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add a compile error note when C import fails and not linking libc

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closes #558
This commit is contained in:
Andrew Kelley 2019-02-25 19:31:30 -05:00
parent 0f54728cf0
commit 3ca861c7dd
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GPG Key ID: 7C5F548F728501A9
2 changed files with 15 additions and 0 deletions
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4
src/ir.cpp
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@ -18705,6 +18705,10 @@ static IrInstruction *ir_analyze_instruction_c_import(IrAnalyze *ira, IrInstruct
if (errors.length > 0) {
ErrorMsg *parent_err_msg = ir_add_error_node(ira, node, buf_sprintf("C import failed"));
if (ira->codegen->libc_link_lib == nullptr) {
add_error_note(ira->codegen, parent_err_msg, node,
buf_sprintf("libc headers not available; compilation does not link against libc"));
}
for (size_t i = 0; i < errors.length; i += 1) {
ErrorMsg *err_msg = errors.at(i);
err_msg_add_note(parent_err_msg, err_msg);

11
test/compile_errors.zig
View File

@ -1,6 +1,17 @@
const tests = @import("tests.zig");
pub fn addCases(cases: *tests.CompileErrorContext) void {
cases.addTest(
"libc headers note",
\\const c = @cImport(@cInclude("stdio.h"));
\\export fn entry() void {
\\ c.printf("hello, world!\n");
\\}
,
".tmp_source.zig:1:11: error: C import failed",
".tmp_source.zig:1:11: note: libc headers not available; compilation does not link against libc",
);
cases.addTest(
"comptime vector overflow shows the index",
\\comptime {