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-rw-r--r--ChangeLog6
-rw-r--r--debug.c17
2 files changed, 23 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index b8397f5c..a7a8be63 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-11-14 John Haque <j.eh@mchsi.com>
+
+ * debug.c (set_breakpoint_at): Fix problem with setting
+ breakpoints in a switch statement. Thanks to Giorgio Palandri
+ <giorgio.palandri@gmail.com> for the bug report.
+
2011-11-14 Arnold D. Robbins <arnold@skeeve.com>
* mbsupport.h: Add check for HAVE_BTOWC, per Pat Rankin.
diff --git a/debug.c b/debug.c
index 29ce8b1a..0a66b462 100644
--- a/debug.c
+++ b/debug.c
@@ -2231,6 +2231,23 @@ set_breakpoint_at(INSTRUCTION *rp, int lineno, int silent)
INSTRUCTION *ip, *prevp;
for (prevp = rp, ip = rp->nexti; ip; prevp = ip, ip = ip->nexti) {
+ if (ip->opcode == Op_K_case) {
+ INSTRUCTION *i1, *i2;
+
+ /* Special case: the code line numbers for a switch do not form
+ * a monotonically increasing sequence. Check if the line # is between
+ * the first and last statements of the case block before continuing
+ * the search.
+ */
+ for (i2 = ip->stmt_start, i1 = i2->nexti; i2 != ip->stmt_end;
+ i2 = i1, i1 = i1->nexti) {
+ if (i1->source_line >= lineno)
+ return add_breakpoint(i2, i1, rp->source_file, silent);
+ if (i1 == ip->stmt_end)
+ break;
+ }
+ }
+
if (ip->source_line >= lineno)
return add_breakpoint(prevp, ip, rp->source_file, silent);
if (ip == (rp + 1)->lasti)