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"fixed" symbol multiply defined problems with LTO

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This commit is contained in:
van Hauser
2020-03-08 18:20:28 +01:00
parent 9f7bcca91e
commit 8ff0161d58
2 changed files with 51 additions and 3 deletions
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18
llvm_mode/afl-ld.c
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@ -215,9 +215,12 @@ static void edit_params(int argc, char** argv) {
link_params[link_param_cnt++] = linked_file;
opt_params[0] = alloc_printf("%s/%s", LLVM_BINDIR, "opt");
if (getenv("AFL_DONT_OPTIMIZE") == NULL)
if (getenv("AFL_DONT_OPTIMIZE") == NULL) {
opt_params[opt_param_cnt++] = "-O3";
else
opt_params[opt_param_cnt++] = "--polly";
} else
opt_params[opt_param_cnt++] = "-O0";
// opt_params[opt_param_cnt++] = "-S"; // only when debugging
opt_params[opt_param_cnt++] = linked_file; // input: .ll file
@ -599,7 +602,16 @@ int main(int argc, char** argv) {
if (pid < 0) PFATAL("fork() failed");
if (waitpid(pid, &status, 0) <= 0) PFATAL("waitpid() failed");
if (WEXITSTATUS(status) != 0) exit(WEXITSTATUS(status));
if (WEXITSTATUS(status) != 0) {
SAYF(bSTOP RESET_G1 CURSOR_SHOW cRST cLRD \
"\n[-] PROGRAM ABORT : " cRST);
SAYF( "llvm-link failed, if this is because of a \"linking globals\n"
" named '...': symbol multiply defined\" error then there is nothing we can do -\n"
"llvm-link is missing an important feature :-(\n\n");
exit(WEXITSTATUS(status));
}
/* then we perform an optimization on the collected objects files */
if (!be_quiet)