[Bug libfortran/82962] valgrind reports "Conditional jump or move depends on uninitialised value" in EXECUTE_COMMAND_LINE
janus at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Nov 13 12:13:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82962
--- Comment #1 from janus at gcc dot gnu.org ---
Possible patch:
Index: libgfortran/intrinsics/execute_command_line.c
===================================================================
--- libgfortran/intrinsics/execute_command_line.c (revision 254678)
+++ libgfortran/intrinsics/execute_command_line.c (working copy)
@@ -145,10 +145,11 @@ execute_command_line_i4 (const char *command, GFC_
gfc_charlen_type cmdmsg_len)
{
bool w = wait ? *wait : true;
- int estat, estat_initial, cstat;
+ const int estat_initial = -100;
+ int estat, cstat;
if (exitstat)
- estat_initial = estat = *exitstat;
+ estat = estat_initial;
execute_command_line (command, w, &estat, cmdstat ? &cstat : NULL,
cmdmsg, command_len, cmdmsg_len);
Question is: What's a suitable value for estat_initial?
The same changes need to apply to execute_command_line_i8 as well.
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