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--- src/basemath/bibli1.c.orig	2020-10-15 02:36:36.000000000 -0600
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+++ src/basemath/bibli1.c	2020-10-19 15:10:33.130950212 -0600
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@@ -1902,7 +1902,7 @@ END:
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 GEN
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 fincke_pohst(GEN a, GEN B0, long stockmax, long PREC, FP_chk_fun *CHECK)
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 {
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-  pari_sp av = avma;
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+  VOLATILE pari_sp av = avma;
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   VOLATILE long i,j,l;
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   VOLATILE GEN r,rinv,rinvtrans,u,v,res,z,vnorm,rperm,perm,uperm, bound = B0;
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--- src/gp/gp.c.orig	2020-10-15 02:36:36.000000000 -0600
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+++ src/gp/gp.c	2020-10-19 15:10:33.131950211 -0600
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@@ -433,7 +433,8 @@ break_loop(int numerr)
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 {
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   filtre_t F;
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   Buffer *b;
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-  int sigint = numerr<0, go_on = sigint;
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+  int sigint = numerr<0;
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+  VOLATILE int go_on = sigint;
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   struct gp_context rec1, rec2;
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   const char *prompt, *msg;
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   long nenv, oldframe_level = frame_level;
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--- src/language/gplib.c.orig	2020-10-15 02:36:36.000000000 -0600
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+++ src/language/gplib.c	2020-10-19 15:10:33.132950211 -0600
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@@ -938,7 +938,7 @@ parse_key_val(char *src, char **ps, char
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 void
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 gp_initrc(pari_stack *p_A)
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 {
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-  FILE *file = gprc_get();
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+  FILE * VOLATILE file = gprc_get();
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   Buffer *b;
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   filtre_t F;
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   VOLATILE long c = 0;
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--- src/modules/stark.c.orig	2020-10-15 02:36:36.000000000 -0600
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+++ src/modules/stark.c	2020-10-19 16:19:30.113213038 -0600
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@@ -2548,10 +2548,11 @@ quadray_init(GEN *pD, GEN f, GEN *pbnf,
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 /* compute the polynomial over Q of the Hilbert class field of
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    Q(sqrt(D)) where D is a positive fundamental discriminant */
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 static GEN
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-quadhilbertreal(GEN D, long prec)
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+quadhilbertreal(GEN D, long baseprec)
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 {
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   pari_sp av = avma;
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   GEN bnf, pol, bnr, dtQ, data, M;
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+  VOLATILE long prec = baseprec;
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   long newprec;
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   pari_timer T;
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