a sort of regex" (BusyBox 1.21.0 editors/patch.c:209). It ignores line
numbers and relies on context matching to find hunks to patch. Therefore,
changes to the context in the original file cause BusyBox patch to fail to apply
a hunk. Fuzz is fatal.
A patch needs to be refreshed when a new upstream version modifies its context.
Before:
/usr/src/gcc-4.7_4.7.3+sip1-1/tmp/src # patch -N -p 1 -u -i ../../patches/01_allow-more-dirs-to-be-configured.patch
patching file gcc/gcc.c
Hunk 2 FAILED 3688/3690.
PREFIX_PRIORITY_LAST, 0, 0);
}
+ add_prefix (&exec_prefixes,
+ concat (user_tooldir_prefix, dir_separator_str, NULL),
+ 0, PREFIX_PRIORITY_LAST, 0, 0);
+ add_prefix (&startfile_prefixes,
+ concat (user_tooldir_prefix, dir_separator_str, NULL),
+ 0, PREFIX_PRIORITY_LAST, 0, 0);
+ add_prefix (&include_prefixes,
+ concat (user_tooldir_prefix, dir_separator_str, NULL),
+ 0, PREFIX_PRIORITY_LAST, 0, 0);
+
/* COMPILER_PATH and LIBRARY_PATH have values
that are lists of directory names with colons. */
patching file gcc/Makefile.in
patching file libmudflap/Makefile.am
patching file libmudflap/Makefile.in
patching file libquadmath/Makefile.am
patching file libquadmath/Makefile.in
patching file libssp/Makefile.am
patching file libssp/Makefile.in
patching file libstdc++-v3/Makefile.am
patching file libstdc++-v3/Makefile.in
patching file Makefile.def
patching file Makefile.in
After:
/usr/src/gcc-4.7_4.7.3+sip1-1/tmp/src # patch -N -p 1 -u -i ../../patches/01_allow-more-dirs-to-be-configured.patch
patching file gcc/gcc.c
patching file gcc/Makefile.in
patching file libmudflap/Makefile.am
patching file libmudflap/Makefile.in
patching file libquadmath/Makefile.am
patching file libquadmath/Makefile.in
patching file libssp/Makefile.am
patching file libssp/Makefile.in
patching file libstdc++-v3/Makefile.am
patching file libstdc++-v3/Makefile.in
patching file Makefile.def
patching file Makefile.in
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