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authorDavid Young <dyoung@hdfgroup.org>2019-11-22 20:23:07 (GMT)
committerDavid Young <dyoung@hdfgroup.org>2019-11-22 20:23:07 (GMT)
commitfa1dfbbd8dc1cc226e440d6a9462a4b02009f11b (patch)
tree5e2bafefe55307b5676a031014a9361bb0b8934f /config
parentdde718ad51fdedd5318335ba6f7917f046d5ea77 (diff)
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Only promote maybe-uninitialized warnings to errors on GCC 8. Even on
GCC 8, there may be false positives at low optimization levels? I need to check.
Diffstat (limited to 'config')
-rw-r--r--config/gnu-flags8
1 files changed, 7 insertions, 1 deletions
diff --git a/config/gnu-flags b/config/gnu-flags
index c71974b..d228c8b 100644
--- a/config/gnu-flags
+++ b/config/gnu-flags
@@ -199,7 +199,7 @@ if test "X-gcc" = "X-$cc_vendor"; then
# H5_ECFLAGS="$H5_ECFLAGS -Werror=discarded-qualifiers"
H5_ECFLAGS="$H5_ECFLAGS -Werror=implicit-function-declaration"
H5_ECFLAGS="$H5_ECFLAGS -Werror=incompatible-pointer-types"
- H5_ECFLAGS="$H5_ECFLAGS -Werror=maybe-uninitialized"
+ H5_ECFLAGS="$H5_ECFLAGS -Wmaybe-uninitialized"
H5_ECFLAGS="$H5_ECFLAGS -Werror=pointer-sign"
H5_ECFLAGS="$H5_ECFLAGS -Werror=pointer-to-int-cast"
H5_ECFLAGS="$H5_ECFLAGS -Werror=switch"
@@ -347,6 +347,12 @@ if test "X-gcc" = "X-$cc_vendor"; then
# gcc 8
if test $cc_vers_major -ge 8; then
+ # For GCC 8, promote maybe-initialized warnings to an error. GCC 8
+ # reports 0 maybe-uninitialized warnings where earlier versions
+ # make many false reports. GCC 8 seems to analyze calls to static
+ # in order to detect initializations that occur there. It's possible
+ # that GCC 8 only performs that analysis at -O3, though.
+ H5_ECFLAGS="$H5_ECFLAGS -Werror=maybe-uninitialized"
H5_ECFLAGS="$H5_ECFLAGS -Werror=cast-function-type"
DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wstringop-overflow=4 -Wsuggest-attribute=cold -Wsuggest-attribute=malloc"
NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=cold -Wno-suggest-attribute=malloc"