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gccrs: Fix ICE in no input file #4240

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gccrs: Fix ICE in no input file #4240

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4 changes: 4 additions & 0 deletions gcc/rust/rust-lang.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,10 @@ grs_langhook_post_options (const char **pfilename ATTRIBUTE_UNUSED)
{
// can be used to override other options if required

// check for input file
if (!*pfilename && num_in_fnames == 0)
*pfilename = "-";

// satisfies an assert in init_excess_precision in toplev.cc
if (flag_excess_precision /*_cmdline*/ == EXCESS_PRECISION_DEFAULT)
flag_excess_precision /*_cmdline*/ = EXCESS_PRECISION_STANDARD;
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6 changes: 6 additions & 0 deletions gcc/rust/rust-session-manager.cc
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Expand Up @@ -399,6 +399,12 @@ Session::enable_dump (std::string arg)
void
Session::handle_input_files (int num_files, const char **files)
{
static const char *stdin_file[] = {"-"};
if (num_files == 0)
{
files = stdin_file;
num_files = 1;
}
if (num_files != 1)
rust_fatal_error (UNDEF_LOCATION,
"only one file may be specified on the command line");
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