From b4ffb2d9498560557821714e2d4651279dd6817c Mon Sep 17 00:00:00 2001
From: _ov4 <ov4@ov4.org>
Date: Wed, 21 Oct 2026 14:03:31 +0000
Subject: feat(diagnostics): print source diagnostics in gcc file:line: layout

Lexer, parser, driver and codegen diagnostics now read
"<path>:<line>: error: <message>" instead of "error: <message> at line N
in <path>". The path is always printed as given on the command line.
Call sites pass the bare message to cps::sourceError/sourceWarning, which
carry printf format checking; reportError routes through the same helper.

The suite iii harness parses the new layout and matches the reason
against the message only. iii/template-class-pack-field passed only
because its reason regex matched the case path, so it is now
case-insensitive.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 include/cps/FunctionGen.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include/cps/FunctionGen.h')

diff --git a/include/cps/FunctionGen.h b/include/cps/FunctionGen.h
index a50e70b..a176e84 100644
--- a/include/cps/FunctionGen.h
+++ b/include/cps/FunctionGen.h
@@ -72,7 +72,7 @@ private:
     IdentifierMap<SymbolInfo> &Symbols;
     bool &HadError;
     int &DiagnosticLine;
-    void reportError(const char *Fmt, ...);
+    __attribute__((format(printf, 2, 3))) void reportError(const char *Fmt, ...);
 
     IdentifierMap<std::deque<FuncSig>> Signatures;
     IdentifierMap<std::pair<std::string, size_t>> LinkIndex;
-- 
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