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Better error when rustc fails to write output. #2910

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Merged
merged 1 commit into from
Jul 20, 2012
Merged

Better error when rustc fails to write output. #2910

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26 changes: 22 additions & 4 deletions src/rustc/back/link.rs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import libc::{c_int, c_uint};
import libc::{c_int, c_uint, c_char};
import driver::session;
import session::session;
import lib::llvm::llvm;
Expand Down Expand Up @@ -32,6 +32,21 @@ fn llvm_err(sess: session, msg: str) -> ! unsafe {
} else { sess.fatal(msg + ": " + str::unsafe::from_c_str(cstr)); }
}

fn WriteOutputFile(sess:session,
PM: lib::llvm::PassManagerRef, M: ModuleRef,
Triple: *c_char,
// FIXME: When #2334 is fixed, change
// c_uint to FileType
Output: *c_char, FileType: c_uint,
OptLevel: c_int,
EnableSegmentedStacks: bool) {
let result = llvm::LLVMRustWriteOutputFile(
PM, M, Triple, Output, FileType, OptLevel, EnableSegmentedStacks);
if (!result) {
llvm_err(sess, "Could not write output");
}
}

mod write {
fn is_object_or_assembly_or_exe(ot: output_type) -> bool {
if ot == output_type_assembly || ot == output_type_object ||
Expand Down Expand Up @@ -160,7 +175,8 @@ mod write {
sess.targ_cfg.target_strs.target_triple,
|buf_t| {
str::as_c_str(output, |buf_o| {
llvm::LLVMRustWriteOutputFile(
WriteOutputFile(
sess,
pm.llpm,
llmod,
buf_t,
Expand All @@ -181,7 +197,8 @@ mod write {
sess.targ_cfg.target_strs.target_triple,
|buf_t| {
str::as_c_str(output, |buf_o| {
llvm::LLVMRustWriteOutputFile(
WriteOutputFile(
sess,
pm.llpm,
llmod,
buf_t,
Expand All @@ -200,7 +217,8 @@ mod write {
sess.targ_cfg.target_strs.target_triple,
|buf_t| {
str::as_c_str(output, |buf_o| {
llvm::LLVMRustWriteOutputFile(
WriteOutputFile(
sess,
pm.llpm,
llmod,
buf_t,
Expand Down
2 changes: 1 addition & 1 deletion src/rustc/lib/llvm.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -941,7 +941,7 @@ extern mod llvm {
// c_uint to FileType
Output: *c_char, FileType: c_uint,
OptLevel: c_int,
EnableSegmentedStacks: bool);
EnableSegmentedStacks: bool) -> bool;

/** Returns a string describing the last error caused by an LLVMRust*
call. */
Expand Down
7 changes: 6 additions & 1 deletion src/rustllvm/RustWrapper.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,7 @@ extern "C" bool LLVMLinkModules(LLVMModuleRef Dest, LLVMModuleRef Src) {
return true;
}

extern "C" void
extern "C" bool
LLVMRustWriteOutputFile(LLVMPassManagerRef PMR,
LLVMModuleRef M,
const char *triple,
Expand Down Expand Up @@ -107,13 +107,18 @@ LLVMRustWriteOutputFile(LLVMPassManagerRef PMR,
std::string ErrorInfo;
raw_fd_ostream OS(path, ErrorInfo,
raw_fd_ostream::F_Binary);
if (ErrorInfo != "") {
LLVMRustError = ErrorInfo.c_str();
return false;
}
formatted_raw_ostream FOS(OS);

bool foo = Target->addPassesToEmitFile(*PM, FOS, FileType, NoVerify);
assert(!foo);
(void)foo;
PM->run(*unwrap(M));
delete Target;
return true;
}

extern "C" LLVMModuleRef LLVMRustParseAssemblyFile(const char *Filename) {
Expand Down