The following fixes duplicate temporary file usage by lto-wrapper with -save-temps.
Bootstrapped / tested on x86_64-unknown-linux-gnu, applied. Richard. 2019-05-07 Richard Biener <rguent...@suse.de> PR lto/90369 * lto-wrapper.c (debug_objcopy): Use the original filename including archive offset for the filename used for -save-temps. Index: gcc/lto-wrapper.c =================================================================== --- gcc/lto-wrapper.c (revision 270909) +++ gcc/lto-wrapper.c (working copy) @@ -1044,6 +1044,7 @@ debug_objcopy (const char *infile, bool int err; const char *p; + const char *orig_infile = infile; off_t inoff = 0; long loffset; int consumed; @@ -1080,9 +1081,9 @@ debug_objcopy (const char *infile, bool if (save_temps) { - outfile = (char *) xmalloc (strlen (infile) + outfile = (char *) xmalloc (strlen (orig_infile) + sizeof (".debug.temp.o") + 1); - strcpy (outfile, infile); + strcpy (outfile, orig_infile); strcat (outfile, ".debug.temp.o"); } else