whatcanGOwrong

go/pkg/mod/github.com/go-delve/delve@v1.23.0/_fixtures/issue2319/README.txt

@@ -0,0 +1,57 @@
+
+Note:
+-----
+
+cfile-linux-amd64.syso was generated from the C source file that appears below.
+
+Build with Clang version 10:
+
+ $ clang-10 -O -gdwarf-5 -c cfile.c -o cfile.syso
+
+The DWARF of interest is for the function "qtop". Triggering the bug
+requires that the source file in question appears as the first item
+in the DWARF line table file section, e.g.
+
+$ llvm-dwarfdump-10 --debug-line cfile.syso
+....
+standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0
+standard_opcode_lengths[DW_LNS_set_isa] = 1
+include_directories[  0] = "/ssd2/go1/src/tmp/dlvbug"
+file_names[  0]:
+           name: "cfile.c"
+      dir_index: 0
+   md5_checksum: ...
+
+
+// ------------------------begin source code for cfile.c----------------
+
+#include <stdlib.h>
+#include <string.h>
+
+int glob = 99;
+
+inline int qleaf(int lx, int ly, int *lv)
+{
+  lv[lx&3] += 3;
+  return lv[ly&3];
+}
+
+int qmid(int mx, int my, int *lv, int *mv)
+{
+  mv[mx&3] += qleaf(mx, my, lv);
+  return mv[my&3];
+}
+
+int qtop(int mx, int my)
+{
+  int mv[64], lv[66], n = (mx < 64 ? 64 : mx);
+
+  memset(&mv[0], 9, sizeof(mv));
+  memset(&lv[0], 11, sizeof(mv));
+  return qmid(mx, my, lv, mv) + qleaf(mx, my, lv);
+}
+
+void Cfunc(int x) {
+  glob += qtop(x, 43);
+}
+

go/pkg/mod/github.com/go-delve/delve@v1.23.0/_fixtures/issue2319/asm-linux-amd64.s

@@ -0,0 +1,5 @@
+
+#include "textflag.h"
+
+TEXT ·cfunc(SB),$0
+        JMP Cfunc(SB)

go/pkg/mod/github.com/go-delve/delve@v1.23.0/_fixtures/issue2319/main.go

@@ -0,0 +1,7 @@
+package main
+
+func cfunc()
+
+func main() {
+	cfunc()
+}