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With profiledbootstrap and --with-build-config=bootstrap-lto, linemap_add may create a macro map when we run out of line map space. This patch changes start_location to UNKNOWN_LOCATION (0) in this case. Tested with profiledbootstrap and --with-build-config=bootstrap-lto on Linux/x86-64. PR bootstrap/86872 * line-map.c (pure_location_p): Return true if linemap_lookup returns NULL. (linemap_add): Set start_location to 0 if we run out of line map space. From-SVN: r263845
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