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[afs-as] Allow debugging arguments after the input file

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Clang may call as with extra debugging arguments after the input file,
e.g. as --64 -o /tmp/hello-617ff5.o /tmp/hello-6b6f52.s -g -gdwarf-4
This commit is contained in:
Tulio Magno Quites Machado Filho
2023-03-28 12:06:23 -03:00
parent c594a58583
commit 5d9c1bc3a3
1 changed files with 18 additions and 4 deletions
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22
src/afl-as.c
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@ -93,7 +93,7 @@ static u8 use_64bit = 0;
static void edit_params(int argc, char **argv) {
u8 *tmp_dir = getenv("TMPDIR"), *afl_as = getenv("AFL_AS");
u32 i;
u32 i, input_index;
#ifdef __APPLE__
@ -142,7 +142,23 @@ static void edit_params(int argc, char **argv) {
as_params[argc] = 0;
for (i = 1; (s32)i < argc - 1; i++) {
/* Find the input file. It's usually located near the end.
Assume there won't be any arguments referring to files after the input
file, e.g. as input.s -o output.o */
for (input_index = argc - 1; input_index > 0; input_index--) {
input_file = argv[input_index];
/* Clang may add debug arguments after the input file. */
if (strncmp(input_file, "-g", 2)) break;
}
if (input_index == 0)
FATAL("Could not find input file (not called through afl-gcc?)");
for (i = 1; (s32)i < argc; i++) {
if (i == input_index) continue;
if (!strcmp(argv[i], "--64")) {
@ -194,8 +210,6 @@ static void edit_params(int argc, char **argv) {
#endif /* __APPLE__ */
input_file = argv[argc - 1];
if (input_file[0] == '-') {
if (!strcmp(input_file + 1, "-version")) {