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Alan Mackenzie authored
Fixes debbugs#19206. cc-bytecomp.el (cc-bytecomp-compiling-or-loading): new function which walks the stack to discover whether we're compiling or loading. (cc-bytecomp-is-compiling): Reformulate, and move towards beginning. (cc-bytecomp-is-loading): New defsubst. (cc-bytecomp-setup-environment, cc-bytecomp-restore-environment): Use the above defsubsts. (cc-require-when-compile, cc-bytecomp-defvar) (cc-bytecomp-defun): Simplify conditionals. cc-defs.el (cc-bytecomp-compiling-or-loading): "Borrow" this function from cc-bytecomp.el. (c-get-current-file): Reformulate using the above. (c-lang-defconst): Prevent duplicate entries of file names in a symbol's 'source property. (c-lang-const): Use cc-bytecomp-is-compiling. cc-langs.el (c-make-init-lang-vars-fun): Use cc-bytecomp-is-compiling.
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