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prevent non-export symbols from clobbering builtins

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closes #1263
This commit is contained in:
Andrew Kelley 2018-07-19 10:47:17 -04:00
parent fd3a41dadc
commit a9f0681f85
1 changed files with 31 additions and 0 deletions
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31
src/codegen.cpp
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@ -60,6 +60,33 @@ PackageTableEntry *new_anonymous_package(void) {
return new_package("", "");
}
static const char *symbols_that_llvm_depends_on[] = {
"memcpy",
"memset",
"sqrt",
"powi",
"sin",
"cos",
"pow",
"exp",
"exp2",
"log",
"log10",
"log2",
"fma",
"fabs",
"minnum",
"maxnum",
"copysign",
"floor",
"ceil",
"trunc",
"rint",
"nearbyint",
"round",
// TODO probably all of compiler-rt needs to go here
};
CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out_type, BuildMode build_mode,
Buf *zig_lib_dir)
{
@ -94,6 +121,10 @@ CodeGen *codegen_create(Buf *root_src_path, const ZigTarget *target, OutType out
g->want_h_file = (out_type == OutTypeObj || out_type == OutTypeLib);
buf_resize(&g->global_asm, 0);
for (size_t i = 0; i < array_length(symbols_that_llvm_depends_on); i += 1) {
g->external_prototypes.put(buf_create_from_str(symbols_that_llvm_depends_on[i]), nullptr);
}
if (root_src_path) {
Buf *src_basename = buf_alloc();
Buf *src_dir = buf_alloc();