panic token start larger than end index

[ianic]

Reduction of raspberry pico sdk to:

extern struct stats_ lwip_stats;

#define STATS_INC_USED(x, y, type)                                             \
    do {                                                                       \
        lwip_stats.x.used = (type)(lwip_stats.x.used + y);                     \
        if (lwip_stats.x.max < lwip_stats.x.used) {                            \
            lwip_stats.x.max = lwip_stats.x.used;                              \
        }                                                                      \
    } while (0)
#define STATS_GET(x) lwip_stats.x

results in panic:

$ ../../translate-c/zig-out/bin/translate-c src/regression4.h
thread 12348 panic: start index 556 is larger than end index 0
/home/ianic/Code/translate-c/src/MacroTranslator.zig:70:21: 0x1377cc6 in tokSlice (main.zig)
    return mt.source[tok.start..tok.end];
                    ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:1136:47: 0x181d07c in parseCPostfixExprInner (main.zig)
                const field_name = mt.tokSlice();
                                              ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:1102:45: 0x180ea5f in parseCPostfixExpr (main.zig)
    var node = try mt.parseCPostfixExprInner(scope, type_name);
                                            ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:1320:36: 0x180fe9c in parseCUnaryExpr (main.zig)
    return try mt.parseCPostfixExpr(scope, null);
                                   ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:888:30: 0x18041ee in parseCCastExpr (main.zig)
    return mt.parseCUnaryExpr(scope);
                             ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:830:37: 0x17fd2d1 in parseCMulExpr (main.zig)
    var node = try mt.parseCCastExpr(scope);
                                    ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:809:36: 0x17f9bf1 in parseCAddSubExpr (main.zig)
    var node = try mt.parseCMulExpr(scope);
                                   ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:788:39: 0x17f36b1 in parseCShiftExpr (main.zig)
    var node = try mt.parseCAddSubExpr(scope);
                                      ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:755:38: 0x17e9aa1 in parseCRelExpr (main.zig)
    var node = try mt.parseCShiftExpr(scope);
                                     ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:734:36: 0x17d3bc1 in parseCEqExpr (main.zig)
    var node = try mt.parseCRelExpr(scope);
                                   ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:724:35: 0x1791091 in parseCBitAndExpr (main.zig)
    var node = try mt.parseCEqExpr(scope);
                                  ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:714:39: 0x1740d51 in parseCBitXorExpr (main.zig)
    var node = try mt.parseCBitAndExpr(scope);
                                      ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:704:39: 0x16f5261 in parseCBitOrExpr (main.zig)
    var node = try mt.parseCBitXorExpr(scope);
                                      ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:694:38: 0x165eba1 in parseCAndExpr (main.zig)
    var node = try mt.parseCBitOrExpr(scope);
                                     ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:684:36: 0x1569721 in parseCOrExpr (main.zig)
    var node = try mt.parseCAndExpr(scope);
                                   ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:674:37: 0x14841a1 in parseCCondExpr (main.zig)
    const node = try mt.parseCOrExpr(scope);
                                    ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:236:39: 0x13761d3 in parseCExpr (main.zig)
    const node = try mt.parseCCondExpr(&block_scope.base);
                                      ^
/home/ianic/Code/translate-c/src/MacroTranslator.zig:89:35: 0x12cf320 in transFnMacro (main.zig)
    const expr = try mt.parseCExpr(scope);
                                  ^
/home/ianic/Code/translate-c/src/Translator.zig:4065:42: 0x124e7df in transMacros (main.zig)
            macro_translator.transFnMacro()
                                         ^
/home/ianic/Code/translate-c/src/Translator.zig:209:31: 0x12538c4 in translate (main.zig)
    try translator.transMacros();
                              ^
/home/ianic/Code/translate-c/src/main.zig:192:50: 0x11edd0f in translate (main.zig)
    const rendered_zig = try Translator.translate(.{
                                                 ^
/home/ianic/Code/translate-c/src/main.zig:57:14: 0x11f00f2 in main (main.zig)
    translate(&driver, &toolchain, args) catch |err| switch (err) {
             ^
/home/ianic/.cache/zig/p/N-V-__8AALr0lhQik6cxQmTLe98qXRuSaa9WIHX4CLmuGNYN/lib/std/start.zig:622:29: 0x11cf32c in callMain (std.zig)
            return root.main();
                            ^
/home/ianic/.cache/zig/p/N-V-__8AALr0lhQik6cxQmTLe98qXRuSaa9WIHX4CLmuGNYN/lib/std/start.zig:232:5: 0x11cee01 in _start (std.zig)
    asm volatile (switch (native_arch) {
    ^
zsh: IOT instruction (core dumped)  ../../translate-c/zig-out/bin/translate-c src/regression4.h

Using translate-c built from this repo.

[Vexu]

Fixed in #204