On Mon, May 18, 2015 at 02:08:21PM +0200, Stefan Roese wrote: > I might have missed something, but I failed to use the escape char '\' > in strings. To pass a printf format string like "foo %d bar\n" via > Kconfig to the code. > > Right now its not possible to use the escape character '\' in Kconfig > string values correctly to e.g. set this string value "test output\n". > The '\n' will be converted to 'n'. > > The current implementation removes some of the '\' chars from the input > string in conf_set_sym_val(). Examples: > > '\' -> '' > '\\' -> '\' > '\\\' -> '\' > '\\\\' -> '\\' > ... > > And then doubles the backslash chars in the output string in > sym_escape_string_value(). Example: > > '\' -> '' -> '' > '\\' -> '\' -> '\\' > '\\\' -> '\' -> '\\' > '\\\\' -> '\\' -> '\\\\' > ... > > As you see in these examples, its impossible to generate a single '\' > charater in the output string as its needed for something like '\n'. > > This patch now changes this behavior to not drop some backslashes in > conf_set_sym_val() and to not add new backslashes in the resulting > output string. Removing the function sym_escape_string_value() > completely as its not needed anymore. > > Signed-off-by: Stefan Roese <s...@denx.de> > Cc: Masahiro Yamada <yamada.masah...@socionext.com> > Cc: Simon Glass <s...@chromium.org> > Reviewed-by: Simon Glass <s...@chromium.org>
This breaks a number of configs such as TZX-Q8-713B7_defconfig: *** Error in `scripts/kconfig/conf': free(): invalid next size (fast): 0x0000000002972420 *** ../scripts/kconfig/Makefile:111: recipe for target 'TZX-Q8-713B7_defconfig' failed -- Tom
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