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translate-c: Prevent mistranslation of fp literals

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When trying to retrieve 80bit fp values from clang using
getValueAsApproximateDouble we'd eventually hit the ceiling value and
return infinity, an invalid value for a fp literal.

Add some logic to prevent this error and warn the user.

Closes #8602
This commit is contained in:
LemonBoy
2021-04-24 18:42:23 +02:00
parent 4ec6d174ad
commit 7c3896e6cd
4 changed files with 47 additions and 2 deletions
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5
src/zig_clang.cpp
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@@ -2528,6 +2528,11 @@ double ZigClangFloatingLiteral_getValueAsApproximateDouble(const ZigClangFloatin
return casted->getValueAsApproximateDouble();
}
ZigClangAPFloatBase_Semantics ZigClangFloatingLiteral_getRawSemantics(const ZigClangFloatingLiteral *self) {
auto casted = reinterpret_cast<const clang::FloatingLiteral *>(self);
return static_cast<ZigClangAPFloatBase_Semantics>(casted->getRawSemantics());
}
enum ZigClangStringLiteral_StringKind ZigClangStringLiteral_getKind(const struct ZigClangStringLiteral *self) {
auto casted = reinterpret_cast<const clang::StringLiteral *>(self);
return (ZigClangStringLiteral_StringKind)casted->getKind();